Product Categories
- Block & Internal Parts 445
- Camshaft 165
- Camshaft Components 35
- Crankshaft 192
- Crankshaft Components 0
- Connecting Rod 53
- Rods & Main Bearings 0
- Push Rod 0
- Rocker Arm 0
- Thrust Plate 0
- Cylinder Components 87
- Diesel Engine 221
- Fuel Injectors & Nozzles 536
- Turbocharger & Kit 704
- Rebuild Kits 0
- Filters 0
- Fuel System 659
- Common Rail Assembly 48
- Fuel Line 32
- Fuel Pump 191
- Injection Pump 320
- Injection Pump Repair Kit 18
- Pump Head & Rotor 50
- Engine Auxiliary Components 0
- Exhaust Manifolds 0
- Manifold 0
- Manifold Kit 0
- Muffler 0
- Lubrication & Cooling 0
- Oil Cooler 0
- Oil Pan 0
- Oil Pump 0
- Thermostat 0
- Water Pump 0
- Tool Kits 1
- Other Engine Parts 0
Engine Manufacturer
- For Belaz 1
- For CUMMINS 221
- For SANY 1
- For XCMG 8
Engine Model
Condition
- New 220
- Remanufactured 1
Featured Products
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Bare Cylinder Block 3971383 for Cummins Engine QSC QSC8.3
$2,417.95
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Complete Cylinder Block 3971383 for Cummins Engine QSC QSC8.3
$4,079.95
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4BTdiesel Bare Cylinder Block for Komatsu Engine 4D98E
$1,656.00
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Cylinder Block 4310384 for Cummins Engine QSK23 K23
$19,139.90
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Cylinder Block 7N-6550 for Caterpillar CAT Engine 3306 Loader 966C 966D 966F 970F 972G
$3,068.50
Cummins 4BT3.9-C80 Diesel Engine
Get the Cummins 4BT3.9-C80 engine and reliable Cummins parts for your construction equipment — built for power and performance.
Engine Assembly for Heavy Equipment
The engine assembly is the core of any Cummins diesel engine, with critical components such as the crankshaft and cylinder head often regarded as the “heart” of the engine. Built from high-strength, wear-resistant alloys, these assemblies are engineered to endure extreme working environments—whether it’s the heavy loads of construction machinery, the long hauls of trucks, the continuous operation of generators, or the demanding conditions of marine vessels.
Overheating, dust, and constant vibration can accelerate engine wear, making the quality of your replacement parts crucial. That’s why 4BTDiesel provides durable, high-performance Cummins engine assemblies and components designed to deliver reliability and efficiency across multiple applications.
4BTDiesel: Your Trusted Engine Assembly Replacement Supplier
As a trusted supplier, 4BTDiesel offers a full range of Cummins-compatible engine assemblies and spare parts at competitive prices. Whether you operate excavators, dozers, trucks, generators, or marine engines, you’ll find the right assembly and components to keep your machines running at peak performance.
Maintenance Tips for Engine Assemblies
- Regularly inspect engine assemblies to identify early signs of wear.
- Keep the engine clean to ensure efficient cooling and heat dissipation.
- Change engine oil, oil filters, and air filters on schedule.
- Monitor coolant levels and concentration to prevent overheating.
- Replace worn assemblies promptly to avoid costly downtime.
By choosing 4BTDiesel for your Cummins engine assemblies, you ensure long-lasting performance, lower maintenance costs, and reliable power—no matter the application.