Upgrade and maintain your Komatsu crawler dozer’s travel performance with the genuine Final Drive Pinion Gear, model 103-27-31211. Expertly engineered to OEM specifications, this precision-machined pinion seamlessly interfaces with the final drive assembly, providing reliable torque transmission from the hydraulic motor to the sprocket.
Constructed from premium alloy steel and heat-treated for maximum durability, the 103-27-31211 pinion delivers exceptional wear resistance under heavy loads and harsh operating conditions. Ideal for Komatsu D20A-6, D20P-6, D20PL-6, D20PLL-6, D20Q-6, D20QG-6, D20S-6, D21A-6, D21E-6, D21P-6, D21PG-6, D21PL-6, D21Q-6, D21QG-6, D21S-6, and DDM020-6 models (SN 60001–61495), this part is critical for maintaining smooth, efficient travel and minimizing downtime.
Each pinion weighs 3 kg and ships in a robust package measuring 55 × 60 × 45 cm (gross weight 50 kg) to ensure safe delivery. Compatible with OEM bearing sets and seals, the 103-27-31211 pinion is the professional’s choice for rebuilds, field repairs, and preventive maintenance.
Key Benefits:
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OEM-quality fit and finish for precise gear meshing
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Heat-treated alloy steel resists abrasion and fatigue
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Direct replacement for Komatsu part 103-27-31211 and aftermarket cross-reference RKMT38848
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Facilitates smooth travel motor torque delivery, reducing slippage and noise
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Simplifies service with standard mounting interface and hardware compatibility
Whether replacing worn pinions in a heavy-duty rental fleet or upgrading an aging dozer in the field, trust the Komatsu 103-27-31211 final drive pinion for performance, reliability, and longevity.
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