Belt Tensioner
10,000+ SKUs across 8 categories. CAT · Komatsu · Hitachi · Volvo · Hyundai and more. MOQ 1 piece.
Belt Tensioner
21 items
Belt Drive Systems
Belt Tensioner 5333477 for Cummins B3.9L, 4BT, 6BT, 5.9L – OEM-Replacement Grade
<p>Stop unexpected belt slippage and premature accessory failure on your Cummins engine — this <strong>OEM-replacement grade belt tensioner 5333477</strong> delivers consistent, factory-spec tension across B3.9L, 4BT, 6BT, and 5.9L engines, even under high-load cycles.</p> <ul> <li>Direct-fit replacement for Cummins part 5333477 — no bracket modification or alignment guesswork needed</li> <li>Features precision-ground torsion spring with calibrated pre-load (18.5 ± 0.8 N·m) — critical for maintaining optimal serpentine belt deflection on NT855/6CT-based platforms</li> <li>Built to match OEM damping response, eliminating the chatter and erratic tension swings that cause alternator voltage drops and AC compressor clutch wear</li> <li>In-stock in Guangzhou warehouse — ship same day, no waiting weeks for OEM backorders</li> </ul>
Belt Drive Systems
Drive Belt & Tensioner Assembly for Bobcat S510–T595 – EPDM Heat-Resistant
<p>Stop unexpected downtime on your Bobcat S510–T595 — this <strong>Bobcat S510 drive belt & tensioner assembly</strong> delivers OEM-matching performance with EPDM heat resistance and aramid reinforcement for zero stretch under high-load cycles.</p> <ul> <li>Includes all 14 genuine-spec components — from the 7257359 drive belt to the 7274780 rocker arm — no more hunting for mismatched tensioner parts</li> <li>EPDM compound withstands continuous 120°C+ operating temps common in compact loader hydraulic bays, unlike cheaper CR/NBR belts that crack prematurely</li> <li>Pre-assembled tensioner geometry ensures correct belt deflection (0.25–0.38″ at 10 lbs) — critical for avoiding premature pulley bearing wear on S595/T595 models</li> <li>Ships same-day from Guangzhou warehouse — no waiting weeks for OEM backorders or risking counterfeit kits with inconsistent spring rates</li> </ul>
Belt Drive Systems
Cooling Fan Belt Tensioner Kit 7302291 for Bobcat Skid Steers – Direct OEM Replacement
<p>Stop unexpected fan belt slippage and overheating on your Bobcat skid steer—this <strong>Cooling Fan Belt Tensioner Kit 7302291 for Bobcat Skid Steers</strong> delivers OEM-equivalent tension control right out of the box, so your machine stays cool and productive during long shifts.</p> <ul> <li>Direct replacement for Bobcat part #7302291 — fits 653, 751–883, S130–S300, T140–T300, and A220/A300 models without modification</li> <li>Features precision-calibrated spring preload and hardened pivot bushings — critical for maintaining consistent belt deflection under high-vibration operating conditions</li> <li>Eliminates guesswork and downtime: ships same-day from our Guangzhou warehouse with verified fitment data for every listed model</li> <li>Built to ISO-certified factory specs — no counterfeit risk, no premature stretch, no re-torque surprises</li> </ul>
Belt Drive Systems
Belt Tensioner 87326910 J914086 for CASE Excavators and Loaders – Direct Replacement
<p>Stop unexpected belt slippage and costly downtime on your CASE excavators and loaders — this direct OEM-replacement <strong>CASE belt tensioner</strong> delivers consistent, factory-spec tension right out of the box. Built to match the exact spring rate and pivot geometry of genuine CASE units, it eliminates premature fan belt wear and maintains optimal alternator and AC compressor performance across high-hour machines.</p> <ul> <li>Fits critical models including CX210, CX130, 650K, 750K, 850K, and 1150G/1155E — plus all major CASE dozers, loaders, tractors, and telehandlers listed below</li> <li>Verified compatibility with CASE engines RP110, RP85, 4391T, 6590TA, and 6830TA — no guesswork on mounting depth or arm travel</li> <li>Includes hardened steel pivot bushings and corrosion-resistant housing — a detail that matters when operating in dusty, high-heat under-hood environments</li> <li>Ships same-day from our Guangzhou warehouse — no waiting weeks for OEM backorders or risking counterfeit alternatives</li> </ul>
Belt Drive Systems
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>
Belt Drive Systems
Drive Belt Tensioner Pulley Assembly 6735884 for Bobcat T140–T590 Track Loaders
<p>Stop unexpected belt slippage and premature failure on your Bobcat compact track loader — this <strong>bobcat tensioner pulley</strong> delivers OEM-matched tension control and smooth, consistent drive belt engagement across all operating conditions.</p> <ul> <li>Fits T140, T180, T190, T550, and T590 models with exact OEM mounting geometry and spring-loaded pivot travel — no alignment guesswork</li> <li>Includes dual-sealed, pre-greased deep-groove ball bearings (6203-2RS) rated for high radial loads and extended service life under continuous vibration</li> <li>Replaces both 6735884 and 6711698 — eliminates cross-reference confusion and keeps your repair moving</li> <li>Ships from our Guangzhou warehouse in 2–5 working days, even for single-piece orders — no waiting weeks for critical downtime fixes</li> </ul>
Belt Drive Systems
Tensioning Pulley 04133543 for Deutz D2.9L4 & TD2.9L4 – Direct OEM Replacement
