If you have a 2002 BMW 325xi (M54) and it’s leaking oil, this is a very common issue with this era of engines, also know as the E46 development body style. It’s more common among the plastic valve covers, but the aluminum covers have been known also to crack with time.
To repair this symptom correctly, you must do one of two things: replace the valve cover, or the valve cover gasket.
It’s not uncommon for these plastic valve covers to crack after 10+ years of usage.
As far as availability there isn’t much choice besides going with the dealership or a trusted BMW parts store.
When you do this repair on the 2002 BMW 325xi 2.5L M54, it’s also recommended to replace the valve cover gasket, spark plug seals, nut seals, grommets, and copper sealing washers.
Recommended: E46 Valve Cover Gasket
Flat Head Screwdriver
3/8 Extensions (6″+)
TORX 30 Socket
Optional: Drei Bond Sealing Compound 1209
Estimated repair cost
Estimated repair time
1 hour 30 minutes