TS Gapl. Piston Ring Set GM Duramax 6.6L 4.055

The Total Seal Piston Ring Set for GM Duramax 6.6L with 4.055-inch bore diameter is a precision-engineered ring kit designed for street applications requiring reliable compression sealing and oil control. Built from steel with standard tension characteristics, this ring set maintains OEM-level performance across the complete operating range of the Duramax diesel engine while delivering the durability required in demanding driving conditions.

The kit features a 3.0mm compression ring, 2.0mm intermediate ring, and 3.0mm oil control ring configuration—a proven geometry for balancing gas sealing efficiency with oil scraping capability in heavy-duty diesel applications. This three-ring stack design ensures minimal blowby while preventing excessive oil consumption, critical for maintaining fuel economy and engine longevity. Total Seal's manufacturing standards deliver consistent ring-to-bore fit, reducing installation variation and ensuring uniform pressure sealing across all cylinder positions from day one.

This piston ring set is suited for owners rebuilding or refreshing their Duramax 6.6L engine who prioritize OEM-specification performance without custom ring tuning. Street-focused applications benefit from the standard tension approach, which avoids the complexity of premium or specialty ring sets while delivering proven reliability. The 4.055-inch bore specification ensures precise fitment for stock Duramax cylinder geometry, eliminating the guesswork in ring selection during full engine rebuilds.