Product Details

Product Overview

This Hou Duo QDJ277D starter motor is a high-quality replacement part specifically engineered for the Cummins 6BT5.9 diesel engine. Designed for heavy-duty B2B applications, this 24V, 12-tooth, 7.5kW starter motor ensures reliable engine cranking performance in demanding conditions. We offer global shipping with fast delivery to major industrial centers and ports across North America, Europe, Asia-Pacific, the Middle East, and Africa.

Key Features & Benefits

• High Power Output: 7.5kW (10HP) ensures reliable cold starts and consistent cranking torque for the 6BT5.9 engine.
• Durable Construction: Built with heavy-duty components to withstand high vibration and extreme temperatures common in excavator and industrial applications.
• 24V Electrical System: Designed for heavy machinery and commercial vehicle electrical systems requiring 24V operation.
• 12-Tooth Pinion Gear: Precision-machined for perfect engagement with the flywheel ring gear, reducing wear and ensuring smooth starts.
• 6-Month Warranty: Comes with a standard 6-month warranty against manufacturing defects, providing peace of mind for bulk purchases.

Technical Specifications

OEM Cross-Reference

This QDJ277D starter motor replaces or corresponds to the following OEM part numbers:

• Cummins OEM: 3920226, 3920227
• Delco Remy: 37MT series compatible
• Other Equivalent: 8-98023-526-0 (aftermarket cross)

Note: Always verify your existing starter motor’s mounting pattern and electrical connections before purchase.

Compatibility

Engine Models:

• Cummins 6BT5.9 (naturally aspirated and turbocharged variants)
• Cummins 6BTA5.9

Vehicle Applications:

• Dongfeng trucks and construction equipment
• Excavators (various Chinese OEMs using 6BT5.9)
• Industrial generators and marine applications
• Agricultural tractors

Note: Primarily designed for 24V electrical systems found in heavy equipment. Not suitable for 12V passenger vehicles.

Global Supply & Distribution

We are an experienced exporter of diesel engine parts and starter motors. Our distribution network covers:

• North America: USA, Canada, Mexico (fast shipping to Houston, Los Angeles, Chicago ports)
• Europe: Germany, Netherlands, UK, France, Poland (Rotterdam, Hamburg, Antwerp hubs)
• Asia-Pacific: Australia, Indonesia, Thailand, Vietnam
• Middle East: UAE, Saudi Arabia, Kuwait (Dubai Jebel Ali port)
• Africa: Nigeria, South Africa, Kenya
• South America: Brazil, Chile, Peru

We offer DDP (Delivered Duty Paid), FOB, CIF, and EXW terms. Minimum order quantities (MOQ) are flexible for B2B clients. We handle all export documentation and customs clearance for smooth international trade.

Quality Assurance

• Manufactured under ISO 9001 quality management systems
• Each unit undergoes 100% bench testing for voltage, current draw, and torque output
• Pinion gear engagement tested for smooth operation
• Housing and mounting points inspected for dimensional accuracy
• 6-month warranty against manufacturing defects (covers replacement or repair)

FAQ

Q1: Will this QDJ277D starter motor fit my Cummins 6BT5.9 engine used in an excavator?
A: Yes, this starter motor is specifically designed for the 6BT5.9 engine family. However, always check the mounting bolt pattern (typically SAE J542 type) and pinion offset. The 12-tooth pinion is standard for this engine. Measure the distance from the mounting flange to the pinion tip to ensure correct engagement with your flywheel.

Q2: What is the installation procedure for this 24V starter motor?
A: Installation involves: (1) Disconnect the battery negative terminal. (2) Remove the old starter bolts (usually 2-3 bolts). (3) Disconnect the main power cable (B+ terminal) and signal wire (S terminal). (4) Clean the mounting surface. (5) Install the new starter with bolts torqued to manufacturer specs (typically 40-50 Nm). (6) Reconnect wires: main power to B+, signal wire to S. (7) Reconnect battery and test. Ensure all connections are tight to prevent voltage drop.

Q3: How do I maintain this starter motor for long service life?
A: For heavy-duty use: (1) Keep electrical connections clean and tight to avoid overheating. (2) Ensure the engine’s ground strap is in good condition. (3) Avoid prolonged cranking (over 30 seconds) to prevent overheating. (4) Periodically check mounting bolts for tightness. (5) If the engine fails to start, troubleshoot the battery, alternator, and wiring before assuming starter failure. The brush set can be replaced by a qualified technician after extended use (typically 50,000+ starts).

Our advantages

1.An authorized wholesaler of Isuzu genuine parts, Hino genuine parts, Mitsubishi genuine parts and Mahle parts.

2. We are not only supply genuine parts, but also high quality OEM parts, which are made in China or made in Japan.

3. More than 10 years of experience in machinery parts, professional supply of diesel engine parts.

4. Fast delivery, the fastest can be shipped in one day ,more than 500,000 of different types parts in stock.

5. Scientific ERP system, easy and fast to locate the parts that customer needs.

6. Professional technician checks the parts before delivery, to make sure the parts are correct, usable and defect-free.

Exhibition

Packing&Shipping

1.  Our shipment is by air/sea/express (DHL/FEDEX/TNT/UPS/EMS).

2.  Once we get confirmation of payment, we will ship products in 2 days.

3.  Our packaging is standard export wooden box or others as your requirement.

4. We’ll check and test the products before shipping , and givethe pictures to our customers to confirm.

FAQ

Q1. What is your company major products?

A: Our main products are Liner kit, Piston, Rings, Liner, Gasket kit, Bearing, Injection pump, Nozzle, Water pump, Oil pump,Crankshaft, Turbocharger,Filter, etc.

Q2.What is the MOQ?

A: Normally we can supply any quantity if we have in stock.

Q3. What is your payment term ?

A: We accept Western Union, T/T, Paypal.

Q4. What is the packing ?

A: Carton or wooden case , If you want to put your logo on the packing , We will do it after get your authorization letter.

Q5. When can you deliver products after payment ?

A: By Express ,usually might take 3-4 days ;By Air , Usually take 7-9 days ; By Sea ,usually take 1-2 months .

Q6. What can you do to complete order perfectly ?

A: In the beginning , We will communicate with clients in details to understand what they need .

Before packing , We will check the products and send photos to clients .After confirmation ,

We will packing products well to avoid damage . Once we get tracking number ,

We will send it to customer and keep contact in with clients .