Fel-Pro Cylinder Head Gasket - GM LS-Series H77803FXXXL Taking the core features from

Taking the core features from AutoMeter's Pro Wideband

2 dual exit pipes to connect to stock or aftermarket GT axle-back exhaust system

The most common question is:

sleeve nut & O-ringDerale has been the leader in performance cooling for decades

Air gap cooler and denser mixture for more power

Fel-Pro Cylinder Head Gasket - GM LS-Series H77803FXXXL Taking the core features fromProduct Description: Cylinder Head Gasket GM LS Series Fel Pro is the leading brand of replacement and performance automotive gaskets and sealing products. Fel Pro is recognized as the industry leader for premium replacement gaskets and seals for cars, SUVs, and light and medium duty trucks. They manufacture high quality solutions for everything from specific system repairs to complete engine overhauls. Fel Pro also offers specialty sealing products