Piston Ring Set 4.185 1/16 1/16 3/16

The Sealed Power Piston Ring Set 4.185 1/16 1/16 3/16 (SKU SEAR10248-65) is a precision-engineered ring kit designed for 8-cylinder engines requiring exact bore diameter and ring thickness specifications. This file-fit piston ring set delivers the compression sealing and oil control necessary for proper engine performance across a range of operating conditions.

Built from ductile iron with plasma moly coating, this ring set combines durability with proven thermal resistance. The 4.185-inch bore size accommodates mid-sized V8 engines, while the specified ring thicknesses—1/16 inch for the top and second rings and 3/16 inch for the oil ring—provide the balance between compression retention and blowby control essential for sustained engine integrity. Standard tension rating ensures proper contact with cylinder walls without excessive friction during initial break-in and normal operation.

This ring kit is suited for engine builders and mechanics performing overhauls, rebuilds, or restorations on compatible 8-cylinder platforms. Whether addressing worn compression seals in older engines or establishing baseline performance in freshly bored applications, file-fit rings require precise honing procedures to achieve proper clearances and sealing geometry. Plasma moly treatment enhances ring life by reducing wear rates and providing superior heat dissipation at the ring-to-wall interface.

Sealed Power is recognized within the engine rebuild and performance market for manufacturing components that meet OEM tolerances and durability standards. This ring set is a core component in any engine build that demands reliable compression sealing and oil management.