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Ships within 48 hours · Estimated delivery Aug 6 - Aug 11
Includes 5/8” 6Ft 100% silicone reinforced hose made for oil systems
Engine Type: CF1V91R / CF191R
Includes a ductile cast iron Y-pipe for superior strength under high-temperature conditions
Package Content:
7:1 standard compression ratio
1997-1999 Oldsmobile Aurora 4.0L Exhaust Manifold 4 Cyl W/ Heat Shield 674-509 yy2210B Includes 5/8” 6Ft 100% siliconeProduct 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
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