Mr. Gasket Headlock Locking Header Bolts, M8-1.25 X 25mm, Set of 12 2235G

Name: Mr. Gasket Headlock Locking Header Bolts, M8-1.25 X 25mm, Set of 12 2235G
Brand: Mr. Gasket
SKU: 4011025
Price: 60.99 CAD
Availability: InStock

$60.99 ea

NEWARRIVING SOONEstimated Ship Date 08/20/2025 (If Ordered Today)100 Available from HOLLEY PERFORMANCE PRODUCTS as of 08/02/2025

Model: 4011025

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Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.

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Headlock™ Bolts eliminate the need for lock washers, Period. That's because each Headlock™ Bolt features 24 equally-spaced, stainless steel teeth serrations that bite into and hold onto the attaching surface-eliminating the need for lock-washers.

Features:

12 per Package
Includes Ball Head Socket Tool - to Start Header Bolt Into Head
410 stainless steel
Minimum 180,000 PSI tensile strength
24 equally spaced clockwise teeth

Videos:

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.

Make	Model	Submodel	Years	Engine	Fitment Notes
Chevrolet	C1500		1997	5.7L / 350 / V8 5.0L / 305 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	C1500		1998	5.7L / 350 / V8 5.0L / 305 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	C1500		1999	5.7L / 350 / V8 5.0L / 305 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	C2500		1997	5.7L / 350 / V8 5.0L / 305 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	C2500		1998	5.7L / 350 / V8 5.0L / 305 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	C2500		1999	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	C2500		2000	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	C3500		1997	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	C3500		1998	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	C3500		1999	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	C3500		2000	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Colorado		2009	5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Colorado		2010	5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Colorado		2011	5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Colorado		2012	5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Colorado		2013	3.6L / 217 / V6	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 1500		1997	5.7L / 350 / V8 5.0L / 305 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 1500		1998	5.7L / 350 / V8 5.0L / 305 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 1500		1999	5.7L / 350 / V8 5.0L / 305 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 1500		2000	5.7L / 350 / V8 5.0L / 305 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 1500		2001	5.7L / 350 / V8 5.0L / 305 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 1500		2002	5.7L / 350 / V8 5.0L / 305 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 1500		2003	5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 1500		2004	5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 1500		2005	5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 1500		2006	5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 1500		2007	5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 2500		1997	5.0L / 305 / V8 5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 2500		1998	5.0L / 305 / V8 5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 2500		1999	5.0L / 305 / V8 5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 2500		2000	5.0L / 305 / V8 5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 2500		2001	5.0L / 305 / V8 5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 2500		2002	5.0L / 305 / V8 5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 2500		2003	6.0L / 364 / V8 4.8L / 294 / V8 5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 2500		2004	6.0L / 364 / V8 4.8L / 294 / V8 5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 2500		2005	6.0L / 364 / V8 4.8L / 294 / V8 5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 2500		2006	6.0L / 364 / V8 4.8L / 294 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 2500		2007	6.0L / 364 / V8 4.8L / 294 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 2500		2008	6.0L / 364 / V8 4.8L / 294 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 2500		2009	6.0L / 364 / V8 4.8L / 294 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 2500		2010	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 2500		2011	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 2500		2012	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 2500		2013	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 2500		2014	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 3500		1997	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 3500		1998	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 3500		1999	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 3500		2000	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 3500		2001	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 3500		2002	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 3500		2003	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 3500		2004	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 3500		2005	6.0L / 364 / V8 4.8L / 294 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 3500		2006	6.0L / 364 / V8 4.8L / 294 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 3500		2007	6.0L / 364 / V8 4.8L / 294 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 3500		2008	6.0L / 364 / V8 4.8L / 294 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 3500		2009	6.0L / 364 / V8 4.8L / 294 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 3500		2010	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 3500		2011	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 3500		2012	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 3500		2013	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Express 3500		2014	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	K1500		1997	5.0L / 305 / V8 5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	K1500		1998	5.0L / 305 / V8 5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	K1500		1999	5.0L / 305 / V8 5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	K2500		1997	5.7L / 350 / V8 5.0L / 305 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	K2500		1998	5.7L / 350 / V8 5.0L / 305 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	K2500		1999	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	K2500		2000	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	K3500		1997	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	K3500		1998	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	K3500		1999	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	K3500		2000	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 1500 Classic		2007	6.0L / 364 / V8 5.3L / 325 / V8 4.8L / 294 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 1500 HD Classic		2007	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 1500 HD		2001	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 1500 HD		2002	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 1500 HD		2003	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 1500 HD		2005	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 1500 HD		2006	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 1500		1999	4.8L / 294 / V8 