this manifold delivers the engineering excellence and performance that RK Autowerks is trusted for

Ferrea’s high-performance BMW N54 valve springs ensure your engine handles increased lift and RPMs without issue

2000-2002     Z3     3

a bore size of 85mm gives a displacement of 3303cc

1977-1981     E12     520 / 526

5150 AutoSport High Performance Rod Bearing Set, BMW S58 740ix this manifold delivers the engineering5150 High Performance Rod Bearing Sets for BMW S58 engines are engineered for both stock street cars and ultra high horsepower builds. Coated by Calico to reduce friction, these bearings improve engine efficiency and power output while offering superior protection against bearing "spinning" under stress. With thermal resistant properties, they perform reliably in extreme conditions such as forced induction or racing, and help prevent engine failure