2001-2006 BMW E46 E39 Z4 Engine 2.5L, 2.8L and 3.0L L6 Exhaust Header Manifold BMW Other Performance Collector Diameter: 2-1/2" (64mm)

Collector Diameter: 2-1/2" (64mm)

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2001-2006 BMW E46 E39 Z4 Engine 2.5L, 2.8L and 3.0L L6 Exhaust Header Manifold BMW Other Performance Collector Diameter: 2-1/2" (64mm)Feature: 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; thus, the