Doug Thorley Headers

THY-304Y-C

Doug Thorley Headers THY-304Y-C Exhaust Header for GM 454 Truck 4-Wheel Drive

EAN: 0812721020294

UPC: 812721020294

Headers

Made in the USA with limited lifetime warranty
Extra thick 14GA tubing and 3/8 inch thick flanges
Ceramic coated inside and out
Kit includes all required gaskets and/or installation hardware
CARB approved, 50 state smog legal

Doug Thorley Headers THY-304Y-C long tube tri-y headers deliver the ultimate in performance and gas mileage for your 1973-1991 GM Pickup Truck , Suburban, Blazer/Jimmy, 4WD ONLY. Doug Thorley Headers is the originator of the tri-y header design, which is the most efficient way to increase horsepower and torque over a broad RPM range, and more importantly the range where you use it most. The headers are manufactured using heavy duty 14GA steel tubing, and super flat 3/8 inch head flanges. They are then silver ceramic coated inside and out, which looks great, drastically reduces under-hood temperatures, and creates a strong barrier to protect the headers from the environment. APPLICATION SPECIFICS: 1973-1991 GM Pickup Truck , Suburban, full-size Blazer, full-size Jimmy, 366-454 V8, 4WD ONLY, will not fit D-port cylinder heads, no air injection fittings. No y-pipes included, may require professional installation.

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