Used Cummins 6CT Diesel Engine for Sale | 8.3L 6-Cylinder Turbo Rebuilt for Excavators & Loaders

Used Cummins 6CT 8.3 Turbo Diesel | 8.3L Rebuilt for Construction & Agricultural Equipment

Parameter	Specification
Engine Model	Cummins 6CT / 6CTA8.3
Type	Inline 6 Cylinder, 4‑Stroke, Water‑Cooled Diesel
Displacement	8.3 L (504.5 in³)
Bore × Stroke	114 mm × 135 mm (4.49 in × 5.32 in)
Compression Ratio	15.5:1 to 17.3:1 (depending on variant)
Max Power	164‑270 HP (122‑201 kW), depending on configuration
Max Torque	672‑1165 N·m (495‑860 lb‑ft), depending on variant
Aspiration	Turbocharged (6CT) or Turbocharged / Aftercooled (6CTA)
Fuel System	Bosch Mechanical Inline Injection Pump
Firing Order	1‑5‑3‑6‑2‑4
Rotation (Flywheel End)	Counterclockwise
Cooling System	Water‑Cooled, Single Loop Keel Cooling or Heat Exchanger
Number of Valves	2 valves per cylinder

Category Cummins engine

Are you looking for a reliable, mechanically controlled used diesel engine for your mid-size excavator or wheel loader? This fully rebuilt Cummins 6CT diesel engine delivers proven performance for demanding equipment applications. With 8.3L displacement and a turbocharged inline 6-cylinder design, this used engine for sale is a trusted power solution for excavators, wheel loaders, and industrial machinery. The 6CT belongs to Cummins’ C series family, which has been a workhorse engine in construction and industrial applications since the mid-1980s. Its simple mechanical design, wet cylinder sleeves, and durable forged internal components make it easy to rebuild and keep in service for years. 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: Direct fit for Hitachi EX300 and EX330; Komatsu PC360‑7; Cummins R305‑7; LiuGong excavators
Wheel Loaders: Suitable for LiuGong wheel loaders and various mid-size loaders
Industrial Machinery: Compressors, pumps, generator sets, concrete mixers
Agricultural Equipment: Farm tractors, harvesters, and other agricultural machinery
Marine: Commercial vessels, auxiliary engines, and fire pumps with IMO compliance
Vehicles: Dump trucks, city buses, fire trucks, and heavy‑duty commercial vehicles

Key Features

Proven C Series Reliability: The Cummins 6CT has been in production since 1985. It uses a robust cast iron block and cylinder head. The engine is built for continuous heavy‑duty operation in demanding construction and industrial environments.
Wet Sleeve Technology: This engine uses replaceable wet cylinder liners. Mechanics can perform in‑frame rebuilds without pulling the entire block. This cuts downtime and reduces repair costs significantly for equipment owners.
Simple Mechanical Fuel System: The 6CT uses a Bosch mechanical inline fuel injection pump. There are no complex electronic controls that can fail. This makes the engine easier to maintain and repair, especially in remote job sites. It also handles a wide range of fuel quality, making it suitable for global job sites.
High Low-End Torque: The turbocharged design delivers strong torque at low RPMs. This provides the pulling and digging power needed for excavators, wheel loaders, and other earthmoving equipment under heavy load.
Holset Turbocharger: The engine uses a Holset turbocharger with an integral wastegate valve. This provides excellent transient response and maintains power at higher altitudes. The turbocharger is optimized for construction and industrial applications.
Durable Internal Components: The engine features a forged steel crankshaft and high‑strength connecting rods. These components are designed to withstand heavy loads and long operating hours. Many 6CT engines run for 15,000‑20,000 hours with good maintenance.
Multiple Configurations Available: The 6CT is available in naturally aspirated, turbocharged, and turbocharged/aftercooled versions. Power outputs range from 164 HP up to 270 HP. This gives you flexibility depending on your equipment’s power requirements.
Fully Rebuilt to OEM Standards: We completely disassemble each engine and rebuild it to original Cummins factory specifications. We recondition the cylinder head and inspect the cylinder block. We service the fuel injection pump and turbocharger. All critical wear parts, including pistons, rings, bearings, and gaskets, are replaced with new components.
Tested Before Shipping: Every unit is hot‑run tested on a dyno 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.

Power Rating Variants

Engine Model	Rated Power	Rated Speed	Max Torque	Torque Speed	Emission
6CT8.3-C190-II	190 HP (142 kW)	2,200 RPM	860 N·m	1,400 RPM	Tier 2
6CTA8.3-C215-II	215 HP (160 kW)	2,200 RPM	908 N·m	1,500 RPM	Tier 2
6CT8.3-C212	212 HP	2,200 RPM	—	—	—
6CTA8.3-C230-II	230 HP (172 kW)	2,200 RPM	1,000 N·m	1,500 RPM	Tier 2
6CTA8.3-C260-II	260 HP (194 kW)	2,200 RPM	1,150 N·m	1,300 RPM	Tier 2
6CTA8.3-C145	145 HP (108 kW)	1,900 RPM	672 N·m	1,300 RPM	—
6CTA8.3-C215	215 HP (160 kW)	2,000 RPM	940 N·m	1,400 RPM	—
6CTAA8.3-C240-II	240 HP (179 kW)	2,000 RPM	1,040 N·m	1,300 RPM	Tier 2
6CTAA8.3-C260-II	260 HP (194 kW)	2,000 RPM	1,120 N·m	1,400 RPM	Tier 2

Note that power outputs vary by equipment type and application.

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 dyno test results upon request