DCEC Cummins 6LTAA8.9-G and 6LTAA9.5-G engines are 6-cylinder diesel engines widely used for generator set applications. This parts list includes common maintenance parts, overhaul parts, fuel system parts, cooling system parts, lubrication system parts, air intake parts, electrical parts, and other frequently used engine components. Quantities are listed based on one complete engine set.
Common Maintenance Parts
| Part Name |
Part Number |
Qty Per Engine |
| Oil Filter |
LF9009 |
1 |
| Fuel Filter |
FF5706 |
1 |
| Fuel Filter |
3930942 |
1 |
| Water Filter |
WF2075 |
1 |
| Air Filter Element |
AF928M |
1 |
| Fuel Filter Head Adapter |
3925955 |
1 |
| Sealing Washer |
3918192 |
As Required |
Engine Block and Main Components
| Part Name |
Part Number |
Qty Per Engine |
| Cylinder Block |
3976831 |
1 |
| Cylinder Head |
4934058 |
1 |
| Crankshaft |
3971399 |
1 |
| Camshaft |
3415350 |
1 |
| Connecting Rod |
3979744 |
6 |
| Piston Skirt |
3966721 |
6 |
| Piston Top |
4941395 |
6 |
| Piston Ring Set |
3802421 |
6 |
| Main Bearing Set |
3802070 |
1 Set |
| Connecting Rod Bearing Set |
3966244 |
1 Set |
| Thrust Bearing Set |
3906230 |
1 Set |
| Retaining Ring |
3920692 |
12 |
Gasket and Sealing Parts
| Part Name |
Part Number |
Qty Per Engine |
| Cylinder Head Gasket |
3967059 |
1 |
| Upper Engine Gasket Kit |
4089478 |
1 Set |
| Lower Engine Gasket Kit |
4089479 |
1 Set |
| Oil Pan Gasket |
3938162 |
1 |
| Valve Cover Gasket |
3935449 |
1 |
| Front Crankshaft Oil Seal |
3904353 |
1 |
| Rear Crankshaft Oil Seal |
3909410 |
1 |
| Rectangle Seal |
3906694 |
1 |
| Rectangle Seal |
3906695 |
1 |
Fuel System Parts
| Part Name |
Part Number |
Qty Per Engine |
| Fuel Injection Pump |
3960919 |
1 |
| Fuel Transfer Pump |
3966154 |
1 |
| Fuel Injector |
3932254 |
6 |
| Injector Sleeve |
3969557 |
6 |
| Fuel Drain Tube |
3925749 |
1 |
| Fuel Filter |
3930942 |
1 |
| Fuel Shutoff Solenoid |
3930234 |
1 |
| Fuel Pump Governor |
ES9178 |
1 |
| Electronic Speed Control Unit |
ESD5500E |
1 |
Lubrication System Parts
| Part Name |
Part Number |
Qty Per Engine |
| Oil Pump |
4939585 |
1 |
| Oil Cooler Core |
3966365 |
1 |
| Oil Cooler Cover |
3966364 |
1 |
| Oil Pan |
3974295 |
1 |
| Oil Suction Tube |
3974296 |
1 |
| Oil Pressure Sensor |
3967251 |
1 |
| Oil Level Gauge |
3975668 |
1 |
Cooling System Parts
| Part Name |
Part Number |
Qty Per Engine |
| Water Pump |
3966841 |
1 |
| Thermostat |
3967195 |
1 |
| Thermostat Housing |
3967197 |
1 |
| Fan Support |
3415603 |
1 |
| Fan Pulley |
3926855 |
1 |
| Fan Drive |
FA9310 |
1 |
| Water Temperature Sensor |
3967250 |
1 |
Air Intake and Exhaust System Parts
| Part Name |
Part Number |
Qty Per Engine |
| Turbocharger |
3960454 |
1 |
| Exhaust Manifold |
3979211 |
1 |
| Intake Manifold |
3979212 |
1 |
| Air Intake Connection |
3966721 |
1 |
| Turbocharger Gasket |
3901356 |
1 |
| Exhaust Outlet Connection |
3910994 |
1 |
Valve Train Parts
| Part Name |
Part Number |
Qty Per Engine |
| Intake Valve |
3802355 |
6 |
| Exhaust Valve |
3802085 |
6 |
| Valve Spring |
3916691 |
12 |
| Valve Guide |
3906206 |
12 |
| Valve Tappet |
3931623 |
12 |
| Push Rod |
3941253 |
12 |
| Rocker Lever |
3964715 |
12 |
Electrical and Control Parts
| Part Name |
Part Number |
Qty Per Engine |
| Starting Motor |
3976618 |
1 |
| Alternator |
3972730 |
1 |
| Speed Sensor |
3971994 |
2 |
| Electronic Governor |
ES9178 |
1 |
| Control Unit |
ESD5500E |
1 |
| Connector |
EC1300 |
1 |
| Wiring Harness |
3977552 |
1 |
Flywheel, Pulley and Mounting Parts
| Part Name |
Part Number |
Qty Per Engine |
| Flywheel |
3966570 |
1 |
| Flywheel Housing |
3966571 |
1 |
| Vibration Damper |
3967014 |
1 |
| Crankshaft Pulley |
3943978 |
1 |
| Camshaft Gear |
3918777 |
1 |
| Gear Housing |
3971283 |
1 |
| Front Gear Cover |
3971284 |
1 |
| Engine Mounting Bracket |
3974298 |
2 |
6LTAA9.5-G Common Additional Parts
| Part Name |
Part Number |
Qty Per Engine |
| Cylinder Block |
5264662 |
1 |
| Cylinder Head |
5339590 |
1 |
| Rocker Lever |
3964715 |
12 |
| Engine Gasket |
3945917 |
1 |
| Fuel Injector |
5263308 |
6 |
| Water Pump |
5269784 |
1 |
| Turbocharger |
5265058 |
1 |
| Oil Cooler Core |
5266955 |
1 |
Recommended Overhaul Kit for 6LTAA8.9-G and 6LTAA9.5-G
Major Overhaul Parts
| Part Name |
Part Number |
Qty Per Engine |
| Piston Assembly |
4941395 |
6 |
| Piston Ring Set |
3802421 |
6 |
| Cylinder Liner |
3948095 |
6 |
| Connecting Rod Bearing Set |
3966244 |
1 Set |
| Main Bearing Set |
