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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 a bulk replacement intended for engine rebuilds. These plasma‑moly treated steel rings provide durable sealing for piston bores and consistent seating during break‑in. Supplied as a 48‑count bulk pack, they suit repeated rebuilds or inventory stocking for routine engine service.
Mahle Rings Plasma Moly Steel Top Comp Ring 4.135in x .0625in .190in RW Ring Set (48 Qty Bulk Pack)
