Komatsu SAA6D114E-2 Diesel Engine Assembly | 8.3L 6-Cylinder Engine Compatible with Cum.mins QSC8.3 Komatsu PC300-7 PC350-7 Excavators

We supply complete, heavy-duty Komatsu SAA6D114E-2 and Cum.mins QSC8.3 diesel engine assemblies as well as precision engine overhaul parts. The 8.3L 6-cylinder turbocharged charge-air cooled diesel engine is direct-fit compatible with Komatsu SAA6D114E-2 and 6D114 configurations widely operating in 30 to 36-ton excavators and heavy wheel loaders, including Komatsu PC300-7 / PC300LC-7 / PC350-7 / PC350LC-7 / PC360-8 and WA400-5 / WA430-6. Engineered to heavy-duty aftermarket standards, our SAA6D114E-2 engine assemblies feature high low-end torque output, low fuel consumption, and long operating life under intense digging loads.

• 30–36 Ton Heavy Excavators: Primary power unit for Komatsu Dash 7 & Dash 8 series excavators in deep trenching, quarrying, and mass earthmoving.
• Heavy Wheel Loaders & Dozers: Delivers continuous high breakout torque for 5-6 ton wheel loaders (WA400) and crawler dozers (D65EX).
• Demolition & Quarry Crushing Operations: Maintains steady flywheel momentum during sudden hydraulic shock loads from heavy breaker hammers and pulverizers.
• Extreme Mining Environment Jobsites: Cast-iron cylinder block and heavy-duty oil cooling circuit resist severe dust and elevated ambient temperatures.

To assist field mechanics and machinery service managers in diagnosing performance issues, below is a troubleshooting breakdown for common Komatsu SAA6D114E-2 engine failures:

• Engine Overheating & Coolant Boiling: Frequently caused by blown cylinder head gaskets, water pump impeller cavitation, restricted oil cooler channels, or stuck thermostats during sustained heavy hydraulic digging.
• Excessive Black, White, or Blue Exhaust Smoke: Black smoke signals incomplete fuel combustion from clogged injection nozzles or a worn turbocharger. White smoke indicates cold cylinder misfires or coolant entering combustion chambers. Blue smoke points to engine oil burning past worn piston rings or valve stem seals.
• Hard Starting, Low Fuel Pressure & Engine Power Loss: Linked to fuel lift pump diaphragm wear, air in mechanical fuel lines, stuck injection pump plungers, or clogged fuel filter elements.
• High Crankcase Blow-by & Excessive Oil Consumption: Caused by scuffed 6D114 cylinder liners, stuck piston compression rings, or worn valve guides after long engine operating hours.
• Engine Knocking Sound & Unstable Idle Vibration: Triggered by improper injection timing, uneven cylinder compression, or worn crankshaft main bearing shells.

A: Yes. The Komatsu SAA6D114E-2 diesel engine assembly shares architecture with the Cum.mins QSC8.3 / C8.3. Flywheel housing, bellhousing alignment, engine mount locations, starter ports, and throttle linkage setups are 100% direct-fit compatible with Komatsu PC300-7, PC350-7, and PC360-8 excavators.

A: The Komatsu SAA6D114E-2 is an 8.27L (8.3L), 6-cylinder in-line, 4-stroke, turbocharged and air-to-air charge-cooled direct-injection diesel engine, producing output around 180 kW to 194 kW (242–260 HP) at 1900–1950 RPM.

A: Installing a factory pre-tested complete SAA6D114E-2 engine assembly avoids extended machine downtime, eliminates hidden costs from cracked cylinder blocks or ground crankshafts, and restores full digging power immediately.