3802070 |
1 Set |
| Thrust Bearing Set |
3906230 |
1 Set |
| Upper Gasket Kit |
4089478 |
1 Set |
| Lower Gasket Kit |
4089479 |
1 Set |
| Intake Valve |
3802355 |
6 |
| Exhaust Valve |
3802085 |
6 |
| Valve Guide |
3906206 |
12 |
| Valve Spring |
3916691 |
12 |
Application of 6LTAA8.9-G and 6LTAA9.5-G Engine Parts
These parts are suitable for DCEC Cummins 6LTAA8.9-G and 6LTAA9.5-G generator drive engines. They are commonly used for diesel generator sets, standby power systems, industrial power units, commercial buildings, factories, mining sites, construction projects, and emergency power applications.
Important Notes Before Ordering
Confirm Engine Information
Before ordering Cummins 6LTAA8.9-G or 6LTAA9.5-G engine parts, please confirm the engine model, engine serial number, CPL number, rated power, and original part number. Some parts may vary depending on the engine configuration, production batch, fuel system, governor type, and generator set application.
Why Choose Genuine or High-Quality Replacement Parts
Using genuine or high-quality replacement parts helps maintain stable engine performance, reduce downtime, improve fuel efficiency, and extend engine service life. For generator set engines, reliable spare parts are especially important for continuous operation and emergency standby power supply.
Contact Us for DCEC Cummins 6LTAA Engine Parts
We supply DCEC Cummins 6LTAA8.9-G and 6LTAA9.5-G engine spare parts, maintenance parts, overhaul kits, fuel system parts, cooling system parts, lubrication system parts, turbocharger parts, electrical components, and generator set engine parts. Please send us your engine serial number or required part number for accurate quotation and fast delivery.
Dongfeng Cummins Engine Co., Ltd. (hereinafter referred to as "Dongfeng Cummins" or the "Company") is located in the High-tech Industrial Development Zone of Xiangyang City, Hubei Province. It is a 50:50 joint venture established by Dongfeng Motor Co., Ltd. Modern medium and heavy engine manufacturing company. In 1986, Dongfeng Motor Corporation and Cummins Corporation of the United States signed a B series engine production license agreement. In June 1996, Dongfeng Cummins Engine Co., Ltd. was established with a registered capital of more than 100 million US dollars, an area of 270,000 square meters, and more than 2,200 employees.
The company's products include B, C, D, L, Z series platform Cummins engines, which can meet the national V, national VI and non-road national IV emission standards for vehicles. The engine displacement is 3.9L, 4.5L, 5.9L, 6.7L, 8.3L, 8.9L, 9.5L, 13L, power coverage range is 80-680 horsepower, widely used in light, medium and heavy trucks, medium and high-grade intercity buses, large and medium-sized buses, construction machinery, marine main and auxiliary engines, generator sets, etc. The products are widely praised by users at home and abroad for their advanced economy, power, reliability, durability and environmental safety. Cummins is a power solution provider, and Dongfeng is a super-large Chinese auto company. Dongfeng Cummins will rely on the strong support of Cummins' global production system in the fields of product development, manufacturing, quality and management to continuously improve the competitiveness of enterprises and products, and provide customers with high-quality engines.
Through integration and optimization, Dongfeng Cummins has reached an annual production capacity of 230,000 engines, and through rolling technology introduction and self-development strategy, it has gradually achieved simultaneous development with the
European and American markets in product development, thereby leaping to improve China's medium and heavy engines. technical level. The company has developed a new generation of 13-liter fully electronically controlled heavy-duty truck engines with all independent intellectual property rights, with a power range of 430-600 horsepower.
"Driving the world forward and realizing the most beautiful life" is the mission of the company. We have the courage to assume social responsibilities and be a socially responsible corporate citizen. The company produces products that meet the national emission standards in strict accordance with the requirements of production consistency, casts green environmental protection into the brand, and is committed to creating a green and environmentally friendly clean power.