TS Gapl. Piston Ring Set GM Duramax 6.6L 4.055

The Total Seal Piston Ring Set for GM Duramax 6.6L with a 4.055-inch bore is designed for diesel engine builders, performance shops, and mechanics who are rebuilding high-mileage or modified Duramax powerplants. Piston rings are essential components that seal combustion pressure, regulate oil consumption, and maintain compression, making high-quality rings vital for any engine overhaul or turbo upgrade.

This piston ring set is manufactured to precise bore specifications (4.055 inches) to ensure proper fit, gap clearance, and radial tension, which helps prevent blow-by, oil loss, and ring flutter. Total Seal is known for its precision ring design that withstands the extreme pressure and temperature cycles of modern heavy-duty engines, providing superior sealing efficiency and durability.

Ideal for anyone rebuilding a GM Duramax 6.6L engine, this set is suitable for restoring stock LB7, LLY, LBZ, or LMM engines to OEM specifications or for assembling modified long-blocks aimed at increased boost and horsepower. Proper installation requires honing the cylinder walls to the manufacturer's crosshatch specification and checking the gap of each ring before assembly to ensure optimal performance.