MAHLE Plasma Moly File-to-fit piston ring sets are designed to fit most OEM and aftermarket Ford Modular 4.6 and 5.4 pistons. These rings come as a complete set with 1.5mm top rings, 1.5mm 2nd rings, and 3mm oil rings. They are available in +.020", and +.030" bore sizes and are all +.005" for file fitting.
MAHLE pioneered the use of piston ring simulation and computer development tools to engineer rings that provide “free” horsepower by successfully minimizing friction. MAHLE’s ultra flat ring flanks and precision finish also maximize ring to piston sealing. The difference is evident on the dyno and the track.
The top rings are positive twist ductile iron, barrel faced, plasma-moly inlaid. The 1.5mm ring sets second rings are reversed twist taper faced cast iron.
These 1.5mm sets come with standard tension oil control rings.
