3.0L RSR/RS Engine Case

3.0L Engine case for the Porsche 911 RSR and RS. The engine case halves are identified with casting numbers 911.101.103.0R and 911.101.104.0R. The engine code is 911/74 and the serial number is 6840133.

The case was masterfully repaired by Ollie's engineering after being damaged by a broken connecting rod. It has been fully machined back to original specs and has been shuffle pinned. It is completely as-new and ready to be assembled as a new engine. 

At this time we don't have information on the exact car this engine case comes from. The number of the case falls towards the end of 1974 RS/RSR production. We would be very pleased to reconnect this engine case with its original home. If you have any information about the chassis this case comes from, please contact us at


Please inquire about availability at, by calling 510-907-9700, or filling out the form below.