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Komatso D375A-6R Engine

Komatsu D375A-6R Engine Assembly | Komatsu SAA6D170E-5 Diesel Engine

OEM-spec Komatsu SAA6D170E-5 6-cylinder diesel engine assembly for Komatsu D375A-6R 70-tonne heavy mining dozers. Delivering 636 HP (474 kW) with High-Pressure Common Rail (HPCR) direct injection, turbocharging, and air-to-air aftercooling.

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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

  • 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.

  • 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.

  • 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.

  • 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.

  • 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