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This Mahle plain piston ring set is specified as Steel Napier THM with 4.020-inch diameter, 1.5mm ring width, and .151 radial wall measurement. Packaged as a plain ring set, it provides the correct sized ring components for rebuilds calling for these dimensions. Mahle's OE lineage supports consistent sizing and interchangeability where this specification is required.
Mahle Rings Steel Napier THM 4.020 x 1.5MM .151 RW Plain Ring Set
