OME BP51 serial number location May 16, 2022 21:58 Updated The serial number can be located on the shock body, laser etched just above the compression/rebound collar. Related articles OME BP51 Rebuild kits Does it really matter that my vehicle sits a little lower when loaded? What is the benefit of an external canister? What does BP-51 stand for? What is compression and rebound damping? Comments 0 comments Please sign in to leave a comment.