The Mahle OE plain ring set is a replacement piston ring kit featuring a grey iron top compression ring sized 3.149 x 1.5 mm in a plain finish. It provides essential sealing and compression restoration for engine rebuilds or maintenance, intended for use where these exact ring dimensions match the piston and bore specification supplied by the engine manufacturer.
Mahle Rings Performance Grey Iron Top Compression Ring 3.149 x 1.5MM Plain Ring Set