Piston and Ring Set (91.10 mm STD) for Mitsubishi L300 2.5D 4D56 "Old Type" (1983-1996)

Heavy-duty piston and ring set with a Standard (STD) 91.10 mm diameter, specifically engineered for the "Old Type" 4D56 diesel engine found in Mitsubishi L300 models (1983-1996). Manufactured from high-grade, thermal-resistant aluminum alloys to withstand the mechanical stresses of commercial vehicle operations. Precision-machined to match original OEM specifications for optimized combustion chamber performance. The included ring set ensures a superior seal within the cylinder, restoring original engine torque, improving oil control, and ensuring long-term reliability in rebuilt diesel units.