Starter Motor 2.8kW 13T 5286774 5336432 for Cummins 6BT3.9 6BCT5.9 Engine Parts

Product Details

Product Overview

This high-performance starter motor is specifically designed for Cummins 6BT3.9 and 6BCT5.9 diesel engines, offering reliable 2.8kW power output with a 13-tooth drive gear. Engineered as a direct replacement for OEM part numbers 5286774 and 5336432, this unit delivers the cranking torque required for heavy-duty applications in excavators, trucks, forklifts, bulldozers, buses, and loaders.

Manufactured to OEM size specifications, this starter motor ensures seamless installation and compatibility with original mounting configurations. It is an ideal solution for equipment owners seeking a cost-effective alternative to genuine Cummins parts without compromising on performance or fitment accuracy.

Key Features & Benefits

• OEM Cross-Reference Compatibility: Direct replacement for Cummins part numbers 5286774 and 5336432, ensuring accurate fitment for 6BT3.9 and 6BCT5.9 engine platforms.
• High Cranking Power: 2.8kW output provides sufficient torque for reliable cold starts in demanding conditions, from construction sites to highway operations.
• 13-Tooth Drive Gear: Precision-engineered gear engagement ensures smooth meshing with flywheel ring gears, reducing wear and extending service life.
• Durable Construction: Built with heavy-duty components to withstand vibration, heat, and continuous operation in off-road and industrial environments.
• OEM Size & Fitment: Manufactured to exact OEM dimensions for bolt-on installation without modifications, saving labor time and reducing downtime.
• Cost-Effective Solution: Provides reliable performance at a competitive price point, making it an economical choice for fleet maintenance and equipment repair.

Technical Specifications

OEM Cross-Reference

This starter motor is a direct replacement for the following OEM part numbers:

• Cummins OEM: 5286774, 5336432
• Compatible with: 6BT3.9 and 6BCT5.9 engine series starter applications

Note: Cross-reference information is based on manufacturer data. Verify compatibility with your specific engine serial number before ordering.

Compatibility

This starter motor is commonly used for the following applications:

• Engine Models: Cummins 6BT3.9, 6BCT5.9
• Vehicle/Equipment Applications: Excavators, trucks, forklifts, bulldozers, buses, loaders, and other heavy machinery utilizing these engine platforms

Fitment is inferred based on OEM specifications. Always confirm with your equipment manufacturer’s parts catalog.

Global Supply & Distribution

We maintain a robust global supply chain to serve international B2B buyers across all major markets. Our distribution network ensures fast delivery to key industrial centers worldwide, including:

• North America: Los Angeles, Houston, Chicago, Toronto, Vancouver
• Europe: Rotterdam, Hamburg, Antwerp, Felixstowe, Gdansk
• Asia-Pacific: Singapore, Shanghai, Tokyo, Sydney, Dubai
• Middle East & Africa: Jebel Ali, Dammam, Durban, Lagos
• Latin America: Santos, Manzanillo, Buenos Aires, Callao

With export experience spanning over 30 countries, we offer flexible shipping options including sea freight (FOB, CIF), air freight, and express courier services. All shipments comply with international trade regulations and are properly documented for customs clearance.

Quality Assurance

• Manufacturing Standards: Produced in ISO-certified facilities in Guangdong, China, following strict quality control processes.
• Testing Procedures: Each unit undergoes outgoing inspection with video documentation available upon request. Machinery test reports are provided to verify performance parameters.
• Warranty: 6-month warranty against manufacturing defects, covering material and workmanship issues under normal operating conditions.
• Quality Advantage: Designed to match original genuine engine parts in performance and durability.

FAQ

Q1: Will this starter motor fit my Cummins 6BT3.9 engine in a 2005 model excavator?
This starter motor is designed as a direct replacement for Cummins 6BT3.9 engines using OEM part numbers 5286774 or 5336432. While we cannot guarantee fitment for specific model years due to variations in engine configurations, the 13-tooth drive gear and 2.8kW power output match standard specifications for this engine series. We recommend comparing the mounting pattern and electrical connections with your existing unit before purchase.

Q2: What is the recommended installation procedure for this starter motor?
Installation should be performed by a qualified technician following standard diesel engine service procedures. Key steps include: disconnecting the battery, removing electrical connections and mounting bolts from the old starter, cleaning the mounting surface, installing the new unit with proper torque specifications (typically 40-50 Nm for mounting bolts), and reconnecting battery cables (positive to solenoid terminal, negative to ground). Always refer to your equipment’s service manual for specific torque values and wiring diagrams.

Q3: How can I extend the service life of this starter motor?
To maximize longevity, ensure the engine’s electrical system maintains proper voltage (12V for this model) and that battery cables are clean and tight. Avoid prolonged cranking cycles (limit to 15-20 seconds with 2-minute cool-down intervals). Regular inspection of the drive gear and ring gear for wear can prevent premature failure. In dusty environments, keep the starter area clean to prevent debris from affecting the solenoid or brush assembly. If the starter shows signs of sluggish cranking, have it tested before failure occurs.