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The Mahle OE moly ring set is specified for a 4.000‑inch bore and includes a 5/64‑inch moly top ring, offered as an OE‑style replacement set. Intended for engine rebuilds or overhauls requiring those bore and ring dimensions, the set provides the stated ring thickness and moly top‑ring material for proper sealing and wear characteristics compatible with standard machining tolerances.
Mahle Rings 4.000in Bore Dia 5/64in Moly Claimer Top Ring Moly Ring Set
