FlowTech Y-Pipe 11504YFLT

Name: FlowTech Y-Pipe 11504YFLT
Brand: FlowTech
SKU: 4005903
Price: 450.99 CAD
Availability: InStock

$450.99 ea

NEWARRIVING SOONEstimated Ship Date 04/15/2026 (If Ordered Today)53 Available from HOLLEY PERFORMANCE PRODUCTS as of 04/01/2026

Model: 4005903

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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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Description Vehicle Fitment Specifications Reviews (0) Product Q&A Related Products

Flowtechs Y-Pipes Are Ideal For Connecting Standard Flowtech Headers To Your Stock Catalytic Converter Equipped Exhaust System.

Features:

Ideal For Connecting Standard Flowtech Headers To Your Stock Catalytic Converter Equipped Exhaust System.
Aluminized

Use With Flowtech Header P/N 11504FLT 1994-1995 models require modification to the stock exhaust

Installation Notes:

Use With Flowtech Header P/N 11504FLT 1994-1995 models require modification to the stock exhaust

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	Years	Engine	Fitment Notes
Chevrolet	C1500	1988	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	C1500	1989	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	C1500	1990	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	C1500	1991	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	C1500	1992	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	C1500	1993	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	C1500	1994	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	C1500	1995	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	C2500	1988	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	C2500	1989	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	C2500	1990	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	C2500	1991	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	C2500	1992	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	C2500	1993	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	C2500	1994	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	C2500	1995	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	C3500	1988	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	C3500	1989	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	C3500	1990	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	C3500	1991	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	C3500	1992	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	C3500	1993	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	C3500	1994	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	C3500	1995	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	K1500	1988	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	K1500	1989	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	K1500	1990	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	K1500	1991	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	K1500	1992	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	K1500	1993	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	K1500	1994	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	K1500	1995	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	K2500	1988	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	K2500	1989	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	K2500	1990	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	K2500	1991	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	K2500	1992	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	K2500	1993	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	K2500	1994	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	K2500	1995	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	K3500	1988	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	K3500	1989	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	K3500	1990	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	K3500	1991	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	K3500	1992	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	K3500	1993	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	K3500	1994	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	K3500	1995	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
Chevrolet	R2500	1989	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	C1500	1989	5.7L / 350 / V8 5.0L / 305 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	C1500	1990	5.7L / 350 / V8 5.0L / 305 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	C1500	1991	5.7L / 350 / V8 5.0L / 305 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	C1500	1992	5.7L / 350 / V8 5.0L / 305 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	C1500	1993	5.7L / 350 / V8 5.0L / 305 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	C1500	1994	5.7L / 350 / V8 5.0L / 305 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	C1500	1995	5.7L / 350 / V8 5.0L / 305 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	C2500	1988	5.7L / 350 / V8 5.0L / 305 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	C2500	1989	5.7L / 350 / V8 5.0L / 305 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	C2500	1990	5.7L / 350 / V8 5.0L / 305 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	C2500	1991	5.7L / 350 / V8 5.0L / 305 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	C2500	1992	5.7L / 350 / V8 5.0L / 305 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	C2500	1993	5.7L / 350 / V8 5.0L / 305 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	C2500	1994	5.7L / 350 / V8 5.0L / 305 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	C2500	1995	5.7L / 350 / V8 5.0L / 305 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	C3500	1988	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	C3500	1989	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	C3500	1990	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	C3500	1991	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	C3500	1992	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	C3500	1993	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	C3500	1994	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	C3500	1995	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	K1500	1988	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	K1500	1989	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	K1500	1990	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	K1500	1991	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	K1500	1992	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	K1500	1993	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	K1500	1994	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	K1500	1995	5.0L / 305 / V8 5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	K2500	1988	5.7L / 350 / V8 5.0L / 305 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	K2500	1989	5.7L / 350 / V8 5.0L / 305 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	K2500	1990	5.7L / 350 / V8 5.0L / 305 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	K2500	1991	5.7L / 350 / V8 5.0L / 305 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	K2500	1992	5.7L / 350 / V8 5.0L / 305 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	K2500	1993	5.7L / 350 / V8 5.0L / 305 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	K2500	1994	5.7L / 350 / V8 5.0L / 305 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	K2500	1995	5.7L / 350 / V8 5.0L / 305 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	K3500	1988	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	K3500	1989	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	K3500	1990	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	K3500	1991	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	K3500	1992	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	K3500	1993	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	K3500	1994	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;
GMC	K3500	1995	5.7L / 350 / V8	Y-Pipes; Header to Converter; For Use w/PN[11504FLT]; Not Legal For Street Use;

Specifications:

Collector Diameter	3.00 inch
Emission Code	4
Header Finish	Natural
Header Style	Y-Pipe
Material	Aluminized Steel
Part Type	Exhaust Y Pipe
Primary Tube Dia.	2-1/2 inch
Product Type	Exhaust Pipe
Proposition 65	www.P65Warnings.ca.gov
Tube Diameter	2-1/2 Inch
Tube Material	Aluminized Steel

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FlowTech Y-Pipe 11504YFLT

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