This Mahle plain ring set is a second ring specified at 3.3858 inches diameter with 1.2mm thickness and a .135in ring width in a Napier plain configuration. Suited for engine rebuilds and maintenance, the set provides precise ring dimensions for matching piston and bore specifications during assembly or when replacing worn rings to restore proper sealing and combustion control.
Mahle Rings Performance Steel Napier 2nd Ring 3.3858in x 1.2MM .135in RW Plain Ring Set