Piston Ring Set 4.020 1.2 1.2 3.0mm

The Piston Ring Set 4.020 1.2 1.2 3.0mm by Hastings is designed for high-performance engine rebuilds and restoration projects where precision ring tolerances are crucial for optimal engine performance. This set is ideal for classic muscle cars, modern performance builds, and everyday street machines, ensuring that quality piston rings are a vital component for sealing the combustion chamber and regulating oil consumption.

Featuring a 4.020-inch bore diameter, this ring set includes a compression ring thickness of 1.2mm, a secondary compression ring also at 1.2mm, and an oil control ring of 3.0mm. The design balances sealing efficiency with minimal friction, and Hastings manufactures these rings using premium cast iron and ductile iron materials to ensure consistent contact with cylinder walls throughout the stroke.

Engine builders and automotive enthusiasts will benefit from this Hastings ring set, which optimizes blow-by prevention during the power stroke while the oil control ring effectively prevents excess oil from entering the combustion chamber. This is critical for maintaining proper fuel economy and emissions compliance, making it a reliable choice for anyone looking to enhance engine performance.