Piston Ring Set 4.165 1.2 1.2 3.0mm

The Hastings Piston Ring Set 4.165 1.2 1.2 3.0mm is a precision-engineered component designed for serious engine builders and mechanics performing top-end rebuilds or performance modifications. Piston rings are critical to engine performance, sealing the combustion chamber, controlling oil consumption, and transferring heat from the piston to the cylinder wall.

This Hastings ring set features a 4.165-inch bore diameter with three-piece construction: two compression rings (1.2mm top, 1.2mm second) and one 3.0mm oil control ring. The compression rings seal combustion pressure and promote efficient burn, while the thinner oil control ring manages crankcase lubrication without excessive consumption. Hastings rings are manufactured to tight tolerances using premium cast iron, ensuring consistent ring gap, proper tension, and reliable sealing across the full engine operating range.

Mechanics and engine builders choosing the Hastings Piston Ring Set benefit from OEM-equivalent quality at a competitive price point. Proper installation requires correct ring gap verification, precise groove cleaning, and attention to detail to ensure optimal performance. This ring set is ideal for those restoring classic engines or upgrading for enhanced performance.