2001-2005 Pontiac Aztek 3.4L Exhaust Manifold 4 Cyl W/ Heat Shield 674-509 Nissan Car Exhaust Manifolds & Headers 1 * spacer

1 * spacer

Features an 11:1 standard compression ratio

For Volkswagen For Passat B5        2004 TDI - BHW FWD

2008-2010 Audi A8 Quattro

Fit for 2006 Honda Recon 250 2x4 ES (TRX250TE)

2001-2005 Pontiac Aztek 3.4L Exhaust Manifold 4 Cyl W/ Heat Shield 674-509 Nissan Car Exhaust Manifolds & Headers 1 * spacerProduct 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