Cast Aluminum Truck Piston Replacement 3802561 For 6CT 8.3L ISC QSC8.3 Engine

[Direct Fit & Precision Tolerances] Precision-engineered to match factory piston crown dimensions, pin bore alignment, and ring groove clearances for a seamless drop-in installation.

[High-Strength Aluminum Alloy Crown] Manufactured with premium heat-treated aluminum alloy to withstand thermal stress, high cylinder pressures, and continuous heavy-duty duty cycles.

[Optimized Bowl & Combustion Geometry] Designed with precision combustion bowl specifications to facilitate efficient fuel atomization, clean combustion, and maximum power density.

[Complete Assembly Kit] Full kit includes standard size piston, hardened piston pin, pin retaining clips, and premium alloy ring set for a comprehensive cylinder overhaul.

[Rigorous Dimensional & Pressure Testing] Individually factory-tested for weight balance, pin fit tolerances, and structural integrity to guarantee zero-defect field reliability.

[Direct Fit Replacement] Directly replaces part numbers 3802561, 3802562, and 3802563, cross-referenced with PAI 111424, Interstate-McBee M-3802561, and FP Diesel FP-3802561 (piston body 3926631, ring set 3802421, pin 3934047, snap ring 3920691).

[Engine Compatibility] Specially engineered for 3.9L 4-cylinder and 5.9L 6-cylinder B Series diesel platforms, including 4B3.9, 4BT, 4BTA, 6B5.9, 6BT, 6BTA, ISB, and QSB engines.

[Wide Equipment Fitment] Fits Dodge Ram 2500/3500 pickup trucks (1991.5-1998 5.9L 12V), excavators, wheel loaders, agricultural tractors, and industrial diesel generator sets.

[Restores Cylinder Power & Compression] Effectively resolves excessive blow-by, low compression, oil consumption, and piston scuffing during major engine overhaul services.