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FlowTech Shorty Headers, Black Painted 91837FLT

FlowTech Shorty Headers, Black Painted 91837FLT
$755.99 ea
NEWARRIVING SOONEstimated Ship Date 05/20/2025 (If Ordered Today)25 Available from HOLLEY PERFORMANCE PRODUCTS as of 04/30/2025
Model: 4006288
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
OVERSIZE 1
STORE PICKUP
[More Info]
FLOWTECH's emissions-friendly headers are just the ticket for those who want the best of both worlds - top performance and a clean machine. All Shorty Smog Headers bolt on quickly and easily to the factory exhaust system, retaining all stock emissions equipment, and offering maximum horsepower gains plus increased efficiency! This is a 50-State Legal header C.A.R.B. EO #D-115-16.
Features:
  • This is a 50-State Legal header C.A.R.B. EO #D-115-16.
  • Sturdy 16 gauge tubing
  • Extra thick 3/8” flanges for a leak-free seal
  • Designed as a direct fit replacement for factory exhaust manifolds
  • Will accommodate all emission control devices
  • Bolts directly to factory head pipe
  • Complete with premium gaskets and hardware
Breaking in an engine with ceramic coated headers WILL result in damage to the coating and will VOID all warranties. Ceramic coated headers require several heat cycles to fully cure before they will withstand extreme heat. Flowtech recommends using cast iron exhaust manifolds or old headers to break in new engines to avoid coating damage. Please call Flowtech tech service at 270-781-9741 for additional information regarding ceramic coated exhaust products. The use of header wraps can cause the header tubes to crack or rust due to excessive heat and moisture build-up. Flowtech does not recommend the use of header wraps as this will void the warranty.
Installation Notes:
Breaking in an engine with ceramic coated headers WILL result in damage to the coating and will VOID all warranties. Ceramic coated headers require several heat cycles to fully cure before they will withstand extreme heat. Flowtech recommends using cast iron exhaust manifolds or old headers to break in new engines to avoid coating damage. Please call Flowtech tech service at 270-781-9741 for additional information regarding ceramic coated exhaust products. The use of header wraps can cause the header tubes to crack or rust due to excessive heat and moisture build-up. Flowtech does not recommend the use of header wraps as this will void the warranty.

Downloads:

