1997-1999 Oldsmobile Aurora 4.0L Exhaust Manifold 4 Cyl W/ Heat Shield 674-509 yy2210B Package Content:

Package Content:

Engine Type: CF1V91R / CF191R

For Dodge Ram 2500 3500 6

2 * 1 / 4 "- 20x 1

For Chevrolet Silverado 2500 HD 2001-2013

1997-1999 Oldsmobile Aurora 4.0L Exhaust Manifold 4 Cyl W/ Heat Shield 674-509 yy2210B Package Content:Product 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