5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 1500		2000	4.8L / 294 / V8 5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 1500		2001	4.8L / 294 / V8 5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 1500		2002	4.8L / 294 / V8 5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 1500		2003	4.8L / 294 / V8 6.0L / 364 / V8 5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 1500		2004	4.8L / 294 / V8 6.0L / 364 / V8 5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 1500		2005	4.8L / 294 / V8 6.0L / 364 / V8 5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 1500		2006	4.8L / 294 / V8 6.0L / 364 / V8 5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 1500		2007	4.8L / 294 / V8 6.0L / 364 / V8 5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 1500		2008	4.8L / 294 / V8 6.0L / 364 / V8 5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 1500		2009	4.8L / 294 / V8 6.0L / 364 / V8 5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 1500		2010	6.0L / 364 / V8 5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 1500		2011	6.0L / 364 / V8 5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 1500		2012	6.0L / 364 / V8 5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 1500		2013	6.0L / 364 / V8 5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 2500 HD Classic		2007	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 2500 HD		2001	6.6L / 403 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 2500 HD		2002	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 2500 HD		2003	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 2500 HD		2004	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 2500 HD		2005	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 2500 HD		2006	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 2500 HD		2007	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 2500 HD		2008	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 2500 HD		2009	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 2500 HD		2010	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 2500 HD		2011	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 2500 HD		2012	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 2500 HD		2013	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 2500 HD		2014	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 2500		1999	6.0L / 364 / V8 5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 2500		2000	6.0L / 364 / V8 5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 2500		2001	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 2500		2002	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 2500		2003	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 2500		2004	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 3500 Classic		2007	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 3500 HD		2007	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 3500 HD		2008	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 3500 HD		2009	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 3500 HD		2010	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 3500 HD		2011	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 3500 HD		2012	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 3500 HD		2013	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 3500 HD		2014	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 3500		2001	6.6L / 403 / V8 6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 3500		2002	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 3500		2003	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 3500		2004	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 3500		2005	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Chevrolet	Silverado 3500		2006	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	C1500		1997	5.0L / 305 / V8 5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	C1500		1998	5.0L / 305 / V8 5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	C1500		1999	5.0L / 305 / V8 5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	C2500		1997	5.0L / 305 / V8 5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	C2500		1998	5.0L / 305 / V8 5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	C2500		1999	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	C2500		2000	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	C3500		1997	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	C3500		1998	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	C3500		1999	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	C3500		2000	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Canyon		2009	5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Canyon		2010	5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Canyon		2011	5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Canyon		2012	5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	K1500		1997	5.7L / 350 / V8 5.0L / 305 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	K1500		1998	5.7L / 350 / V8 5.0L / 305 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	K1500		1999	5.7L / 350 / V8 5.0L / 305 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	K2500		1997	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	K2500		1998	5.7L / 350 / V8 5.0L / 305 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	K2500		1999	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	K2500		2000	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	K3500		1997	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	K3500		1998	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	K3500		1999	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	K3500		2000	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 1500		1997	5.7L / 350 / V8 5.0L / 305 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 1500		1998	5.7L / 350 / V8 5.0L / 305 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 1500		1999	5.7L / 350 / V8 5.0L / 305 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 1500		2000	5.7L / 350 / V8 5.0L / 305 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 1500		2001	5.7L / 350 / V8 5.0L / 305 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 1500		2002	5.7L / 350 / V8 5.0L / 305 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 1500		2003	5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 1500		2004	5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 1500		2005	5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 1500		2006	5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 1500		2007	5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 2500		1997	5.0L / 305 / V8 5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 2500		1998	5.0L / 305 / V8 5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 2500		1999	5.0L / 305 / V8 5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 2500		2000	5.0L / 305 / V8 5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 2500		2001	5.0L / 305 / V8 5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 2500		2002	5.0L / 305 / V8 5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 2500		2003	4.8L / 294 / V8 5.3L / 325 / V8 6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 2500		2004	4.8L / 294 / V8 5.3L / 325 / V8 6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 2500		2005	4.8L / 294 / V8 5.3L / 325 / V8 6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 2500		2006	