Download Name File Size
91837-3901flt.pdf144.37KB

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 Suburban Base 1998 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet C1500 Suburban Base 1999 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet C1500 Suburban LS 1998 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet C1500 Suburban LS 1999 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet C1500 Suburban LT 1999 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet C1500 Cheyenne 1998 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet C1500 LS 1999 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet C1500 Silverado 1998 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet C1500 WT 1998 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet C1500 1998 5.7L / 350 / V8 Shorty; Smog Headers; Standard; w/A.I.R.; 50 States Emissions Legal;
Chevrolet C1500 1999 5.7L / 350 / V8 Shorty; Smog Headers; Standard; w/A.I.R.; 50 States Emissions Legal;
Chevrolet C2500 Suburban Base 1998 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet C2500 Suburban Base 1999 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet C2500 Suburban LS 1998 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet C2500 Suburban LS 1999 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet C2500 Base 1999 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet C2500 Cheyenne 1998 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet C2500 LS 1999 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet C2500 Silverado 1998 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet C2500 WT 1998 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet C2500 1998 5.7L / 350 / V8 Shorty; Smog Headers; Standard; w/A.I.R.; 50 States Emissions Legal;
Chevrolet C2500 1999 5.7L / 350 / V8 Shorty; Smog Headers; Standard; w/A.I.R.; 50 States Emissions Legal;
Chevrolet C3500 1998 5.7L / 350 / V8 Shorty; Smog Headers; Standard; w/A.I.R.; 50 States Emissions Legal;
Chevrolet C3500 1999 5.7L / 350 / V8 Shorty; Smog Headers; Standard; w/A.I.R.; 50 States Emissions Legal;
Chevrolet K1500 Suburban Base 1998 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet K1500 Suburban Base 1999 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet K1500 Suburban LS 1998 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet K1500 Suburban LS 1999 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet K1500 Suburban LT 1999 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet K1500 Cheyenne 1998 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet K1500 LS 1999 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet K1500 Silverado 1998 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet K1500 WT 1998 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet K1500 1998 5.7L / 350 / V8 Shorty; Smog Headers; Standard; w/A.I.R.; 50 States Emissions Legal;
Chevrolet K1500 1999 5.7L / 350 / V8 Shorty; Smog Headers; Standard; w/A.I.R.; 50 States Emissions Legal;
Chevrolet K2500 Suburban Base 1998 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet K2500 Suburban Base 1999 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet K2500 Suburban LS 1998 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet K2500 Suburban LS 1999 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet K2500 Cheyenne 1998 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet K2500 Silverado 1998 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet K2500 WT 1998 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
Chevrolet K2500 1998 5.7L / 350 / V8 Shorty; Smog Headers; Standard; w/A.I.R.; 50 States Emissions Legal;
Chevrolet K2500 1999 5.7L / 350 / V8 Shorty; Smog Headers; Standard; w/A.I.R.; 50 States Emissions Legal;
Chevrolet K3500 1998 5.7L / 350 / V8 Shorty; Smog Headers; Standard; w/A.I.R.; 50 States Emissions Legal;
Chevrolet K3500 1999 5.7L / 350 / V8 Shorty; Smog Headers; Standard; w/A.I.R.; 50 States Emissions Legal;
Chevrolet Tahoe 1998 5.7L / 350 / V8 Shorty; Smog Headers; Standard; w/A.I.R.; 50 States Emissions Legal;
Chevrolet Tahoe 1999 5.7L / 350 / V8 Shorty; Smog Headers; Standard; w/A.I.R.; 50 States Emissions Legal;
Chevrolet Tahoe 2000 5.7L / 350 / V8 Shorty; Smog Headers; Standard; w/A.I.R.; 50 States Emissions Legal;
GMC C1500 Suburban Base 1998 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC C1500 Suburban Base 1999 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC C1500 Suburban SLE 1998 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC C1500 Suburban SLE 1999 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC C1500 Suburban SLT 1998 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC C1500 Suburban SLT 1999 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC C1500 Sierra SLE 1998 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC C1500 Sierra SLE 1999 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC C1500 Sierra SLT 1998 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC C1500 Sierra SLT 1999 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC C1500 Sierra SL 1998 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC C1500 Sierra SL 1999 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC C1500 Sierra Special 1998 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC C1500 1998 5.7L / 350 / V8 Shorty; Smog Headers; Standard; w/A.I.R.; 50 States Emissions Legal;
GMC C1500 1999 5.7L / 350 / V8 Shorty; Smog Headers; Standard; w/A.I.R.; 50 States Emissions Legal;
GMC C2500 Suburban Base 1998 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC C2500 Suburban Base 1999 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC C2500 Suburban SLE 1998 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC C2500 Suburban SLE 1999 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC C2500 Suburban SLT 1998 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC C2500 Suburban SLT 1999 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC C2500 Sierra SLE 1998 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC C2500 Sierra SLE 1999 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC C2500 Sierra SLT 1998 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC C2500 Sierra SLT 1999 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC C2500 Sierra SL 1998 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC C2500 Sierra SL 1999 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC C2500 1998 5.7L / 350 / V8 Shorty; Smog Headers; Standard; w/A.I.R.; 50 States Emissions Legal;
GMC C2500 1999 5.7L / 350 / V8 Shorty; Smog Headers; Standard; w/A.I.R.; 50 States Emissions Legal;
GMC C3500 1998 5.7L / 350 / V8 Shorty; Smog Headers; Standard; w/A.I.R.; 50 States Emissions Legal;
GMC C3500 1999 5.7L / 350 / V8 Shorty; Smog Headers; Standard; w/A.I.R.; 50 States Emissions Legal;
GMC K1500 Suburban Base 1998 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC K1500 Suburban Base 1999 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC K1500 Suburban SLE 1998 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC K1500 Suburban SLE 1999 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC K1500 Suburban SLT 1998 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC K1500 Suburban SLT 1999 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC K1500 Sierra SLE 1998 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC K1500 Sierra SLE 1999 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC K1500 Sierra SLT 1998 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC K1500 Sierra SLT 1999 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC K1500 Sierra SL 1998 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC K1500 Sierra SL 1999 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC K1500 Sierra Special 1998 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC K1500 1998 5.7L / 350 / V8 Shorty; Smog Headers; Standard; w/A.I.R.; 50 States Emissions Legal;
GMC K1500 1999 5.7L / 350 / V8 Shorty; Smog Headers; Standard; w/A.I.R.; 50 States Emissions Legal;
GMC K2500 Suburban Base 1998 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC K2500 Suburban Base 1999 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC K2500 Suburban SLE 1998 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC K2500 Suburban SLE 1999 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC K2500 Suburban SLT 1998 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC K2500 Suburban SLT 1999 5.7L / 350 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC K2500 Sierra SLE 1998 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC K2500 Sierra SLT 1998 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC K2500 Sierra SL 1998 5.0L / 305 / V8 FITS MODELS WITH AIR; 50 STATE EMISSIONS LEGAL
GMC K2500 1998 5.7L / 350 / V8 Shorty; Smog Headers; Standard; w/A.I.R.; 50 States Emissions Legal;
GMC K2500 1999 5.7L / 350 / V8 Shorty; Smog Headers; Standard; w/A.I.R.; 50 States Emissions Legal;
GMC K2500 2000 5.7L / 350 / V8 Shorty; Smog Headers; Standard; w/A.I.R.; 50 States Emissions Legal;
GMC K3500 1998 5.7L / 350 / V8 Shorty; Smog Headers; Standard; w/A.I.R.; 50 States Emissions Legal;
GMC K3500 1999 5.7L / 350 / V8 Shorty; Smog Headers; Standard; w/A.I.R.; 50 States Emissions Legal;
GMC Yukon 1998 5.7L / 350 / V8 Shorty; Smog Headers; Standard; w/A.I.R.; 50 States Emissions Legal;
GMC Yukon 1999 5.7L / 350 / V8 Shorty; Smog Headers; Standard; w/A.I.R.; 50 States Emissions Legal;
GMC Yukon 2000 5.7L / 350 / V8 Shorty; Smog Headers; Standard; w/A.I.R.; 50 States Emissions Legal;

Specifications:

Bolt Size 3/8-16 x 3/4, 3/8-16 x 3/4
C.A.R.B. EO # D-115-16
CARB (California) Compliant Yes
CARB EO# D-115-16
Collector Diameter 2.50 inch
Emission Code 1
Engine Chevrolet Small Block Gen I
Header Finish Black Paint
Header Style Shorty
Part Type Exhaust Header
Primary Tube Dia. 1-5/8 inch
Product Type Headers
Proposition 65 www.P65Warnings.ca.gov
Tube Material Mild Steel

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