Hastings "Tough Guy" Racing File-Fit Piston Ring Set - Bore Size: 4.145" Top Ring: 1/16", Second Ring: 1/16", Oil Ring: 3/16" - Oil Ring Tension: Standard 61-61 PLUS W/Dog Bone Harness and Pro

W/Dog Bone Harness and Pro Adjusters on Harness

Cut to Fit Axles

2003-2007 Freightliner MB Line

For 2019 Late Model Body

Hastings "Tough Guy" Racing File-Fit Piston Ring Set - Bore Size: 4.145" Top Ring: 1/16", Second Ring: 1/16", Oil Ring: 3/16" - Oil Ring Tension: Standard 61-61 PLUS W/Dog Bone Harness and ProHastings 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