Description

Diesel Engine Piston Assembly M-8675 The M-8675 STD Piston Assembly is a precision-engineered diesel piston set designed for Cummins ISB engines equipped with FGT turbochargers . This listing includes six (6) standard-size pistons , making it ideal for full engine rebuilds, overhauls, and in-frame repairs requiring matched components and consistent performance. Manufactured to meet or exceed OEM specifications, the M-8675 piston is a direct replacement for Cummins OE part number 4089715 . Each piston is produced from high-strength alloy material to withstand elevated combustion pressures and temperatures associated with turbocharged diesel operation. Optimized crown and skirt geometry promote efficient combustion, controlled thermal expansion, and reduced friction. When installed with the correct rings, pins, and liners, this piston assembly helps restore factory compression, reduce blow-by, and improve overall engine efficiency. The M-8675 STD piston set is commonly used in commercial trucks, buses, construction equipment, and industrial applications running Cummins ISB FGT turbo engines , where reliability and durability are critical.