RMS Replacement

Porsche Rear Main Seal (RMS)


RMS problems are common on Porsche Boxster, Cayman, 996 and 997 models. Severe cases can cause contamination to the clutch friction plate, resulting in poor gear selection and loss of performance. However, the majority of cases we have seen over the years, have resulted in nothing more than a slight oil leak.

The rear main seal is located at the back of the engine where the crankshaft comes through the casing to meet the flywheel and clutch assembly. It is designed to stop engine oil leaking around the crankshaft.

If you discover an Oil leak on your Porsche 996 or 997, there is a strong possibility the RMS has worn and needs replacing. Another possibility is the IMS bearing seal which we would recommend replacing at the same time as the RMS.

If it is only a small weep of oil, we would usually recommend leaving it until you require a clutch replacement.


How much does it cost to replace the rear main seal (RMS)

The rear main seal itself is an inexpensive part but replacing it is a labour intensive service where removal of the entire gearbox is required to access the RMS. In some cases, suspension and exhaust components may also require removal. The replacement requires a specialist tool to ensure precise alignment of the seal which is then pressed into place resulting in a snug (leak free) fit.



The cost is dependant on your specific Porsche model and whether or not you wish to replace the RMS at the same time as a clutch replacement. If you would like to discuss this service or for any advice regarding your Porsche RMS, please contact one of our team on 01423 865 602 or complete the contact form linked below.

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