Total Seal Street Piston Rings - 3.740 in Bore - Ford Powerstroke 4301337R Because of its robust additive

Because of its robust additive system and its scientifically improved viscosity modifier additive system

It performs the simple function of keeping crud out of the bearings and its tapered design also helps to quickly align the wheel with the studs

1986-1991 GMC Safari

Cast aluminum construction

Total Seal Street Piston Rings - 3.740 in Bore - Ford Powerstroke 4301337R Because of its robust additiveProduct Description: Piston Rings Street 3. 740 in Bore 2. 3 mm x 2. 0 mm in x 3. 44 mm Thick Standard Tension Steel Ford Powerstroke Total Seal's patented Gapless Piston rings provide increased performance through unmatched sealing of the cylinder and combustion gasses in the combustion chamber. Increased horsepower and torque along with longer engine life are just a couple of the reasons why Total Seal's Gapless A Piston rings are the best rings