6BT5.9 6-cylinder engine, 5.9L with turbocharger, suitable for excavators and industrial applications
The 6BT5.9 diesel engine is a 5.9L inline six-cylinder water-cooled turbocharged diesel engine with a mechanical direct injection fuel system. It belongs to the mature B-series power platform and features simple structure, high reliability, convenient maintenance, and good fuel economy. Suitable for repair, refurbishment, power upgrades, and replacement, it is one of the most widely used medium-sized diesel engines.
6BT5.9 Engine Specifications
| State |
Brand New |
| Product Name |
6BT5.9 Diesel Engine |
| Engine Type |
Inline Six-Cylinder Diesel Engine |
| Displacement |
5.9L |
| Bore × Stroke |
102 × 120mm |
| Intake Method |
Turbocharged |
| Fuel System |
Direct Injection |
| Starting Method |
Electric Start |
| Weight |
565KG |
| Dimensions |
109cm*81cm*120cm |
| Minimum Order Quantity |
1 piece |
| Payment Methods |
Western Union, T/T |
| Shipping Methods |
UPS / DHL / EMS / TNT / FedEx |
Applications: Excavators, loaders, construction machinery, industrial equipment
Features and Advantages
Inline six-cylinder structure, smooth operation and excellent vibration control.
Turbocharged intake improves power response and combustion efficiency.
Mature structure, widely available parts, and controllable maintenance costs.
Supports long-term continuous operation, suitable for industrial and engineering applications.

6BT5.9 Diesel Engine Assembly Warehouse Factory Photos, Excavator Suitable, In Stock Price
Guangzhou Minshun Machinery Equipment Co., Ltd.
We specialize in the sales and service of diesel engine assemblies and construction machinery parts. Our product line covers engine assemblies, filtration systems, electronic control components, hardware accessories, wiring harnesses, and electrical accessories. Our service area includes Canada, the United States, the United Kingdom, Mexico, the Netherlands, Kazakhstan, Mongolia, Russia, Australia, Malaysia, Turkey, Indonesia, Singapore, Thailand, South America, South Africa, and other countries and regions.
Our Product Range
| Engine Rebuild Kit |
Turbochargers |
Engine Diesel Pumps |
Engine Controllers (ECU) |
| Cylinder Blocks |
Cylinder Heads |
Water Pumps |
Injectors |
| Starter Motors |
Filters |
Other Engine Accessories |
Excavator Hydraulic Pumps |
| Swivel Components |
Distributor Valves |
Travel Motor Assemblies |
Chassis Components and Other Accessories |



Frequently Asked Questions
Q1: What is your main products?
A1: We are specialized in the excavator engine spare parts, for example Main cylinder block, cylinder head, crankshaft, Engine assembly, piston, cylinder liner, piston ring, camshaft, connecting rod, oil pump, water pump, valve series products, movement, etc. almost all parts of the entire engine.
Q2: If I only know the excavator model, but can not offer parts No., what should I do?
A2: If possible, you can send us pictures of old products, name plate or the size for reference.
Q3: Can you accept sample order?
A3: Yes sure. We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and the courier cost.
Q4: Do you test all your goods before delivery?
A4: Yes, we have 100% test before delivery.
Q5: How can I do if there is something wrong with the items?
A5: Our products have been professionally tested and the quality is very stable. If you really found something wrong, please contacts. We have a professional after-sales team to help you solve the problem.
Q6: Why does the 6BT5.9 engine suddenly drop speed or lose power under load?
A6: These issues can be caused by:
Fuel system blockage or insufficient fuel supply: A clogged diesel filter or insufficient fuel pump pressure leads to reduced fuel supply.
Intake system leaks: Damaged intercooler piping or loose clamps cause boost pressure loss.
Fuel injection pump or governor wear: Wear on the mechanical injection pump plunger results in insufficient fuel supply under high loads, leading to reduced power.