Piston Ring Set 4.375 Gapls 2nd 1/16 1/16 3/16

The Total Seal Piston Ring Set 4.375 Gapless 2nd 1/16 1/16 3/16 is a precision-engineered gapless piston ring kit designed for 8-cylinder engines with 4.375-inch bore diameter. This file-fit ring set features Total Seal's gapless 2nd ring technology, which eliminates the traditional ring gap to reduce blowby, improve compression, and enhance combustion efficiency—critical for high-performance and rebuild applications where maximum power retention matters.

Manufactured from ductile iron in natural finish, this ring set delivers standard tension performance with three distinct ring thicknesses: 1/16-inch top ring, 1/16-inch second ring, and 3/16-inch oil ring. The file-fit design requires custom fitting to the exact bore and ring groove dimensions of your engine block, ensuring proper contact pressure and seal integrity. This approach eliminates inconsistencies found in standard mass-produced rings and allows for optimized clearances that reduce friction while maintaining reliability across varying engine speeds and loads.

This ring kit is ideal for engine builders, hot rodders, and performance enthusiasts rebuilding 8-cylinder engines where compression and efficiency are non-negotiable. Whether restoring a classic muscle car, preparing an engine for competition, or maximizing output in a street performance build, the gapless design provides measurable gains in power delivery and reduces unburned fuel loss. File-fit rings require careful measuring and fitting during installation, making them the choice of builders who demand precision and understand that proper ring installation directly correlates to engine performance and longevity.