Car Problem Reports

Porsche 911 Rear Main Seal/Intermediate Support Cover O-ring may Leak Oil

Porsche 911 Problem
16 Reports
Me Too

Model Years Affected: 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010

Average Mileage: 22,450 mi (20,600 mi - 24,300 mi)


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.

  • Visitor,

    Car has been in climate controlled garage with 500 miles. A recent porsche inspection as for a battery change and reset notice the real seal leak. Was there a recall for this and was this a known problem. Gee why would this happen and do I need to pull the engine and turbo out or wait and see approach? Porsche says do it on my dime with 22 hrs labor LOL.

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  •  Rookie

    The car has only 20,600 miles and never been raced. I have leaks with the rear main seal, and intermediate shaft flange seal. Any ideas why this may be occuring?

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  • arhou, , 24,300 mi

    leak at the rear main seal

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