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This Mahle OE plain ring set is a performance second ring specified at 4.285 in diameter with .043 and .135 in sectional dimensions. Intended for engine rebuilds where those exact measurements are required, the plain ring set supplies the matching sizing for piston assemblies. The description clarifies product purpose and sizing without claiming materials or broader compatibility beyond the listed dimensions.
Mahle Rings Performance Steel Napier 2nd Ring 4.285in x .043 .135in RW Plain Ring Set
