020003889 7700077834 BIMA061121 Fan Clutch for Claas Axion 810, 810 HEXASHIFT, 850, 850 HEXASHIFT - Heavy-Duty Agricultural Tractor Cooling Component
Product Details
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- All products undergo quality inspection before entering the market;
- All product packaging and MOQ will try our best to meet the actual requirements and needs of customers;
- All kinds of express delivery as you choose, whatever by sea, Fed Express, DHL, TNT, EMS or others.
Specifications:
| Item Condition | Aftermarket Part |
| Part Type | UNIT |
| Purpose | Replaceable |
| Rotation | CW |
| Project | Fan Clutch Assembly |
| Material | Steel |
| Fan Clutch Type | Heat sink/Cooling |
| Brief | Fan Clutch Case |
Replaces these part numbers:
| OEM Part Numbers | 020003889, 7700077834 |
| Compatible Models | Valtra-Valmet: 4386279M3, 4386279M2, 4386279M1, 4386280M91, Serie S4, S 274, S 294, S 324, S 354, S 374, S 394 Massey Ferguson: 4386279M3, 4386279M2, 4386279M1, 4386280M91, Serie 8700/S, 8727, 8730, 8732, 8735, 8737, 8740/S |
With Senlong-MOTOR alternators, you’ll get …
- Superior Quality Every Time – Our aftermarket alternators deliver performance that’s equivalent to the original.
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- Engineer-Tested Excellence – Our alternators go through a rigorous testing program to ensure optimal performance. Most alternators are supplied with their final test results and performance curve.
Reasons to choose Senlong-MOTOR for your next alternator:
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The Senlong-MOTOR Advantage – 1-Year Warranty
Senlong-MOTOR delivers exceptional value for products that we stand behind with our total-confidence 1-year warranty. Yes, you have a full year to make sure your alternator meets your expectations.
100% Brand New Aftermarket Part From Senlong-motor
Mode of transport ...
within 3 days after received the payment , by air or by express or by sea on the basis of the
quantity and emergency circumstances.
- By Couriers – DHL, UPS, FEDEX, TNT are the main courier companies we are cooperated,
- By Air – Delivery from the Guangzhou air port to customer's destination city air port.
- By Sea – Delivery from the Huangpu port




Introducing the high-performance fan clutch specifically engineered for Claas Axion 810, Axion 810 HEXASHIFT, Axion 850, and Axion 850 HEXASHIFT agricultural tractors. This premium cooling component is designed to match the original equipment standards, featuring two core catalog numbers: 020003889 and 7700077834. Whether you’re replacing a worn part or conducting preventive maintenance, this fan clutch ensures reliable engine temperature regulation, optimal power efficiency, and long-lasting durability for your Claas machinery.
- Axion 810
- Axion 810 HEXASHIFT
- Axion 850
- Axion 850 HEXASHIFT
- Primary Part Number: 020003889
- Alternative Part Number: 7700077834
Note: This fan clutch is fully compatible with the listed Claas models and replaces the original parts with the above catalog numbers. Please confirm your tractor’s model and part number before purchase for a perfect fit.
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Precision Engineering for Claas Machinery
Tailored to the exact specifications of Axion 810/850 series tractors, ensuring seamless installation and consistent performance with the original engine system.
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Superior Cooling Efficiency
Advanced clutch mechanism adjusts fan speed based on engine temperature, preventing overheating during heavy-duty agricultural operations (e.g., plowing, harvesting, hauling) and optimizing fuel consumption.
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Durable Construction
Crafted from high-quality metal alloys and heat-resistant materials, capable of withstanding extreme working conditions (dust, vibration, temperature fluctuations) for extended service life.
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Direct Replacement & Easy Installation
Matches the dimensions and mounting points of the original part (020003889 / 7700077834), no modifications required—saves time and labor costs for maintenance teams.
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Reliable Performance Guarantee
Undergoes strict quality control tests to meet OEM standards, ensuring stable operation, reduced downtime, and peace of mind for farmers and agricultural businesses.
- Perfect Fit for Claas Axion Series: Engineered exclusively for your tractor model, eliminating compatibility risks.
- Dual Catalog Number Coverage: Covers 020003889 and 7700077834, meeting multiple replacement needs.
- Heavy-Duty Reliability: Built to withstand the rigors of agricultural work, reducing frequent replacements.
- Cost-Effective Solution: Premium quality at a competitive price, offering better value than OEM parts without compromising performance.
- Ensure the engine is cool and disconnected from power before installation.
- Remove the old fan clutch by loosening mounting bolts (follow Claas service manual guidelines).
- Clean the mounting surface to remove debris and corrosion.
- Install the new fan clutch and tighten bolts to the recommended torque.
- Check for proper fan rotation and no abnormal noise after installation.
- Regularly inspect the clutch for signs of wear (e.g., oil leakage, loose components) during routine maintenance.
We provide global shipping for this Claas-compatible fan clutch, with fast delivery to agricultural regions worldwide. For bulk orders, custom packaging, or technical support, please contact our customer service team. We offer a 12-month warranty on all products—your satisfaction is our top priority!