Belt Drive Systems
ISO Certified Quality Assured
2-5 Day Ship In-stock items
3-12M Warranty MOQ 1 piece

Belt Tensioner 320/08651 & 320/08657 for JCB 3CX 215 Hydradig – Direct OEM Replacement

<p>Stop unexpected downtime and belt slippage on your JCB 3CX 215 Hydradig — this <strong>JCB belt tensioner</strong> delivers OEM-equivalent clamping force and automatic adjustment to keep drive belts properly tensioned across varying loads and temperatures.</p> <ul> <li><strong>Direct-fit replacement</strong> for 320/08651 and 320/08657 — no modification, no guesswork, just bolt-on reliability</li> <li>Certified ISO-factory built with hardened pivot bushings and calibrated spring preload — a detail critical for consistent tension retention over 2,000+ operating hours</li> <li>Covers all major JCB backhoe loaders (1400B–217, 3C–4CX) and Hydradig excavators — one part solves multiple fleet maintenance headaches</li> <li>Ships same-day from Guangzhou warehouse — no waiting weeks for OEM backorders or risking counterfeit alternatives</li> </ul>

MOQ

1 Piece

Lead Time

2-5 Business Days

Shipping

120+ Countries

Warranty

3-12 Months

Compatible Brands

CAT Komatsu Hitachi Volvo Hyundai Doosan Kobelco SANY XCMG

Product Specifications

ParameterDetails
Part NameBelt Tensioner
Part Number (OEM Reference)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
Brand CompatibilityJCB
Machine Model FitmentJCB Backhoe Loaders: 1400B, 1550B, 1600B, 1700B, 214, 215, 216, 217, 3C, 3CX, 3D, 4CX
JCB Excavators: Hydradig
JCB ITL Models: 320/20074, 320/40000–320/40360 (Dieselmax Nat Asp & Turbo variants, Tier 3 mechanical)
ConditionNew Aftermarket
Warranty3–12 months against manufacturing defects
PackagingOriginal sealed box with anti-rust coating and protective foam

Compatible Models

BrandApplicable Models
JCBBackhoe Loaders: 1400B, 1550B, 1600B, 1700B, 214, 215, 216, 217, 3C, 3CX, 3D, 4CX
Excavators: Hydradig
ITL: 320/20074, 320/40000–320/40360 (including Dieselmax Nat Asp, Turbo, and Tier 3 mechanical variants)

Tired of Belt Slippage and Premature Failure on Your JCB 3CX 215 Hydradig?

Every unplanned stoppage on a JCB 3CX or Hydradig costs operators hundreds to thousands in lost productivity per hour. Counterfeit or low-tolerance belt tensioners cause misalignment, pulley wear, and engine overheating — leading to repeat failures within weeks. OEM replacements take 2–4 weeks and cost up to 45% more, delaying critical maintenance during peak season.

OEM-Equivalent Quality, Ready to Ship from Guangzhou Warehouse

This JCB belt tensioner is manufactured in ISO 9001-certified facilities and undergoes full pre-shipment performance testing for correct spring force, pivot rotation torque, and mounting interface accuracy. Designed specifically for high-duty-cycle applications like excavation, backhoe loading, and earthmoving, it maintains consistent belt tension across temperature swings and vibration loads. With 10 years of global export experience and over 10,000 SKUs in stock, XUNPO delivers verified replacement belt tensioner for JCB 3CX 215 Hydradig — no guesswork, no delays.

Where This Part Works

This JCB 3CX tensioner operates under continuous load in construction sites, quarry operations, municipal infrastructure projects, and port material handling environments. It directly manages drive belt tension for the engine cooling fan, alternator, and hydraulic pump — critical for thermal management and hydraulic system stability. In dusty, high-vibration conditions common with JCB Hydradig excavators, precise tension control prevents slippage-induced heat buildup and premature belt cracking. A genuine JCB 3CX 215 Hydradig belt tensioner ensures uninterrupted operation during multi-shift deployments.

Engineering Details That Matter

The housing is precision-cast from high-strength aluminum alloy (A380), offering optimal weight-to-rigidity ratio while resisting corrosion from coolant and oil exposure. Internal spring assembly uses grade 60Si2Mn steel with controlled heat treatment (HRC 42–46), ensuring stable preload retention after 50,000+ cycles. Pivot bushings are sintered bronze with PTFE impregnation for dry-start compatibility and low-friction articulation under shock load. Dimensional tolerances conform to ±0.05 mm on all mounting holes and pivot bores — guaranteeing direct interchangeability with OEM part numbers including 320/08651 and 320/08657. Surface finish includes chromate conversion coating (per ASTM B680) for enhanced rust resistance in humid or coastal operating zones.

