GMC S15 Headers

PAINTED HEDDER, EXHAUST HEADER -- 49-state legal; Not for sale or use in California; Cannot be shipped to California addresses; Tube Size 1.5 in., Collector Size 2.5 in., Without Smog Injection Or Injection Heads, Modification To Stock Exhaust Required To Retain Catalytic Converter, With Hydraulic Clutch Only

Fits the following 1988-1990 GMC S15 submodels:

• 1988-1990: Base; 6 Cyl 4.3L;
• 1988-1990: High Sierra; 6 Cyl 4.3L;

• 1988-1990: Sierra Classic; 6 Cyl 4.3L;

• 1988-1988: Gypsy; 6 Cyl 4.3L;

Fits 2 more submodels. (Show all) Show less info

FLOWTECH I STANDARD FULL-LENGTH HEADERS, STEEL, BLACK, SET OF 2 -- For off road use - Not legal for use on public roads and highways; 1.5 in. tube diameter, 16-gauge tube wall thickness, 2.5 in. weld-on collector, standard head flange; All mounting hardware such as bolts, nuts, and premium gasket are included; 4-1 design; Round head port; These headers are precision-engineered and leak-tested to provide the maximum performance and fuel efficiency of your engine; Formed from specially selected 0.049 cold roll flash controlled tubing with high quality electrostatically-applied satin black paint finish; They feature Flowtech's exclusive, thick, and mandrel-formed power plenum collector; All ports are precisely fitted and finished with sturdy and leaf-proof o-ringed port seals; Must modify stock exhaust to retain catalytic converter; Application with oxygen sensor use reducer part number 10105; Heap pipe lubrication required; Will not fit angle plug heads; Requires Flowtech front frame mount for installation.

Fits the following 1982-1990 GMC S15 submodels:

• 1983-1990: Base; All Engines;
• 1983-1990: High Sierra; All Engines;

• 1983-1990: Sierra Classic; All Engines;

• 1986-1988: Gypsy; All Engines;

• 1987-1987: EL; All Engines;

• 1985-1985: Base; 4 Cyl 2.5L;

• 1985-1985: High Sierra; 4 Cyl 2.5L;

• 1985-1985: Sierra Classic; 4 Cyl 2.5L;

• 1984-1985: Base; 4 Cyl 1.9L;

• 1984-1985: Base; 6 Cyl 2.8L;

• 1984-1985: High Sierra; 4 Cyl 1.9L;

• 1984-1985: High Sierra; 6 Cyl 2.8L;

• 1984-1985: Sierra Classic; 4 Cyl 1.9L;

• 1984-1985: Sierra Classic; 6 Cyl 2.8L;

• 1984-1984: Base; 4 Cyl 2.0L;

• 1984-1984: High Sierra; 4 Cyl 2.0L;

• 1984-1984: Sierra Classic; 4 Cyl 2.0L;

• 1982-1982: All Submodels; All Engines;

Fits 16 more submodels. (Show all) Show less info

HEDMAN STANDARD DUTY FULL-LENGTH HEADERS, STEEL, BLACK, SET OF 2 -- 49-state legal; Not for sale or use in California; Cannot be shipped to California addresses; 1.5 in. tube diameter, 18-gauge tube wall thickness, 2.5 in. flange collector, 0.25 in. standard head flange; Premium gasket and installation hardware included; 3-1 design; Round head port; They feature 18-gauge mandrel-bent primary tubes; Protected by factory applied black paint for pre-installation protection; Made in the USA; Requires Elite replacement gasket part number 27670.

Fits the following 1988-1990 GMC S15 submodels:

• 1988-1990: Base; 6 Cyl 4.3L;
• 1988-1990: High Sierra; 6 Cyl 4.3L;

• 1988-1990: Sierra Classic; 6 Cyl 4.3L;

• 1988-1988: Gypsy; 6 Cyl 4.3L;

Fits 2 more submodels. (Show all) Show less info