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The Mahle OE Moly top ring set is a plasma-steel, moly-coated top piston ring intended for OE-style rebuilds and performance applications requiring the specified 4.285-inch diameter and 1.0 mm section. Supplied as a precision ring set, it restores proper sealing and ring face contact for engines built to these dimensions, presented without speculative claims beyond the listed sizing.
Mahle Rings Performance Plasma Steel Top Ring 4.285in x 1.0MM .143in RW HVOF Moly Ring Set
