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.

RepairPal ™Car Genius

Ask our experts about your Porsche.

RepairPal Car Genius™ is a free resource for vehicle owners seeking advice on maintenance, auto repair, shop inquiries, estimates, and finding a trustworthy repair shop in your area.

Call us at 877-913-1554

Available 9am – 6pm ET Monday through Friday

Call Our Experts

Exceptional warranty

Shops offer at least a 12-month or 12,000-mile warranty.

Satisfied customers

We ensure high satisfaction through verified customer reviews.

Transparent pricing

You'll get a Fair Price Guarantee on all RepairPal estimates.

Millions trust us for auto repair — RepairPal Certified^® locations must pass a rigorous approval process to ensure quality, customer satisfaction, and fair pricing.

Find a Repair Location

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

Problem overview

Porsche 911 vehicles with this problem

Need a diagnosis? Trust our Porsche experts.

Search for another problem

Ask our experts about your Porsche.