4.8L / 294 / V8 6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 2500		2007	4.8L / 294 / V8 6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 2500		2008	4.8L / 294 / V8 6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 2500		2009	4.8L / 294 / V8 6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 2500		2010	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 2500		2011	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 2500		2012	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 2500		2013	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 2500		2014	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 3500		1997	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 3500		1998	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 3500		1999	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 3500		2000	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 3500		2001	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 3500		2002	5.7L / 350 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 3500		2003	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 3500		2004	6.0L / 364 / V8 4.8L / 294 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 3500		2005	6.0L / 364 / V8 4.8L / 294 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 3500		2006	6.0L / 364 / V8 4.8L / 294 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 3500		2007	6.0L / 364 / V8 4.8L / 294 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 3500		2008	6.0L / 364 / V8 4.8L / 294 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 3500		2009	6.0L / 364 / V8 4.8L / 294 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 3500		2010	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 3500		2011	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 3500		2012	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 3500		2013	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Savana 3500		2014	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 1500 Classic		2007	5.3L / 325 / V8 4.8L / 294 / V8 6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 1500 HD Classic		2007	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 1500 HD		2001	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 1500 HD		2002	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 1500 HD		2003	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 1500 HD		2005	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 1500 HD		2006	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 1500	WT	2012	5.3L / 325 / V8
GMC	Sierra 1500		1999	4.8L / 294 / V8 5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 1500		2000	4.8L / 294 / V8 5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 1500		2001	4.8L / 294 / V8 5.3L / 325 / V8 6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 1500		2002	4.8L / 294 / V8 5.3L / 325 / V8 6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 1500		2003	4.8L / 294 / V8 5.3L / 325 / V8 6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 1500		2004	4.8L / 294 / V8 5.3L / 325 / V8 6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 1500		2005	4.8L / 294 / V8 5.3L / 325 / V8 6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 1500		2006	4.8L / 294 / V8 5.3L / 325 / V8 6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 1500		2007	4.8L / 294 / V8 6.2L / 376 / V8 5.3L / 325 / V8 6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 1500		2008	4.8L / 294 / V8 6.2L / 376 / V8 5.3L / 325 / V8 6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 1500		2009	4.8L / 294 / V8 5.3L / 325 / V8 6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 1500		2010	5.3L / 325 / V8 6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 1500		2011	5.3L / 325 / V8 6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 1500		2012	5.3L / 325 / V8 6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 1500		2013	5.3L / 325 / V8 6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 2500 HD Classic		2007	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 2500 HD		2001	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 2500 HD		2002	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 2500 HD		2003	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 2500 HD		2004	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 2500 HD		2005	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 2500 HD		2006	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 2500 HD		2007	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 2500 HD		2008	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 2500 HD		2009	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 2500 HD		2010	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 2500 HD		2011	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 2500 HD		2012	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 2500 HD		2013	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 2500 HD		2014	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 2500		1999	6.0L / 364 / V8 5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 2500		2000	6.0L / 364 / V8 5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 2500		2001	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 2500		2002	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 2500		2003	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 2500		2004	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 3500 Classic		2007	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 3500 HD		2007	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 3500 HD		2008	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 3500 HD		2009	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 3500 HD		2010	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 3500 HD		2011	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 3500 HD		2012	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 3500 HD		2013	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 3500 HD		2014	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 3500		2001	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 3500		2002	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 3500		2003	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 3500		2004	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 3500		2005	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
GMC	Sierra 3500		2006	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Hummer	H2		2005	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Hummer	H2		2006	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Hummer	H2		2007	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Hummer	H3T		2009	5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Hummer	H3T		2010	5.3L / 325 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Pontiac	G8		2008	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;
Pontiac	G8		2009	6.0L / 364 / V8	HEADLOCK LOCKING HEADER BOLTS; METRIC; 1997-UP CHEVY/GM/GMC ENGINES; 12 PC.;

Specifications:

Emission Code	5
Finish	Polished
Material	410 stainless steel
Part Type	Exhaust Header Bolt
Product Type	HeadLock Locking Header Bolts
Proposition 65	www.P65Warnings.ca.gov
Size	M8-1.25 x 25mm
Warranty	Limited 90 Day
Weight	5.0000

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Mr. Gasket Headlock Locking Header Bolts, M8-1.25 X 25mm, Set of 12 2235G:

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