2001-2005 Pontiac Aztek 3.4L Exhaust Manifold 4 Cyl W/ Heat Shield 674-509 2024-3-10 For 2007 GMC Sierra 1500

For 2007 GMC Sierra 1500 CLASSIC 5

For Honda Accord EX

Inner Bore Size: 39mm

12101-087-010

5-2009 Chevy Silverado 3500 6

2001-2005 Pontiac Aztek 3.4L Exhaust Manifold 4 Cyl W/ Heat Shield 674-509 2024-3-10 For 2007 GMC Sierra 1500Product 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