Rear Main Seal/Intermediate Support Cover O-ring may Leak Oil on Porsche 911
Problem overview
Engine oil leaks can occur at the rear main seal and/or intermediate support cover o-ring; a revised seal is available. A careful diagnosis with proper tools is necessary to verify dimensional accuracy of the crankshaft to engine block.
17 people reported this problem
4 commentsPorsche 911 vehicles with this problem
12 model years affected
Average mileage: 22,450 miles
(20,600 - 24,300)
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