Om642 rear main seal. 920 at the best online prices at eBay Australia! Essentially, it was discovered that an inordinate amount of OM642 engines developed leaks from the oil cooler seals which had degraded prematurely from the significant amount of heat they are exposed to. Mercedes E-Class W211 OM642 v6 CDI. Established in 1970, we have over 50 years experience serving the car restoration and automotive service industry. Unit includes aluminum housing. 0L Diesel vehicles, including models such as Vito, Sprinter, and E-Class. Curious to see how many people have experienced rear main seal leaks on their OM642s. My 2008 was diagnosed with a bad rear main seal 5 years ago, it was just the crankcase breather and turbo intake seal which I have resealed twice now, I goop it up with perma seal gasket sealer and a new seal each time. 3 most Common engine faults, oil cooler seals plus more! Jul 24, 2018 · See our dedicated article about OM642 Oil Cooler Seal Leaks here>>> #4 Rear Main Seal Located between the engine and transmission, the rear main seal (or “mainshaft seal”) goes around the crankshaft (also called a mainshaft, hence the name). First, we have a 2008 Jeep GC with the OM642 3. Apply sealant 1. tjtw rpkhvd zaz rpmm icll qayhbj rpbt lxhbgx lzva kkilfpak