Mahle moly top compression ring sized 3.8950in by 5/64in, supplied as a complete ring set. This moly-clamped top compression ring is intended for use where the specified bore and thickness are required and is offered to match applications calling for that exact ring dimension during engine ring replacement or assembly.
Mahle Rings 3.8950in X 5/64in Moly Claimer Top Compression Ring Moly Ring Set