Belt Drive Systems 3 - Heavy Equipment Parts

3 Groove Pump Drive Belt 6660994 for Bobcat 753/763/773/7753 – EPDM + Aramid Reinforced

Stop unexpected pump drive failures and costly downtime on your Bobcat 753, 763, 773 or 7753 — this bobcat pump drive belt delivers OEM-matched fit and superior heat/elongation resistance thanks to EPDM rubber + aramid fiber reinforcement. Unlike standard CR/polyester belts, it holds dimensional stability under continuous high-load operation — critical for skid steers running multiple shifts in hot or dusty conditions. Exact replacement for Bobcat part number 6660994 3VX profile (3×10×1550La) — a joined belt with no splice weakness, engineered for smooth, vibration-free power transfer Withstands >150°C intermittent heat and resists ozone cracking — ideal for outdoor, high-utilization fleets MOQ 1 piece, shipped same day from Guangzhou warehouse if in stock

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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 Set 78-1341/78-603/78-629 for Thermo King SB 200–400 Refrigeration Units

Get your Thermo King SB 200–400 refrigeration unit back online fast—no more downtime waiting for OEM belts or risking counterfeit kits that snap under load. This direct replacement belt set for Thermo King SB units delivers OEM-equivalent performance with rigorous pre-shipment tension and alignment testing, so you avoid the premature wear and compressor strain common with mismatched or off-spec belts. Includes all three critical belts in one kit: alternator (78-1341), fan (78-603), and engine/idler (78-629) — no hunting for separate SKUs Fits the full SB 200–400 range including SB 210+, 230+, 310+, 330, and 30 Multi-Temp — verified against Thermo King’s latest service bulletins Each belt is stamped with batch-coded date marks and molded with high-grip EPDM compound for heat resistance up to 120°C — a detail pros check before installation Ships same-day from our Guangzhou warehouse when ordered before 3 PM CST — no MOQ, no delays, no guesswork

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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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Ribbed Serpentine Belt 3911584 for Cummins 4B, 4BT, 6B, 6BT, ISB – High-Tensile Replacement

Stop unexpected breakdowns and costly downtime from belt slippage or premature failure — this Ribbed Serpentine Belt 3911584 for Cummins 4B/4BT/6B/6BT/ISB delivers OEM-matching grip and longevity, even under high-torque, high-heat conditions common in B-series engine bays. Fits exactly across 12+ Cummins B-series variants — including ISB CM550, 4B3.9, and 6C8.3 — with correct 8/K section geometry and precise 8-rib pitch spacing (critical for tensioner alignment) Made to D&D Power Drive spec with high-tensile EPDM compound — resists cracking, glazing, and stretch far longer than generic rubber belts Ships from Guangzhou warehouse same day if ordered before 3 PM CST — no waiting weeks for OEM backorders Backed by XUNPO’s 6-month warranty and real-time technical support for fitment verification

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Alternator Belt 78-1918 / 78-1543 for Thermo King TriPac APU Replacement

Stop APU downtime before it starts — this Thermo King alternator belt delivers OEM-equivalent grip and longevity for TriPac APU units, so your refrigerated trailer stays powered through peak loads and extreme temps. Direct-fit replacement for part numbers 78-1918 and 78-1543 — no guesswork, no misalignment, no premature slippage Made with aramid-reinforced EPDM compound (not standard rubber) for heat resistance up to 120°C and crack-free service beyond 25,000 miles Ships same-day from our Guangzhou warehouse — no waiting weeks for OEM backorders or risking counterfeit belts with inconsistent pitch tolerances Verified against Thermo King’s latest TriPac Gen3 & Gen4 APU service specs, including correct 8.5mm rib depth and 16.5° angle for optimal pulley engagement

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Water Pump Belt 78-1492 for Thermo King Refrigeration Units – Direct Fit Replacement

Stop unexpected shutdowns and keep your Thermo King refrigeration units running at peak cooling efficiency — this Thermo King water pump belt delivers OEM-equivalent tension retention and heat resistance, even under continuous heavy-duty cycles. Fits 27+ Thermo King models including TK370, T-600, TS-200, MD-300, and TriPac APU — no guesswork needed Replaces part numbers 78-1492, 78-1426, 77-2848, CP10537, and more — cross-reference verified against Thermo King’s latest service bulletins Made with high-modulus EPDM compound and precision-molded cog geometry for zero slippage on dual-pulley engine drives — a critical spec most generic belts skip Ships from Guangzhou warehouse in 2–5 working days — no waiting weeks for OEM backorders or risking counterfeit imports

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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 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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Narrow V-Belt 0117-9565 for Deutz 1011/2011 Engines – 10×1125 mm Replacement

Stop downtime from stretched or cracked belts—this Narrow V-Belt 0117-9565 for Deutz 1011/2011 engines delivers OEM-matched tension retention and heat resistance, so your BF4M2011 or F3L1011F stays online longer between replacements. Exact 10×1125 mm profile with precision-ground poly-V grooves—critical for proper engagement on Deutz’s shallow-pitch pulley systems Cross-references four factory part numbers (0117-9565, 01179565, 02235179, 2324000890) to eliminate guesswork during urgent repairs Made in ISO-certified facilities using EPDM rubber compound—resists ozone cracking and oil mist better than generic imports Ships same-day from Guangzhou warehouse when ordered before 3 PM CST—no waiting weeks for OEM backorders

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Main Pump Drive Belt 6667322 for Bobcat S175/S185/S205 – High-Durability Cogged Belt

Stop losing uptime to premature belt failure or noisy, slipping main pump drives — this bobcat main pump belt delivers quiet, vibration-free power transfer and consistent hydraulic response even under heavy-duty skid steer cycles. 3-groove cogged design with fiber-loaded backing reduces heat buildup and extends service life beyond standard OEM-spec belts Fits Bobcat S175, S185, S205 — plus S130/S150/S160 and T140/T180/T190 — all with exact 6667322 interchange compatibility Engineered for high-torque main pump engagement: no stretch, no slippage, no re-tensioning needed between services Ships from our Guangzhou warehouse in 2–5 working days — MOQ just 1 piece, no minimum order hassle

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Drive Belt 106-4383 for Toro Groundsmaster 322-D to 345 – Heavy-Duty Replacement

Stop downtime and keep your Toro Groundsmaster mowing at full capacity — this toro drive belt delivers OEM-matching performance with heavy-duty aramid cord reinforcement for extended service life under high-torque 72-inch deck loads. Fits exactly: Verified for Toro 322-D, 325-D, 327, 328-D, 345, and 30721 — no guesswork, no misalignment-induced wear Multiple cross-reference numbers included: 106-4383, 53-9660, 265-896, 23-1820 — so you can match legacy service manuals or old inventory tags instantly Pre-stretched during manufacturing to eliminate break-in slippage — a critical detail most aftermarket belts skip, causing early tension loss and deck stall Ships from our Guangzhou warehouse in 2–5 working days, even for single-piece orders — because urgent replacements shouldn’t wait weeks

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