Piston Ring Set 4.290 5/64 5/64 3/16

The Hastings Piston Ring Set 4.290 5/64 5/64 3/16 is a precision-engineered ring assembly designed for engine rebuilds and high-performance applications where OEM or OEM-equivalent specifications are required. This piston ring set is particularly suited for four-cylinder engines, making it an ideal choice for those performing a full engine overhaul or restoring a classic vehicle.

Featuring a 4.290-inch bore diameter, the set includes two compression rings at 5/64 inch thickness and a 3/16-inch oil control ring. The compression rings work together to seal the combustion chamber effectively, while the oil ring helps manage oil consumption and reduce carbon buildup. Hastings' manufacturing process ensures consistent material hardness and precise gap tolerances, which are critical for preventing premature wear.

Whether you're upgrading worn components in a modified engine or seeking reliable power delivery and longevity, this piston ring set is essential for optimal engine performance. Its design directly impacts blow-by reduction, leading to better compression, cleaner emissions, and improved fuel efficiency in four-cylinder applications.