Description
OEM-Quality Komatsu D475A-5 Diesel Engine Assembly
Power through high-tonnage mining overburden, heavy slot-dozing, and hard-rock ripping operations with an OEM-spec Komatsu D475A-5 Diesel Engine Assembly. Built around the high-displacement Komatsu SAA12V140E-3 / SDA12V140E-3 30.48-liter V12 diesel platform, this engine serves as the main power plant for Komatsu D475A-5, D475A-5EO, and D475A-5SD (100-tonne operating weight class) crawler dozers.
Delivering a massive 899 Gross Horsepower (671 kW) at 2,000 RPM, this V12 engine combines twin turbocharging, air-to-air aftercooling, and High-Pressure Common Rail (HPCR) direct injection to maximize fuel efficiency and drawbar pulling power under severe thermal loads.
Key Features & Benefits
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High-Output V12 Engine Architecture: 12-cylinder V-configuration with a massive 30.48-liter displacement generates sustainable torque for continuous 24/7 mining shifts.
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High-Pressure Common Rail (HPCR) Direct Fuel Injection: Electronically controlled fuel delivery optimizes combustion timing and atomization, lowering fuel consumption and exhaust smoke emissions.
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Twin Turbocharged & Air-to-Air Aftercooled (AAC): Dual turbochargers deliver high intake air density for instantaneous throttle response under heavy ripping loads.
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Heavy-Duty Cast Iron Block & Forged Steel Crankshaft: Built to absorb high peak combustion pressures and continuous frame torsion in high-impact rock benches.
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Tier 3 / Stage IIIA Emissions Compliance: Engineered to meet global industrial emission standards while maintaining maximum horsepower output.
Verified Technical Specifications
| Parameter | Specification |
| Compatible Machine Models | Komatsu D475A-5 / D475A-5EO / D475A-5SD Super Dozer |
| Dozer Operating Weight Class | 102,500 – 108,000 kg (225,970 – 238,100 lbs) |
| Engine Model | Komatsu SAA12V140E-3 / SDA12V140E-3 |
| Engine Configuration | 4-Stroke, Water-Cooled, Direct Injection V12 |
| Aspiration | Twin Turbocharged & Air-to-Air Aftercooled |
| Gross Horsepower | 671 kW / 899 HP @ 2,000 RPM |
| Net Horsepower | 641 kW / 860 HP @ 2,000 RPM |
| Displacement | 30.48 Liters (1,860 cu in) |
| Bore x Stroke | 140 mm x 165 mm (5.51 in x 6.50 in) |
| Engine Oil Sump Refill Capacity | 121 L (32.0 gal) |
| Cooling System Refill Capacity | 210 L (55.5 gal) |
| Application | Main Power Plant for 100-Ton Dozer Propulsion & Hydraulics |
