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This Mahle plain ring set (Fire Power PC479) is a standard‑tension piston ring kit for 4.000 in. bores. Offered as a plain ring set with standard tension, it serves as a direct replacement option where a 4.000 in. bore and STD tension specification are required. Use it when restoring or rebuilding engines that specify the PC479 standard‑tension, 4.000 in. plain ring configuration.
Mahle Rings Fire Power PC479 Std Tension 4.000in Plain Ring Set
