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Mahle plain ring set for a 4.630 in bore with a .135 RW and .043 in dimension is offered for engine rebuild applications. These plain rings match the Napier THM‑13 sizing and are intended for use where the specified bore and ring width are required, providing standard plain compression ring geometry in the listed dimensions.
Mahle Rings Steel Napier THM-13 4.630 Bore x .043in .135 RW Plain Ring Set (48 Qty Bulk Pack)
