2002-2005 BMW E85 Z4 2.5L/2.8L/3.0L Engines Exhaust Header Manifold 20231212 More or less depending on

More or less depending on the severity of the restriction

For 2001-2016 GM 6

adding extra horsepower and torque

2006 Acura RSX

Fit for 2007 Honda TRX250EX Sportrax

2002-2005 BMW E85 Z4 2.5L/2.8L/3.0L Engines Exhaust Header Manifold 20231212 More or less depending onProduct Overview: 1. Getting more air into your engine and more exhaust out is the key to a performance motor. That's where exhaust headers is significant as the first revenue of an exhaust system. Exhaust performance headers manipulate the air flow with the performance robbing exhaust manifold that came with your car. 2. Headers provide each cylinder with its own mini exhaust pipe, which means exhaust headers prevent interference among cylinders;