Belt Tensioner

Belt Drive Systems

Belt Tensioner Assembly for Cummins 6C, ISB, QSB Engines – Direct Replacement

Stop unexpected belt slippage and premature accessory failure on your Cummins-powered equipment — this belt tensioner delivers consistent, OEM-matched tension right out of the box. Built to replace 3936213, 5259022, and 3976831, it eliminates the guesswork and downtime caused by worn or inconsistent factory units. Fits Cummins 6C, ISB, QSB, 4B3.9, 6B5.9, B6.7, and 10+ other engine families — no cross-referencing headaches Features a precision-calibrated hydraulic damper (not just spring-loaded) for smooth, vibration-dampened tension control Ready to ship same day from our Guangzhou warehouse — no waiting weeks for OEM backorders Backed by XUNPO’s 6-month warranty and technical verification support before you order

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Belt Drive Systems

Drive Belt Tensioner Pulley Assembly 6735884 for Bobcat Skid Steer Loaders

Stop unexpected downtime and costly belt slippage on your Bobcat skid steer — this bobcat tensioner pulley delivers OEM-matched tension control and smooth, consistent drive belt tracking across high-hour cycles. Direct-fit replacement for models 653, 751, 753, 763, 773, and 7753 — no modification or alignment guesswork needed Features precision-ground, sealed-for-life ball bearings (not bushings) — critical for resisting heat buildup during extended loader operation Includes both factory cross-references: 6735884 and 6711698 — so you’re covered whether your service manual or parts catalog lists either Ships from our Guangzhou warehouse in 2–5 working days — no waiting weeks for OEM backorders

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Belt Drive Systems

Belt Tensioner 87326910 J914086 for CASE Excavators and Loaders

Stop unexpected fan belt slippage and costly downtime on your CASE equipment — this direct-replacement CASE belt tensioner delivers OEM-equivalent tension control with zero fitment guesswork. Built to exact factory specs, it eliminates the risk of counterfeit parts causing premature wear or engine overheating. Fits 30+ CASE models — from 1088 excavators and CX210 loaders to RP110/RP85 engines — all in one verified part Includes dual-spring preload calibration for consistent belt tracking under heavy-duty cycles (a detail critical for high-hour fleet operators) Ships same-day from our Guangzhou warehouse — no waiting weeks for OEM backorders Backed by XUNPO’s 6-month warranty and technical verification support before you order

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Belt Drive Systems

Wheel Tensioner 7167165 for Bobcat Skid Steer Loaders – Direct Replacement

Stop downtime from loose or failing wheel tensioners — get precise, long-lasting track tension control on your Bobcat skid steer with the Wheel Tensioner 7167165, a direct OEM replacement built to match factory specs and performance. Fits 18+ Bobcat models including S550, S570, S770, T770, A770, and all major S/T/A-series loaders — no guesswork needed Made with hardened alloy steel pivot bushings and calibrated spring preload — the kind of detail that prevents premature wear in high-vibration, high-cycle applications Ships from our Guangzhou warehouse in 2–5 working days, with MOQ just 1 piece — ideal when you need it now, not next month Backed by XUNPO’s 6-month warranty and technical verification — because swapping in the wrong tensioner costs more than the part

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Belt Drive Systems

Tensioner Belt 3937553 for Cummins B3.9L/5.9L Engines – OEM-Replacement Quality

Stop unexpected downtime and costly engine damage from worn or failing belt tension — this Cummins tensioner belt delivers OEM-equivalent performance and precise automatic tension control for B3.9L and 5.9L engines. Built to match the exact spring rate and pivot geometry of genuine Cummins 3937553 units, it maintains optimal serpentine belt deflection across temperature swings and load cycles — a critical spec often overlooked in generic replacements. Direct-fit replacement for Cummins 4BTA, 6BTA, 4BT, 6BT, 6CT, and NT855 engines Rigorously tested for 300,000+ cycles at full operating torque — no premature spring fatigue Includes OEM-spec polyamide pulley with sealed double-row bearings (not pressed-in bushings) Ships same-day from our Guangzhou warehouse — no waiting weeks for OEM backorders

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Belt Drive Systems

Belt Tensioner RE518097 for John Deere 4045/6068 Engines – Direct Replacement

Stop unexpected downtime and belt slippage on your John Deere 4045 or 6068 engine — this RE518097 belt tensioner delivers OEM-equivalent tension control right out of the box, so your excavator, loader, or combine stays productive through long shifts. Direct-fit replacement for RE518097 — no modifications, no guesswork, and no risk of misalignment from aftermarket tolerances Features precision-machined spring-loaded pivot geometry — critical for maintaining consistent belt deflection across varying load cycles (a detail often overlooked in generic tensioners) Eliminates the frustration of hunting across multiple suppliers: one part covers 120+ John Deere models — from 200DLC excavators to 9750STS combines and 750J dozers Backed by our 3–12 month warranty and real-time technical verification — because getting the right part the first time matters more than a cheap quote

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Belt Drive Systems

Belt Tensioner Pulley 7269057 for Bobcat A770 S630–S850 T630–T870 – Direct OEM Replacement

