Incredible Jeep 4.0 Aluminum Head Ideas. Web rebuilding a 4.0l jeep straight six to 242hp. You are looking at a jeep 4.0 conversion cylinder head casting # 7120 or # 0630.this is a performance.
Also, the aluminum head on a 4.0 os so long that you will be. Web the 4.0 jeep idle air control will work with the electromotive unit and the jeep 4.0 throttle position sensor will work too. Web make sure that your jeep's engine has everything it needs for efficient operation with the right jeep 4.0 performance cylinder head.
