Piston Ring Set 4.165 1/16 1/16 3/16

The Piston Ring Set 4.165 1/16 1/16 3/16 from Hastings is an essential engine rebuild component engineered for serious builders and mechanics tackling complete engine overhauls or restoration projects. When you're boring out an engine block, restoring a vintage performance build, or replacing a worn engine, quality piston rings are non-negotiable—they control blow-by, regulate oil consumption, and maintain compression ratios that directly affect horsepower and efficiency. This Hastings ring set is manufactured to OEM tolerances and specifications, ensuring precise fitment on 4.165-inch bore diameter applications.

The ring set features a three-piece design with compression ring widths of 1/16 inch, 1/16 inch, and 3/16 inch, a proven geometry that balances seal integrity with minimal friction loss. The top and second rings handle combustion pressure containment and blow-by control, while the oil-control ring (3/16 inch) manages crankcase oil return, preventing excess oil from entering the combustion chamber. Hastings piston rings are manufactured from high-carbon steel alloys and feature hard-anodized or chrome-plated surfaces for durability and extended ring life, critical for modern fuel blends and extended drain intervals.

This ring set is ideal for mechanics rebuilding small-block or mid-range displacement engines—common in street performance, classic muscle car restoration, and marine applications. Verify bore diameter, piston pin height, and ring groove specifications against your engine block before ordering to ensure perfect fitment. Proper ring installation requires honing the cylinder walls to the correct finish (typically 25–45 Ra) and careful gapping if your application demands it; following Hastings' specification sheet during installation guarantees optimal compression and longevity. For any engine requiring 4.165-inch bore rings, this Hastings set delivers the precision and reliability that rebuilds demand.