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The Mahle OE plasma‑moly steel top compression ring set (4.135 in x 0.0625 in, 0.190 in RW) is supplied as a bulk replacement intended for engine rebuilds and inventory stocking. Plasma‑moly treatment enhances wear resistance and promotes consistent ring seating for reliable compression. This bulk pack supports repeated rebuilds and routine engine service needs.
Mahle Rings Plasma Moly Steel Top Compression Ring 4.135in x .0625in .190in RW Bulk Moly Ring Set
