Komatsu SAA6D114E-3 Diesel Engine Assembly | 8.3L 6-Cylinder Engine Compatible with Cum.mins QSC8.3 Komatsu PC300-8 PC350-8 Excavators

We supply complete, heavy-duty Komatsu SAA6D114E-3 and Cum.mins QSC8.3 diesel engine assemblies as well as precision replacement overhaul parts. The 8.3L 6-cylinder turbocharged High-Pressure Common Rail (HPCR) direct-injection diesel engine is direct-fit compatible with Komatsu SAA6D114E-3 and 6D114 configurations widely deployed in 30 to 36-ton excavators and heavy wheel loaders, including Komatsu PC300-8 / PC300LC-8 / PC350-8 / PC350LC-8 / PC360-8 and WA430-6. Manufactured to heavy-duty aftermarket standards, our SAA6D114E-3 engine assemblies deliver Tier 3 fuel atomization efficiency, low exhaust emissions, and exceptional durability under intense hydraulic digging loads.

• 30–36 Ton Heavy Hydraulic Excavators: Primary power unit for Komatsu Dash 8 series crawler excavators performing heavy quarry excavation, mass earthmoving, and deep trenching.
• Heavy Wheel Loaders & Material Handling: Delivers rapid throttle acceleration and high breakout force for 5–6 ton wheel loaders (WA430-6).
• Demolition & Quarry Crushing Operations: High-pressure common rail system maintains steady RPM during severe hydraulic shock loads from breaker hammers and pulverizers.
• Extreme Mining & High Dust Jobsites: Heavy-duty cast-iron block and air-to-air aftercooling resist elevated ambient heat and fine dust contamination.

To assist equipment owners and field mechanics in troubleshooting engine performance drops, below is a diagnostic guide for common Komatsu SAA6D114E-3 issues:

• HPCR Common Rail Pressure Loss & Engine Stalling: Frequently caused by fuel contamination degrading common-rail injectors, high-pressure fuel pump wear, or stuck SCV (Suction Control Valve) solenoids under heavy digging load.
• Engine Overheating & Coolant Boiling: Triggered by blown cylinder head gaskets, EGR cooler thermal cracking, water pump impeller wear, or clogged oil cooler channels during continuous summer shifts.
• Excessive Black, White, or Blue Exhaust Smoke: Black smoke indicates faulty common-rail fuel atomization or turbocharger boost leakage. White smoke points to cold cylinder misfires or head gasket coolant leaks. Blue smoke signals oil burning past worn piston rings or valve stem seals.
• High Crankcase Blow-by & Oil Consumption: Caused by scuffed 6D114 cylinder liners, stuck piston compression rings, or worn valve guides after extended engine hours.
• Engine Knocking & Rough Idle Vibration: Resulting from lost injector IMA calibration codes in the ECU, uneven cylinder compression, or worn main crankshaft bearings.

A: Yes. The Komatsu SAA6D114E-3 diesel engine assembly shares architecture with the Cum.mins QSC8.3 / QSC8.3-CM850. Flywheel housing, bellhousing alignment, engine mount brackets, starter ports, and ECU wiring interfaces are 100% direct-fit compatible with Komatsu PC300-8, PC350-8, and PC360-8 excavators.

A: The Komatsu SAA6D114E-3 is an 8.27L (8.3L), 6-cylinder in-line, 4-stroke, turbocharged and air-to-air charge-cooled HPCR common-rail diesel engine, producing rated output around 194 kW to 205 kW (260–280 HP) at 1950 RPM.

A: Installing a factory pre-tested complete SAA6D114E-3 engine assembly avoids extended machine downtime, eliminates hidden costs from cracked cylinder blocks or ground crankshafts, and restores full digging power immediately.