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 RG20003M Spal Cooling Fan(s) & Shroud

Spal Cooling Fan(s) & Shroud

Electroplated U-bolts and hardware included - for corrosion protection

1990-1990 Chevrolet R1500 Suburban

Molds are constantly renewed to ensure quality fit and finish

1999-2010 Ford F-250 Super Duty

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 RG20003M Spal Cooling Fan(s) & ShroudHastings 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