This exhaust manifold for the 1991-1996 BMW E30 4 Cylinder Engine were designed to combine the exhaust gasses from each of the cylinders quickly with a manifold that was cost effective to produce.
Our 4-1 off-road racing headers are designed to allow the exhaust gasses to flow more freely from each cylinder and combine in a more efficient manner.
Tubing has been optimized for the 1.8L and 1.9L engines.
This creates a reduction in cylinder backpressure and improved exhaust gas velocity.
These improvements free up lost horsepower and torque. An added benefit is a more performance oriented exhaust sound.
100% brand new, Never been tried or installed
Features One O2 Sensor location and comes with blanking plugs for models that dont require them.
Header features 4-1 light weight piping design.
Inet: 1.75" x 1.25"
Diameter: 1.50" into 2"
Fits both the 1.8L and 1.9L DOHC Engines
CNC machine flanges with TIG and MIG welded construction
HP gains of 5-10HP dending on current setup.
Direct bolt on installation.
No instructions included, Professional installation is highly recommended
1X Exhaust Header with gasket
Gasket(s) and Bolt(s) as shown in the Picture Show
1989-1996 BMW E30/E36 3-SERIES M42-B18 318
For Year and Model, Please Check Compatibility