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The Mahle OE plain ring set is a gas-nitrided steel piston ring kit sized for a 4.000-inch bore with .043 and .157 inch ring widths, supplied as a bulk 48-piece pack. Targeted at gasoline engine service, the bulk format suits shops and rebuilders replacing rings across multiple engines. The overview highlights accurate bore sizing and the plain-ring construction for standard sealing needs.
Mahle Rings Perf Gas Nitride Steel 4.000 x .043 .157 RW Bulk Plain Ring Set (48 Qty Bulk Pack)
