Belt Tensioner 3936202 3917485 3964636 for Cummins Engine 4BT 6BT 4B3.9 6B5.9 6C8.3
Keep your Cummins 4BT or 6BT engine running at peak performance with...
Keep your JCB 3C, 3CX, or Hydradig running smoothly with this reliable JCB Belt Tensioner designed to maintain optimal belt tension and prevent unexpected downtime. Engineered to replace OE part numbers 320/08651 and 320/08657, this tensioner ensures consistent power transmission, reducing the risk of costly repairs from loose or damaged belts.
| Parameter | Details |
|---|---|
| Part Name | Belt Tensioner |
| Replacement Part Numbers | 320/08584, 320/08651, 320/08657, 320/08759, 320/A8586, 320-08584, 320-08651, 320-08657, 320-08759, 320-A8586, 32008584, 32008651, 32008657, 32008759, 320A8586 |
| Compatible Brand | JCB |
| Condition | New Aftermarket |
| Warranty | 3-12 Month |
| Brand | Applicable Models |
|---|---|
| JCB Backhoe Loader | 1400B, 1550B, 1600B, 1700B, 214, 215, 216, 217, 3C, 3CX, 3D, 4CX |
| JCB Excavator | Hydradig |
When your JCB equipment breaks down due to a faulty belt tensioner, every hour of downtime costs money—whether it's missed project deadlines on the construction site or halted operations at the quarry. Many operators face the frustration of waiting 2-4 weeks for OEM parts that cost 30-50% more, only to discover counterfeit alternatives that fail prematurely and cause further damage. Sourcing the right tensioner for multiple JCB models like 3C, 3CX, and Hydradig from different suppliers only adds to the hassle.
Our JCB Belt Tensioner 320/08651 320/08657 solves these challenges by delivering the same reliability as OEM parts at a competitive price. As a professional supplier with 10 years of global export experience, we stock over 10,000 SKUs in our Guangzhou warehouse, ensuring this tensioner is ready to ship within 2-5 working days. Each unit comes from ISO-certified factories and undergoes pre-shipment performance testing, guaranteeing it meets the exact specifications for your JCB 3CX, 3C, or Hydradig machinery.
This belt tensioner plays a vital role in maintaining proper belt tension in JCB equipment operating in demanding environments—from construction sites and mining operations to port logistics and agricultural fields. It ensures consistent power transmission between the engine and auxiliary components, preventing slippage that can lead to overheating, reduced efficiency, or sudden breakdowns during critical tasks. Whether you're operating a JCB 214 backhoe loader or a Hydradig excavator, this tensioner is engineered to withstand the high vibrations and load fluctuations of heavy machinery.
Our tensioner features high-grade materials and precision manufacturing to ensure durability and perfect fit. The robust construction resists wear and corrosion, even in harsh working conditions, while the spring-loaded mechanism maintains optimal tension over time—eliminating the need for frequent adjustments. Each unit is designed to directly replace OEM part numbers 320/08651 and 320/08657, ensuring seamless installation without modifications. This attention to detail guarantees that your JCB equipment will maintain peak performance, reducing the risk of unexpected downtime.
Choosing a cheap, uncertified belt tensioner might save money upfront, but the hidden costs are significant. Counterfeit parts often fail within months, leading to二次 repairs, equipment downtime, and potential damage to other components like alternators or water pumps. Our tensioner, backed by a 3-12 month warranty, offers long-term value by reducing maintenance frequency and extending the service life of your JCB machinery. For fleet operators and repair centers, this means lower total cost of ownership and more reliable equipment performance.
We've earned the trust of customers in 120+ countries by delivering consistent quality and service. Our technical team, with 20+ industry professionals, verifies part compatibility within 2 hours, ensuring you get the right component for your specific JCB model. All parts undergo rigorous incoming material inspection and performance testing before shipment, matching OEM standards for fit and function. With our one-stop solution, you can source tensioners for multiple JCB models from a single supplier, streamlining your procurement process and reducing administrative hassle.
Don't let a faulty belt tensioner keep your JCB equipment idle. Send us your machine model, required quantity, and destination, and we'll provide a competitive quote within 24 hours. First-time customers can request sample testing to verify quality before bulk orders. With our fast shipping and expert support, you'll minimize downtime and get back to operations quickly.
Q: Is this a genuine JCB OEM part or aftermarket replacement?
A: This is an OEM-equivalent aftermarket part, manufactured by ISO-certified factories to meet the same specifications as genuine JCB components.
Q: How can I confirm this tensioner fits my specific JCB model?
A: Provide your machine's model number and serial number, or the original part number, and our technical team will verify compatibility within 2 hours.
Q: What is the warranty coverage for this belt tensioner?
A: We offer a 3-12 month warranty against manufacturing defects. If the part fails under normal use, we provide free replacement or refund.
Q: What is the minimum order quantity for this part?
A: We accept orders for 1 piece, supporting urgent maintenance needs for individual machines or small fleets.
Q: How long does shipping take to my location?
A: In-stock items ship within 2-5 working days. Delivery time depends on shipping method: Express (3-7 days), air freight (5-10 days), or sea freight (20-40 days).
Q: Can I request a sample before placing a large order?
A: Yes, first-time clients can order a sample for testing and quality verification before committing to bulk purchases.
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