The Mahle OE plain second ring set is a replacement piston ring package specified for a 4.075 in application and described as a plain ring configuration. Intended for engine rebuild and ring restoration work, this set provides OEM-level sizing for compatible Napier steel applications. Buyers should confirm bore and engine requirements before ordering to ensure correct ring selection.
Mahle Rings Performance Napier Steel 2nd Ring 4.075in x 1.0MM .136in RW Plain Ring Set