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Mahle Performance Plain Ring Set Napier THM-13 plain ring pack, sized 4.180 x .043 with .135in RW, is supplied in a bulk 48-quantity pack for engine rebuilds or production use. These plain rings are intended as piston compression rings matching the stated dimensions and tension, provided in bulk for shops or large-scale replacement needs where the Napier THM-13 specification is required.
Mahle Rings Performance Napier THM-13 4.180 x .043 .135in RW Plain Ring Set (48 Qty Bulk Pack)
