Hastings "Tough Guy" Racing Standard Piston Ring Set - Bore Size: 4.000" Top Ring: 1/16", Second Ring: 1/16", Oil Ring: 3/16" - Oil Ring Tension: Standard H77803FXS 1975-1991 Ford F-150

1975-1991 Ford F-150

Micro In-Line

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4L60 / 4L60E / 4L65E / TH700R4

1976-1987 Oldsmobile Cutlass Salon

Hastings "Tough Guy" Racing Standard Piston Ring Set - Bore Size: 4.000" Top Ring: 1/16", Second Ring: 1/16", Oil Ring: 3/16" - Oil Ring Tension: Standard H77803FXS 1975-1991 Ford F-150Hastings racing piston rings deliver race winning performance in even the most extreme applications. The low tension, low friction design provides unsurpassed combustion seating and exceptional sealing. Each set includes plasma moly, high tensile cast iron top rings; reverse twist, taper faced cast iron second rings, and choice of standard or low tension Flex Vent stainless steel oil control rings. Low tension oil rings make significant increases in