With their proven track record

CAT Cams’ lineup includes a wide range of camshaft grinds

the factory OEM block's spray-on iron layer falls short

- There are no returns available on any engine bearings

It is recommended to not use any additional sealant on the MLS gasket

BMW N55/S55 Valves by SuperTech Valve Locks:Add Valve Locks With their proven track recordThis Supertech High Performance Valve Kit is expertly designed for BMW N55 and S55 engines, providing an essential cylinder head upgrade for high performance applications. Engineered to withstand the rigors of demanding performance conditions, these valves enhance durability and reliability, ensuring optimal valvetrain efficiency and engine power output. Renowned among engine builders, Supertech is celebrated for its precision engineering and superior