Piston Ring Set 4.030 Classic 5/64 5/64 3/16

The Piston Ring Set 4.030 Classic 5/64 5/64 3/16 from TOTAL SEAL is a precision-engineered ring kit designed for high-performance V8 engines requiring drop-in fitment and reliable sealing. Built for enthusiasts and engine builders who demand consistent compression, minimal blow-by, and stable oil control across a wide RPM range, this classic race piston ring set delivers the dependability necessary for both street and competition applications. The 4.030-inch bore specification makes this kit ideal for engines that have been bored to this popular over-size dimension, a common requirement in race engine builds and performance restorations.

This eight-cylinder piston ring set features a proven three-ring design with 5/64-inch top and second ring thickness and a 3/16-inch oil ring thickness, engineered for standard tension and optimal balance between sealing performance and ring life. The compression and scraper rings are manufactured from ductile iron and finished with plasma moly coating, a wear-resistant surface treatment that reduces friction, extends ring durability, and promotes faster ring seat-in during initial engine operation. The plasma moly technology also helps prevent scuffing and sticking, critical factors in maintaining consistent blow-by control and protecting cylinder wall integrity throughout the engine's service life.

Engine builders, hot rod restorers, and performance enthusiasts benefit most from this ring set during complete engine rebuilds, bore jobs, or when upgrading to a larger displacement platform. Installation is straightforward for technicians familiar with ring gap setting and proper ring placement in the grooves; however, correct ring end gap clearance—typically filed to manufacturer specifications for your specific engine block—ensures optimal performance and prevents ring-to-land contact. Compatible with any eight-cylinder engine bored to 4.030 inches, this TOTAL SEAL kit represents a cost-effective choice for reliable, repeatable combustion sealing in classic race engines, street rods, and restoration projects.