Mahle OE plain piston ring sets in bulk are supplied to meet OE sizing for rebuilds and engine assembly, with the listed bore and thickness dimensions. Offered as bulk packaging, these plain ring sets allow professional shops and rebuilders to restock rings sized for the specified bores. The overview emphasizes correct sizing and OE-oriented application rather than describing aftermarket performance upgrades.
Mahle Rings Performance Napier THM-13 4.035in x 1.5MM Plain Ring Set (48 Qty Bulk Pack)