Piston Ring Set 4.155 1/16 1/16 3/16

The Hastings Piston Ring Set 4.155 1/16 1/16 3/16 (part number 2M5510035) is a premium ductile moly piston ring kit engineered for eight-cylinder engines requiring precise bore diameter and ring thickness specifications. This file-fit ring set features plasma moly coating on ductile iron construction, delivering superior wear resistance and reduced friction across the piston ring pack for extended engine durability.

The 4.155-inch bore specification matches engines designed for this displacement class, while the 1/16 x 1/16 x 3/16-inch ring thickness configuration balances compression sealing with low-tension operation. Low-tension ring design reduces drag on the crankshaft and improves fuel efficiency without sacrificing blow-by control. The plasma moly coating minimizes scuffing during initial break-in and extends ring and cylinder wall life by reducing adhesive wear—a critical consideration in high-performance and rebuilt engine applications where fresh rings must seat quickly against newly honed cylinder walls.

This Hastings piston ring set is ideal for engine builders, machine shops, and enthusiasts performing complete engine overhauls or rebuilds. Whether restoring a classic engine or refreshing a high-mileage block, this kit provides OEM-quality ring metallurgy and coating technology at competitive pricing. File-fit rings require hand-fitting to the specific piston and cylinder bore, making them suitable for builders who prioritize precision assembly and optimal ring gap clearance for their particular application.