Stop unexpected downtime and costly belt slippage on your Bobcat skid steer or track loader — this bobcat belt tensioner delivers OEM-equivalent performance with faster availability and smarter pricing. Built to exact Bobcat specs, it maintains optimal belt tension across high-cycle operations, extending drive belt life and reducing maintenance frequency. Fits all key Bobcat models: A770, S630–S850, T630–T870 — no more juggling multiple part numbers Direct replacement for 7269057 and 7141788, including correct spring preload calibration and bearing race geometry Pre-tested for dynamic load response — critical for loaders under heavy hydraulic demand and rapid directional shifts Ships same day from our Guangzhou warehouse (MOQ just 1 piece) — bypass 3-week OEM lead times

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Belt Drive Systems

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

Stop unexpected downtime and costly belt slippage on your JCB 3CX 215 Hydradig — this direct OEM replacement JCB belt tensioner delivers precise, consistent tension right out of the box, just like factory-fresh. Built to match the exact spring rate and pivot geometry of genuine JCB 320/08651 & 320/08657 units, it eliminates guesswork during installation and prevents premature alternator or AC compressor failure caused by underspec’d aftermarket units. Verified fit for 21+ JCB models, including all 3CX, 215, Hydradig, and Dieselmax-powered ITLs (320/400xx series) Replaces 15+ part numbers — no more cross-referencing confusion or ordering wrong variants Made with ISO-certified heat-treated alloy steel arms and sealed-for-life bearings — critical for high-cycle backhoe loader duty Ships same day from Guangzhou warehouse; MOQ is just 1 piece for urgent field repairs

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Belt Drive Systems

Drive Belt & Tensioner Assembly for Bobcat S510–T595 – EPDM Heat-Resistant

Stop unexpected downtime and costly repairs on your Bobcat S510–T595 — this Drive Belt & Tensioner Assembly for Bobcat S510–T595 – EPDM Heat-Resistant delivers OEM-matched durability with faster shipping and no MOQ hassle. Built for high-cycle loaders, it eliminates the stretch-and-slip common in aging tensioner setups — especially critical on S595/T595 models where belt misalignment triggers premature pulley wear. EPDM compound withstands continuous 120°C+ underhood temps — no cracking or hardening like inferior CR/NBR belts Includes full assembly: drive belt (7257359), tensioner bracket (7273503), rocker arm (7274780), pulley (7167165), and all fasteners — no cross-referencing headaches Pre-tested for correct spring force (7145358) and aramid cord tension — ensures consistent 3VX profile tracking under load Ships from Guangzhou warehouse same day if ordered before 3 PM CST — no waiting weeks for OEM backorders

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Belt Drive Systems

Belt Tensioner for New Holland T6080/T6090/T7.210 – Direct Replacement

Stop unexpected downtime and costly belt slippage on your New Holland T6080/T6090/T7.210 — this New Holland belt tensioner delivers consistent, OEM-matched tension right out of the box, so your engine stays protected and your loader runs smoothly through long shifts. Fits 20+ models including LB110.B, B115.TIER 3, and TS6030 — verified against factory service manuals, not just part numbers Engineered with hardened pivot bushings and calibrated spring preload — a detail that prevents premature wear in high-vibration applications like haytools (HW325) and Tier 3 loaders Replaces 12+ legacy numbers including 504315786 and 87803067, eliminating cross-reference guesswork and shipping delays Tested under load at 1,800 RPM to match OEM deflection specs — no “close enough” tolerances that cause belt chirping or misalignment

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Belt Drive Systems

Belt Tensioner for Cummins 4BT/6BT Engines – Direct Replacement with OEM Fit

Stop unexpected belt slippage and premature engine wear—this Cummins belt tensioner delivers consistent, OEM-grade tension across high-vibration excavator duty cycles. Built to match the exact spring rate and pivot geometry of factory units, it eliminates the guesswork and downtime caused by mismatched aftermarket tensioners. Fits Cummins 4BT/6BT engines and Hyundai R210LC-7, R130W-3, R160LC-3 & 20+ other models—no adapter kits or field modifications needed Replaces part numbers 3936202, 3917485, 3964636 — verified against Cummins’ latest service bulletin CM-2023-08 for B-series timing drive compatibility Features hardened steel pivot bushings (not sintered bronze) — critical for resisting side-load deformation in high-hour mining and demolition applications Ships from our Guangzhou warehouse in 2–5 working days, with real-time tracking and 3–12 month warranty

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Belt Drive Systems

Tensioning Pulley 04133543 for Deutz D2.9L4 & TD2.9L4 Engines – Direct Replacement

Stop unexpected belt slippage and premature engine wear—this Deutz tensioner pulley 04133543 delivers OEM-equivalent tension control for D2.9L4 and TD2.9L4 engines, right out of the box. Direct replacement for part numbers 04133543 and 4133543 — no fitment guesswork or costly downtime Features precision-ground bearing race geometry and calibrated spring preload — critical for maintaining correct serpentine belt deflection on Deutz’s compact D2.9 platform Ships from our Guangzhou warehouse in 2–5 working days, even for single-piece orders Backed by our 6-month warranty against manufacturing defects — because counterfeit tensioners fail silently, then catastrophically

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