The Final Drive Pinion Shaft 103-27-31212 is an essential component in the final drive gear system of Komatsu bulldozers, specifically engineered for models in the D20 and D21 series. This aftermarket replacement part matches or exceeds OEM specifications, offering the same level of performance and reliability while being more cost-effective. It is commonly used in heavy construction equipment to transmit power efficiently from the drive system to the tracks, ensuring smooth operation and longevity under demanding conditions.
Key Specifications:
- Part Number: 103-27-31212 (alternative: 1032731212)
- Weight: Approximately 3 kg (6.6 lbs)
- Material: High-strength steel for enhanced durability
- Compatibility: Fits Komatsu models including D20A-6, D20A-7, D20A-7-M, D20A-8, D20AG-7, D20P-6, D20P-6A, D20P-7A, D20P-7A-M, D20P-8, D20PG-7A, D21A-6, D21A-7, D21A-7T, D21A-7T-M, D21A-8, D21A-8E0, D21A-8T, D21AG-7, D21E-6, D21P-6, D21P-6A, D21P-6B, D21P-8E0, and select D31 variants (e.g., D31A-20, D31E-20, D31P-20, D31Q-18, D37A-5). Always verify compatibility with your specific machine serial number for optimal fit.
- Installation Notes: Professional installation recommended. May involve exposure to mineral oils or other substances; refer to safety guidelines.
Sourced from reputable aftermarket suppliers with over a decade of experience in construction machinery parts, this pinion shaft is built to withstand rigorous use in bulldozers, excavators, and similar equipment. It comes with standard packaging and is available for worldwide shipping. For best results, pair with compatible final drive gears and consult Komatsu service manuals for maintenance.
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