S54 Tensioner Chain Guide S54Core Upgraded pistons seals and Viton

Upgraded pistons seals and Viton O-rings

and typically return them to you in 1-2 business days

preventing possible damage to the clutch

as these had weaker tensioners that would cause excessive chain noise

You can find our S54 Vanos installation guide here

S54 Tensioner Chain Guide S54Core Upgraded pistons seals and VitonWe highly recommend changing the tensioner chain guide rail when removing the vanos, the stock chain guide becomes brittle over time and if left unchecked it can eventually break, causing chain noise (sometimes confused with vanos rattle) at low RPM. It's also very easy to replace once the vanos is out of the way. We sell the stock BMW replacement guide as well as an upgraded version that is CNC machined from solid stock and will last the life of the