Product Overview

This is a premium replacement cooling fan blade engineered specifically for the Cummins 4BT3.9 diesel engine. Designed for durability and optimal airflow, this part is an essential component for maintaining proper engine operating temperature. We supply this genuine-quality part to B2B clients worldwide, with extensive experience serving major markets across North America, Europe, the Asia-Pacific region, and the Middle East.

Key Features & Benefits

• Precision Engineering: Manufactured to exact OEM specifications for a perfect fit and balanced operation, reducing vibration and wear on the water pump bearing.
• Robust Construction: Made from high-grade, reinforced polymer or steel (as per OEM design) to withstand high RPMs, thermal stress, and harsh operating environments.
• Optimal Cooling Performance: Blade pitch and design are optimized to deliver maximum airflow for efficient heat dissipation from the radiator, preventing engine overheating.
• Direct OEM Replacement: Eliminates compatibility concerns, offering a reliable and cost-effective alternative to purchasing from the original dealer network.
• Extended Service Life: High-quality materials and strict manufacturing controls ensure long-term reliability, reducing downtime and maintenance costs for your fleet or equipment.

Technical Specifications

OEM Cross-Reference

This fan blade serves as a direct replacement for the following Cummins part numbers. Always verify the specific part number from your original component or engine data plate.

• Cummins Part Number: 3947584 (Common Reference)
• Alternative/Related Numbers: 3947583, 3416585

Note: Part numbers can vary based on specific engine configuration and fan clutch type. Contact our technical team for verification.

Compatibility

This fan blade is designed for the Cummins 4BT3.9 and 4BTA3.9 turbocharged diesel engines. These engines are widely used in a variety of applications, including:

• Vehicles: Medium-duty trucks (e.g., International 3000 series, Ford F-650/F-750), school buses, utility vehicles.
• Industrial & Construction Equipment: Generators, pumps, compressors, agricultural machinery, excavators, and skid steers.
• Marine Applications: Auxiliary power units and small marine propulsion systems.

Global Supply & Distribution

We are a leading B2B supplier of heavy-duty engine components with a robust global logistics network. Our capabilities include:

• Worldwide Shipping: Reliable export to all major continents via air and sea freight.
• Key Markets Served: We regularly supply distributors, workshops, and OEMs in North America (USA, Canada, Mexico), the European Union, the United Kingdom, Australia, Southeast Asia, the Middle East, and South America.
• Efficient Logistics: Fast container and LCL shipments to major ports like Los Angeles, Rotterdam, Singapore, Dubai, and Sydney. We also arrange inland delivery to industrial hubs.
• Trade Compliance: All shipments are handled with complete commercial documentation (Packing List, Commercial Invoice, Certificate of Origin) compliant with international trade regulations.

Quality Assurance

We partner with ISO-certified manufacturers to ensure every part meets the highest standards.

• Manufacturing Standards: Components are produced under strict quality control systems (ISO 9001) using certified materials.
• Testing: Fan blades undergo rotational balance testing and dimensional inspection to guarantee performance and fitment.
• Warranty: All parts are backed by a standard 12-month warranty against manufacturing defects, providing peace of mind for our B2B partners.

FAQ

Q1: How do I confirm this fan blade fits my specific Cummins 4BT3.9 engine?
A1: The most reliable method is to cross-reference the part number stamped on your original fan blade or listed in your engine’s service manual with our provided OEM numbers. You can also provide us with your engine’s serial number (ESN) or the model of the equipment for our technical team to verify.

Q2: What is the recommended inspection procedure for a cooling fan blade?
A2: Regularly inspect for cracks, especially at the blade roots and hub, significant bending or deformation, and excessive wear on the mounting holes. A damaged or unbalanced fan can cause catastrophic failure and damage the radiator or water pump. Always replace the fan blade if any damage is suspected.

Q3: Do you offer combined shipments for large B2B orders of various engine parts?
A3: Yes, we specialize in consolidating orders. You can combine this fan blade with other 4BT3.9 parts (like gasket kits, injectors, or water pumps) into a single container shipment, significantly reducing per-unit shipping costs and simplifying logistics for your inventory.

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 .