Used Mitsubishi S4K Diesel Engine for Sale | 4.2L 4-Cylinder Turbo Rebuilt for Excavators

Are you looking for a reliable used diesel engine for your excavator or construction equipment? This fully rebuilt Mitsubishi S4K diesel engine delivers proven performance for demanding applications. With a displacement of 4.2 liters and a turbocharged inline 4-cylinder design, this used engine for sale is a trusted power solution for excavators, generators, and other heavy equipment. The S4K belongs to Mitsubishi’s SK series and is known for its high reliability, durability, and strong performance. We have completely overhauled this used engine for sale to restore its original factory performance. It gives you a cost‑effective way to keep your heavy equipment working.

Applications & Compatibility

• Excavators: Hyundai 10 TON, -7 Series; Cat excavators

• Motor Graders: Mitsubishi MG130 (95 HP @ 2300 RPM variant)

• Industrial Equipment: Generators, construction machinery, marine applications, and agricultural machinery

Key Features

• Proven Mitsubishi Reliability: The S4K engine features a robust cast iron block and cylinder head. It is designed for continuous heavy-duty operation in demanding construction environments.

• Turbocharged Performance: The turbocharger provides a significant increase in power output. This allows the engine to handle heavy loads and difficult operating conditions.

• Direct Injection System: The engine uses a direct injection combustion system. This optimizes combustion efficiency, resulting in improved fuel economy and reduced emissions.

• Durable Construction: The engine incorporates features that improve reliability and serviceability, including oil-cooled pistons, replaceable cylinder liners, and a fully sealed and pressurized cooling system.

• Proven in Major Equipment Brands: The S4K engine powers Hyundai excavators, Cat excavators, and Mitsubishi motor graders. Parts and service information are readily available for this engine.

• Fully Rebuilt to OEM Standards: We completely disassemble each engine and rebuild it to original Mitsubishi factory specifications. We recondition the cylinder head and inspect the cylinder block. We service the fuel injection pump and turbocharger. All critical wear parts are replaced with new components.

• Tested Before Shipping: Every unit is hot‑run tested to verify compression, oil pressure, cooling performance, and injection timing. A test report is available upon request.

• Ready to Install: This used engine for sale ships as a complete long‑block assembly with pre‑installed filters and fluids. Necessary mounting hardware and wiring harness are included for straightforward installation.

Why Buy From Us

• 12‑Month Warranty: Coverage for parts and workmanship on all rebuild components

• Worldwide Shipping: Secure export packaging and freight coordination available

• Compatibility Support: Free fitment check with your machine model and serial number

• Core Exchange Available: Ask about returning your old engine core to save on cost

• Documentation Provided: Full rebuild reports and test results upon request