Belt Drive Systems - Heavy Equipment Parts

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

In Stock · MOQ 1 pc

View Details

Drive Belt 59011-1077 for Kawasaki Mule UTV – High-Durability Replacement

Stop losing uptime to premature belt failure — this Kawasaki Mule drive belt delivers consistent, high-torque power transfer across decades of KAF540 and KAF620-series models, even under heavy load or frequent stop-start operation. Engineered with aramid-reinforced poly-V construction — the same tensile strength spec used in OEM-spec replacement belts for KAF620E/J/M/H variants Fits 1990–2023 Mule 2010/2020/2030/3000/3010/3020/4000/4010 (including all Trans4x4, Camo, and SE submodels) without modification Direct replacement for both 59011-1077 and 59011-1053 — eliminates cross-reference confusion and ordering errors Pre-stretched and dynamically balanced to prevent early slippage or heat buildup in the CVT housing

In Stock · MOQ 1 pc

View Details

Belt 486586 for Scag SVRII-61V Mowers – Heavy-Duty Replacement

Stop losing uptime to deck drive belt failures — this Scag mower belt delivers rock-solid power transfer and extended service life on SVRII-61V mowers, even under heavy commercial cutting loads. Built with aramid-reinforced tensile cords and precision-molded cog geometry, it eliminates the slippage and premature stretch that plague generic replacements. Fits all major SVRII-61V variants including EFI, FX, and BV models — no guesswork on compatibility Direct replacement for OEM 486586 and cross-references like 754-05078, 266-187, and 539107709 Features a true 14.2° included angle on the V-cog profile — critical for proper engagement with Scag’s dual-pulley deck drive system Ships from our Guangzhou warehouse in 2–5 working days, with real-time tracking and 6-month warranty against manufacturing defects

In Stock · MOQ 1 pc

View Details

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

In Stock · MOQ 1 pc

View Details

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

In Stock · MOQ 1 pc

View Details

Belt 153263001 for Vermeer BC1000XL Chipper – Heavy-Duty Replacement

Stop unexpected downtime and costly delays when your Vermeer BC1000XL chipper belt fails mid-job — this heavy-duty replacement belt 153263001 delivers OEM-equivalent performance with faster availability and better value than factory parts. Exact fit for BC1000XL — engineered to match the original tension, flex angle, and cog geometry so your chipper runs smoothly without slippage or overheating Replaces 153263001, 265-776, and 265776 — no guesswork, no cross-referencing errors Made with aramid-reinforced EPDM compound — the same high-heat, high-torque material used in premium industrial drive belts (not standard rubber) Ships from our Guangzhou warehouse in 2–5 working days — even for single-piece orders

In Stock · MOQ 1 pc

View Details

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

In Stock · MOQ 1 pc

View Details

V-Belt 178509 for Cummins N14 NH855 NT855 – High-Strength Oil-Resistant CX Belt

Stop unexpected downtime and costly engine damage from belt slippage or oil degradation — this V-belt 178509 for Cummins N14/NH855 delivers OEM-equivalent grip and longevity, even under continuous high-load, high-temperature operation. Oil-resistant CX profile with 22mm top width × 1147mm effective length — the exact geometry required for proper pulley engagement on N14 mechanical and NH855 engines (not just “close enough” metric equivalents) Replaces both 178509 and 76107717 — verified fit for NH220, NH250, NT855, and NTA855 without modification or tensioning guesswork Polyester cord reinforcement + heat-stabilized rubber compound prevents stretch and edge cracking — a known failure point in generic belts after 300–500 operating hours Ships same day from Guangzhou warehouse — no waiting weeks for OEM backorders or risking counterfeit imports

In Stock · MOQ 1 pc

View Details

Drive Pump Belt 6736775 for Bobcat Loaders – Quiet, Long-Lasting Replacement

Stop wasting time and money on noisy, short-lived drive belts that slip under load — this 6736775 belt delivers quiet, slippage-free power transfer right from the first installation. Built for Bobcat loaders that run hard and demand reliability, it eliminates the high-pitched whine and premature wear that plague standard replacements. Advanced variable cog design with 3 precisely spaced grooves ensures perfect meshing with the pump pulley — no guesswork, no misalignment Fiber-loaded backing + dual-cord reinforcement cuts heat buildup by up to 30%, extending service life even in continuous-duty cycles Exact OEM dimensions: 58.15″ L × 1.19″ W — fits S150, T190, Toolcat 5600 and 8 other models without modification Ships same-day from Guangzhou warehouse — no waiting weeks for OEM backorders or counterfeit risks

In Stock · MOQ 1 pc

View Details

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

In Stock · MOQ 1 pc

View Details

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

In Stock · MOQ 1 pc

View Details

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

In Stock · MOQ 1 pc

View Details