Description
OEM-Quality Komatsu D375A-6R Diesel Engine Assembly
Power heavy production dozing, slot trenching, and hard-rock ripping operations with an OEM-spec Komatsu D375A-6R Diesel Engine Assembly. Built around the high-displacement Komatsu SAA6D170E-5 23.15-liter in-line 6-cylinder diesel platform, this engine serves as the primary power plant for Komatsu D375A-6R (70-tonne operating weight class) mining and heavy construction dozers.
Delivering 636 Gross Horsepower (474 kW) and 610 Net Horsepower (455 kW) at 1,800 RPM, this engine combines turbocharging, air-to-air aftercooling, and High-Pressure Common Rail (HPCR) fuel injection to ensure high rimpull torque and low operating fluid consumption in extreme ambient conditions.
Key Features & Benefits
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High-Displacement In-Line 6-Cylinder Architecture: 23.15-liter engine displacement provides optimal low-end lugging torque for heavy blade loading and deep ripper penetration.
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High-Pressure Common Rail (HPCR) Direct Fuel Injection: Electronically managed multi-stage fuel injection delivers precise combustion timing, lowering smoke emissions and maximizing fuel economy.
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Turbocharged & Air-to-Air Aftercooled (AAC): Forced-induction system optimizes intake air volume, keeping exhaust gas temperatures (EGT) low during continuous 24/7 mining shifts.
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Heavy-Duty Cast Iron Cylinder Block & Steel Pistons: Engineered with high structural rigidity to resist block distortion, thermal stress, and torsional vibration under high-load dozing cycles.
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Tier 3 / Stage IIIA Regional Emissions Compliance: Designed for high reliability in rugged global mining regions without sacrificing power density.
Verified Technical Specifications
| Parameter | Specification |
| Compatible Machine Models | Komatsu D375A-6R Mining Dozer |
| Dozer Operating Weight Class | 71,600 – 72,900 kg (157,850 – 160,700 lbs) |
| Engine Model | Komatsu SAA6D170E-5 |
| Engine Configuration | 4-Stroke, Water-Cooled, Direct Injection In-Line 6-Cylinder |
| Aspiration | Turbocharged & Air-to-Air Aftercooled |
| Gross Horsepower | 474 kW / 636 HP @ 1,800 RPM |
| Net Horsepower | 455 kW / 610 HP @ 1,800 RPM |
| Displacement | 23.15 Liters (1,413 cu in) |
| Bore x Stroke | 170 mm x 170 mm (6.69 in x 6.69 in) |
| Engine Oil Sump Refill Capacity | 87 L (23.0 gal) |
| Cooling System Refill Capacity | 160 L (42.3 gal) |
| Application | Main Power Plant for 70-Ton Mining Dozer Operations |


