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The Mahle top piston ring is a 4.075" (+0.020) stainless-steel 1/16 AP top ring supplied as a single-cylinder service piece for engine rebuilds. Specified for applications requiring the +0.020 oversize dimension, it restores proper ring-to-bore clearance and sealing. Use it when matching ring size to an overbored cylinder to maintain combustion control and oil management during engine reassembly.
Mahle MS DMAX Top Ring 1/16 AP SS 4.075 (+020) 1 cyl