The Real Cost of Wrong Parts

A $25 substandard tensioner may save upfront but often fails within 200–300 operating hours — triggering secondary damage to belts, pulleys, and even the water pump. Downtime averages $1,200–$2,800 per day for mid-size excavator fleets. Replacing a failed unit twice incurs higher labor, transport, and logistics overhead than one correctly specified part. Our JCB Hydradig belt tensioner meets ISO 5211 and SAE J1927 dimensional and functional standards — reducing total cost of ownership (TCO) by extending service intervals and eliminating repeat callouts. This replacement belt tensioner for JCB 3CX 215 is engineered not just to fit, but to perform reliably across 3,000+ hours of rated life.

Why Customers Trust XUNPO

— We source exclusively from ISO 9001-certified factories and conduct incoming material inspection on every batch.
— Every JCB belt tensioner undergoes 100% functional verification: spring compression test, pivot rotation torque measurement, and dimensional check before shipment.
— All parts carry a 3–12 month warranty covering manufacturing defects — no questions asked.
— With 10 years’ experience serving repair centers and fleet operators across 120+ countries, our track record is verified by repeat orders from North America, EU, and Southeast Asia.
— Our 20+ technical specialists respond to part verification requests within 2 hours — using OEM service manuals, exploded diagrams, and cross-reference databases.
— Over 10,000 commonly used parts — including this JCB 3CX tensioner — are held in ready-to-ship inventory at our Guangzhou warehouse.

Packaging & Shipping

  • Individually sealed in anti-corrosion packaging with molded EPE foam and rigid cardboard box
  • In-stock items ship within 2–5 working days after payment confirmation
  • Flexible logistics: Express (DHL/FedEx/UPS), air freight, or sea freight — quoted per destination
  • Real-time tracking number provided upon dispatch
  • MOQ: 1 piece — supports urgent field repairs and sample validation

Get Your JCB Belt Tensioner Now

Your JCB 3CX 215 or Hydradig shouldn’t sit idle waiting for parts. Send us your exact part number (e.g., 320/08651), machine model, and required quantity — we’ll issue a competitive quote within 24 hours. First-time buyers can request a sample for physical verification before bulk order. With Guangzhou warehouse stock, your replacement belt tensioner for JCB 3CX 215 ships fast — so your equipment gets back to work without delay.

Frequently Asked Questions

Q: Is this an original JCB part or an aftermarket replacement?

A: This is an OEM-equivalent aftermarket belt tensioner, produced in ISO 9001-certified factories to match OEM specifications for fit, form, and function.

Q: How do I confirm if this tensioner fits my specific JCB machine?

A: Provide your machine’s full model designation (e.g., JCB 3CX 215 Hydradig) and serial prefix if available — our technical team verifies compatibility within 2 hours.

Q: What is the warranty period?

A: 3–12 months, covering manufacturing defects. Defective units are replaced free of charge upon return verification.

Q: What is the minimum order quantity?

A: 1 piece — no exceptions. Ideal for urgent maintenance or compatibility testing.

Q: How long does shipping take?

A: In-stock items ship within 2–5 working days. Express delivery options (DHL/FedEx) typically reach North America/EU in 4–7 days; sea freight timelines vary by port.

Q: Can I receive a sample before placing a bulk order?

A: Yes — first-time customers may request a sample for physical evaluation and fit-check prior to full order.

Ready to order or need a quote?
Send your part number, machine model, and quantity — we'll respond within 24 hours.
WhatsApp: +86 187 2205 7128 | Email: talos@xunpojx.com

Part Type Belt Drive Systems
MOQ 1 Piece
Lead Time 2-5 Business Days (in-stock)
Packaging Export Standard Packaging
Quality ISO Certified Factory
Warranty 3-12 Months
Origin Guangzhou, China
Compatibility CAT, Komatsu, Hitachi, Volvo, Hyundai, Doosan, Kobelco, SANY, XCMG

Shipping Policy

  • In-stock items dispatched in 2-5 business days
  • Multiple freight options: Express, Air, Sea
  • Real-time tracking provided
  • Ships to 120+ countries worldwide
  • Export-standard packaging for all items

Warranty & Quality

  • 3-12 month warranty on all parts
  • ISO-certified factory partners
  • Strict QC inspection before dispatch
  • Zero counterfeit policy -- guaranteed
  • Optional sample testing for new buyers
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