BMW Coupes and Sedans 1970-1988 Repair Guide

Rear Main Seal



See Figure 1

The rear main bearing oil seal can be replaced after the transmission, and clutch/flywheel or the converter/flywheel has been removed from the engine.

Removal and installation, after the seal is exposed, is as follows.

  1. Drain the engine oil and loosen the oil pan bolts. Carefully use a knife to separate the oil pan gasket from the lower surface of the end cover housing.

The EPA warns that prolonged contact with used engine oil may cause a number of skin disorders, including cancer. You should make every effort to minimize your exposure to used engine oil. Protective gloves should be worn when changing the oil. Wash your hands and any other exposed skin areas as soon as possible after exposure to used engine oil. Soap and water, or waterless hand cleaner should be used.

Click image to see an enlarged view