1998-2001 Oldsmobile Intrigue 3.5L/3.8L Exhaust Manifold 4 Cyl W/ Heat Shield 674-509 Hyundai Seals & Gaskets For 2007-2013 Chevrolet Avalanche 5

For 2007-2013 Chevrolet Avalanche 5

Finished with a high-temperature ceramic coating for enhanced durability

Headers provide each cylinder with its own mini exhaust pipe

6L Duramax Diesel Engines

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1998-2001 Oldsmobile Intrigue 3.5L/3.8L Exhaust Manifold 4 Cyl W/ Heat Shield 674-509 Hyundai Seals & Gaskets For 2007-2013 Chevrolet Avalanche 5Product Overview: 1. Exhaust headers are a key upgrade for boosting engine performance by improving airflow. Unlike restrictive factory exhaust manifolds, performance headers give each cylinder its own dedicated exhaust path, reducing back pressure and improving exhaust flow. 2. By minimizing exhaust interference between cylinders, headers help increase horsepower and torque. When paired with a high performance cold air intake and a cat back exhaust