Can anyone tell me where to find the serial number of the engine?
Thanks

Mine was located just inside the rear engine bay doors. It was just lying there and has been put inside the coach for safe keeping. At some point in time, the glue failed but at least it was still there.

If you can't locate it, contact the chassis builder. Mine is on a Gillig chassis and they can provide just about anything when it comes to parts or information concerning anything except the coach. If it has to do with the engine, transmission or anything chassis, they can help you.