Rear Main Crankshaft Seal Service Kit | Audi B5 S4

The rear seal for the crankshaft is one of the most difficult to replace. When they fail, your engine will be marking its territory with oil puddles/drops anywhere you park. Apart from making a mess, it can also cause oil to come in contact with the clutch disc, which can deteriorate the material, and if the oil level isn't periodically checked major leaks can cause extensive internal engine or turbocharger damage. This set includes the rear crankshaft flange with the included seal and the gasket to seal the flange to the engine block.