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The Mahle OE moly top ring set is a plasma-steel piston top ring featuring an HVOF molybdenum surface for a 4.000 in bore with 1.0 mm thickness and .143 in ring width. Sold as an individual set, it provides the explicit bore and ring-section sizing required for piston servicing where a 4.000 in top ring with HVOF moly treatment is specified.
Mahle Rings Performance Plasma Steel Top Ring 4.000in x 1.0MM .143in RW HVOF Moly Ring Set
