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This Mahle OE plain ring set is a performance second ring specified at 4.315 in diameter with .043 and .135 in cross-section dimensions in a replacement plain ring configuration. It serves as a direct piston ring replacement for rebuilds where these sizes are required. The overview clarifies function and sizing for engine assembly use without implying material or fit beyond the provided dimensions.
Mahle Rings Performance Steel Napier 2nd Ring 4.315in x .043 .135in RW Plain Ring Set
