Home » Gibson Performance Gibson Stainless Headers for 88-91 Chevy C-1500 Pickup with 4.3L & Air Tubes

Gibson stainless headers for 88-91 Chevy C-1500 Pickup with 4.3L & Air Tubes

Catalog #: 77595.300
Gibson Part #: GP121S

Designed as a direct fit for bolt-on replacement of the factory manifolds, attaches to OE crossover or down-pipe. These headers feature 3/8" thick laser cut flanges that prevent warping or leaking. All sets include gaskets, hardware, and Air-injection & O2 fittings where required. Available in Chromed 14gauge Steel, 409L 16 gauge Stainless Steel or Stainless with polished Hi-Temp Ceramic Coating. For GM, Dodge & Ford Trucks & SUVS.


Unleash Your Vehicle’s Full Power Potential!
Every Gibson Header is Dyno-tuned and engineered to deliver more usable horsepower and torque at low and mid-range RPM highway speeds. Improves engine’s ability to breathe and cooler operating engine temperature. Designed as a direct replacement for the factory manifolds, using the stock crossover pipe. They are well suited for lowered and raised vehicles, street and off-road. 50 State Street legal. Meets EPA and CARB requirements. Will not affect the factory warranty.

Installation Notes
Installation Difficulty:
Level 3Advanced
Installation Time: 2-4 hours
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