This is the rear cover and PCV diaphragm kit to fix a valve cover that has a stuck or leaking PCV valve, that is consuming excessive oil.
Though BMW's B58 engine has proven to be mostly reliable, it does have one well-known problem, failure of the PCV Valve. This issue is especially common on cars with upgraded turbos. Signs that your BMW has experienced this failure include misfires, a rough idle, oil in the the intake/chargepipe, or white smoke coming from the exhaust.
The good news is that this is easily fixed and is very affordable! This kit contains all of the items necessary to repair your PCV valve and restore the smooth operation of your B58 engine.
BMW B58 Engine Series Only
Compatible with
M140i, M240i, 340i, 440i, 540i, 640i, 740i, M40i with B58 Engine Code
Replacement Tappet Cover PCV Breather Valve Kit.
What's in the box
1 x PCV Valve Cover
1 x Diaphragm
1 x Spring
