Piston Ring Set 4.040 1/16 1/16 3/16

The Piston Ring Set 4.040 1/16 1/16 3/16 is an essential internal engine component engineered for builders and mechanics undertaking serious engine work, overhauls, or custom modifications. This Hastings ring set is particularly suited for 4.040-inch bore applications, making it ideal for those restoring classic engines or rebuilding after high-mileage wear.

Quality piston rings directly impact compression, blowby control, and oil consumption. This piston ring set features a 4.040-inch bore diameter with a carefully calibrated profile: 1/16-inch top compression ring, 1/16-inch second ring, and 3/16-inch oil control ring. The top two compression rings minimize blowby and maintain optimal gas pressure, while the wider oil ring prevents excessive oil from reaching the combustion chamber—critical for fuel economy and spark plug longevity.

Mechanics and engine builders rely on this Hastings piston ring set for its precision manufacturing and proven metallurgy. The design optimizes ring-to-groove fit while minimizing flutter and maintaining sealing performance across a broad RPM and load range. This makes it a reliable choice for anyone looking to enhance engine performance and longevity.