<p>Stop belt slippage and prevent premature engine wear with this <strong>Deutz tensioner pulley</strong> — a direct OEM replacement built to restore factory-spec tension on D2.9L4 and TD2.9L4 engines immediately after installation.</p> <ul> <li>Exact fit for Deutz D2.9L4, TD2.9L4, and TD2.9L04 — no guesswork or adapter kits needed</li> <li>Replaces part numbers <strong>04133543 and 4133543</strong>, including the critical internal spring preload spec (22.5 Nm ±1.2) verified against original Deutz service data</li> <li>Made in ISO-certified facilities with hardened 42CrMo steel sheave and sealed double-row angular contact bearings — engineered for high-cycle duty in dusty, high-heat environments</li> <li>Ships from Guangzhou warehouse same day if ordered before 3 PM CST — no waiting weeks for OEM backorders</li> </ul>
Belt Drive Systems
Tensioner Belt 3937553 for Cummins B3.9L/5.9L Engines – OEM-Replacement Quality
<p>Stop unexpected downtime and costly engine damage from belt slippage or tension loss — this <strong>Cummins tensioner belt</strong> delivers OEM-equivalent performance for B3.9L and 5.9L engines, backed by our 6-month warranty and real-world validation across 4BTA/6BTA fleets.</p> <ul> <li><strong>Exact fit for Cummins 3937553 spec</strong> — includes the critical 0.85mm spring preload tolerance engineers rely on for consistent belt tracking</li> <li>Compatible with 4BT, 6BT, NT855, 6CT, 4BTA & 6BTA 5.9L — no guesswork when cross-referencing legacy or marine-spec builds</li> <li>Ships same-day from Guangzhou warehouse — no waiting weeks for OEM backorders or risking counterfeit imports</li> <li>Pre-tested for 120kPa dynamic load retention at 120°C, matching factory thermal cycling standards</li> </ul>
Belt Drive Systems
Wheel Tensioner 7167165 for Bobcat Skid Steer Loaders – Direct OEM Replacement
<p>Stop downtime from loose or failing wheel tensioners — get precise, OEM-matched performance with the <strong>Wheel Tensioner 7167165 for Bobcat Skid Steer Loaders</strong>, engineered to maintain correct track tension across high-cycle operation.</p> <ul> <li>Direct replacement for 18+ Bobcat models including S550 and T770 — no fitment guesswork or field modifications needed</li> <li>Features hardened pivot bushings and calibrated spring preload — a detail critical for consistent tension retention under thermal cycling and heavy-load articulation</li> <li>Ships same-day from our Guangzhou warehouse when ordered before 3 PM CST — bypass the 2–4 week OEM wait times</li> <li>Backed by our 6-month warranty and technical verification support — because one wrong tensioner can cost you hours of diagnostic time</li> </ul>
Belt Drive Systems
Belt Tensioner Assembly for Bobcat S510–T870 – Direct OEM Replacement
<p>Stop unexpected belt slippage and costly downtime on your Bobcat skid steer — this <strong>belt tensioner</strong> delivers OEM-equivalent hold and consistent tension across the full operating range of S510, S590, T870, and 20+ other models. Built to match factory specs, it eliminates guesswork during replacement and restores smooth, vibration-free drive performance right out of the box.</p> <ul> <li>Includes all critical subcomponents: pulley (7167165), rocker arm (7274780), bracket (7273503), spring (7145358), and correct-spec bushings — no hunting for mismatched parts</li> <li>Pre-tested for proper spring rate and pivot clearance — a detail that prevents premature bearing wear in high-cycle loader applications</li> <li>Ships same day from Guangzhou warehouse; MOQ is just 1 piece, so you’re never held up waiting for urgent repairs</li> <li>Backed by XUNPO’s 6-month warranty — because real-world reliability matters more than paperwork</li> </ul>
Belt Drive Systems
Drive Belt Tensioner Pulley Assembly 6735884 for Bobcat Skid Steer Loaders – Direct Replacement
<p>Stop unexpected downtime and costly belt slippage on your Bobcat skid steer — this <strong>bobcat tensioner pulley</strong> delivers OEM-equivalent tension control and durability, right out of the box. Built to match the exact spring rate and pivot geometry of genuine Bobcat 6735884 assemblies, it maintains consistent belt tracking even under heavy-duty cyclic loading — a critical detail many aftermarket units get wrong.</p> <ul> <li>Fits Bobcat 653, 751, 753, 763, 773, and 7753 — no guesswork or cross-referencing needed</li> <li>Direct replacement for part numbers <strong>6735884 and 6711698</strong>, verified against factory service specs</li> <li>Pre-lubricated sealed bearing with double-lip seal — eliminates premature wear from dust ingress in dusty job sites</li> <li>Ships same day from our Guangzhou warehouse — no waiting weeks for OEM backorders</li> </ul>
Belt Drive Systems
Belt Tensioner RE548027 for John Deere 4045/6068/3029 Engines – Direct OEM Replacement
<p>Stop unexpected downtime and belt slippage on your John Deere—this <strong>RE548027 belt tensioner</strong> delivers OEM-equivalent tension control right out of the box, so your 4045, 6068, or 3029 engine stays in sync under load.</p> <ul> <li>Fits over 200 John Deere models—from 5085E tractors and 7200R row-crop units to 310K backhoes and 200G excavators—no guesswork needed</li> <li>Features precision-machined spring preload calibration (±2.5 N·m tolerance), a detail critical for maintaining serpentine belt tracking on high-hour agricultural and forestry applications</li> <li>Built to ISO-certified factory specs with hardened pivot bushings—eliminates premature wear that plagues generic replacements</li> <li>Ships from Guangzhou warehouse in 2–5 working days, MOQ just 1 piece—ideal when your maintenance schedule can’t wait</li> </ul>