Belt Tensioner
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Belt Tensioner
73 items
Belt Drive Systems
Wheel Tensioner 7167165 for Bobcat Skid Steer Loaders – Overhaul Component
<p><strong>Wheel Tensioner 7167165 for Bobcat Skid Steer Loaders</strong> — replacement for Bobcat A770, S510, S530, S550, S570, S590, S630, S650, S750, S770, S850, T550, T590, T630, T650, T750, T770, T870 models. Features forged carbon steel housing with zinc-nickel plating for 720-hour salt-spray resistance, ±0.15 mm dimensional tolerance, and ±3% spring force stability across -20°C to +70°C operating range.</p> <p>This undercarriage track tensioner maintains proper chain tension between idler and sprocket, reducing parasitic engine load and preventing asymmetric wear on track shoes and link bushings. Inspect idler bearings and drive sprocket concurrently when replacing tensioner to avoid repeat failures from residual system wear.</p> <p>Dimensional inspection record covering pivot pin, bushing clearance, and mounting pattern included with shipment.</p>
Belt Drive Systems
System-Matched Belt Tensioner – Fits Cummins 6C ISB QSB
<p><strong>3936213 5259022 3976831 Belt Tensioner</strong> – A380 aluminum alloy housing with T6 heat treatment, 40Cr steel pivot shaft, complete assembly.</p> <ul> <li>Fits Cummins 6C, ISB, QSB, 6B5.9, ISC, QSC, ISL, QSL and John Deere 7200R, 8370R, S770 engines</li> <li>Dual-lip NBR sealing prevents grease migration into timing covers during front-end rebuilds</li> <li>Tensioner spring fatigue causes belt slippage and accessory drive noise; replace as a matched set with serpentine belt and idler pulleys during overhaul</li> <li>System-level belt drive supply ensures correct tension control for alternator output and coolant pump flow</li> </ul> <p>Oversize grades and matched component sets confirmed against your engine serial before dispatch.</p>
Belt Drive Systems
Rebuild Kit Belt Tensioner RE518097 Compatible with John Deere
<p><strong>RE518097 Belt Tensioner</strong> for John Deere 4045, 6068 and 6125 series engines — forged steel housing, SAE J1926 sealing, dynamic force 120–135 N·m</p> <ul> <li>Fits within the front-end belt drive system; replace with idler pulleys, belts and fan hub bearings as a matched set during overhaul to prevent premature re-failure caused by mismatched wear across the drive loop.</li> <li>Confirm engine serial prefix before ordering, as 4045 and 6068 variants may differ in belt routing and tensioner mounting configuration.</li> </ul> <p>Overhaul kit contents verified item by item before dispatch to ensure every belt drive component matches your engine build record.</p>
Belt Drive Systems
Belt Tensioner 3936202 3917485 3964636 – Overhaul Component for Cummins 4BT 6BT
<p><strong>Belt Tensioner 3936202 3917485 3964636 for Cummins 4BT / 6BT / 6C8.3</strong> — engineered to match Cummins accessory drive preload specifications across 4B3.9, 6B5.9, B4.5, QSL9, and QSB6.7 engine families used in Hyundai R130LC-3 through R250LC-3 excavators.</p> <ul> <li>Works as part of a matched belt drive set — replacing without inspecting idler pulleys, belt condition, and bracket alignment risks repeat failure within hundreds of hours</li> <li>Spring force and pivot torque verified per engine serial variant to ensure correct alternator and water pump engagement</li> </ul> <p>Cross-reference numbers (3936202, 3917485, 3964636) validated against engine build records — matched belt drive overhaul components ship together with full system compatibility confirmed.</p>
Belt Drive Systems
Tensioner Belt 3937553 | Engine Grade for Cummins B3.9L 5.9L 4BTA 6BTA
<p><strong>Belt Tensioner 3937553</strong> for Cummins B3.9L, B5.9L, 4BT, 6BT, 4BTA, 6BTA engines — forged SAE 1045 steel hub, HRC 40–45 heat treatment, ±3 N·m preload tolerance.</p> <ul> <li>Critical to the belt drive system during engine overhaul; replace alongside belts and pulleys as a matched set to ensure consistent tension and prevent early belt wear or slippage.</li> <li>Superseded or variant differences exist between serial ranges — confirm engine build before ordering.</li> </ul> <p>Overhaul kit contents cross-checked line by line before dispatch.</p>
Belt Drive Systems
Belt Tensioner for New Holland Tractor – Engine Grade
<p><strong>Belt Tensioner 504315786 504028028 87803067, High-Strength Ductile Iron Housing, Zinc-Nickel Plated</strong> — replacement for New Holland T6080, T7.210, TS135A and B95B series engines. </p> <ul> <li>Part of the front-end belt drive system; matched supply with belts, idlers and fan pulleys to prevent secondary failure from adjacent worn components </li> <li>Spring deflection and radial runout verified per engine serial variant, supporting accurate fitment across F4DFE/F4HFE rebuild histories </li> <li>Overhaul kit contents cross-checked line-by-line before dispatch</li> </ul>
Belt Drive Systems
Bobcat-Compatible Belt Tensioner Pulley 7269057 – Overhaul Component
<p><strong>7269057 Belt Tensioner Pulley for Bobcat A770, S630–S850, T630–T870</strong> — forged 40Cr steel housing with sealed 6203-2RS angular contact bearing, SPZ belt groove profile.</p> <ul> <li>Fits Bobcat skid steer and track loader engines as accessory drive tensioner (cross-reference 7141788)</li> <li>Correct tensioning protects fan drive, alternator, and cooling circuit from cascading failure</li> <li>Replace as matched set with belts and idler pulleys during engine overhaul to address root cause</li> </ul> <p>Overhaul kit contents verified item-by-item against your engine serial variant before dispatch</p>
Belt Drive Systems
RE548027 Belt Tensioner for John Deere 4045 6068 – Engine Grade
<p><strong>RE548027 Belt Tensioner</strong>, replacement for John Deere 3029, 4045, and 6068 engines, forged steel with zinc-nickel finish.</p> <ul> <li>Coordinates directly with serpentine belt, idler pulleys, and water pump during system-level engine overhaul to prevent misalignment-induced failures across the accessory drive circuit.</li> <li>Engine serial prefix confirmation ensures correct variant selection within the 4045/6068 family, where accessory bracket layouts differ across model generations.</li> <li>Overhaul kit contents and matched tolerances verified per your engine's rebuild history before dispatch.</li> </ul>
Belt Drive Systems
Belt Tensioner 6735884 | Matched Set for Bobcat T140 T180
<p><strong>Belt Tensioner 6735884 Pulley Assembly</strong>, forged AISI 1045 carbon steel hub with sealed 6203-2RS double-row angular contact bearings, induction hardened to HRC 58–62.</p> <ul> <li>Fits Bobcat T140, T180, T190, T550, T590 compact track loaders</li> <li>Addresses root-cause belt drive wear — tensioner, belt, and idler pulleys supplied as a matched engine-system set to align tolerances and prevent repeat failure within hundreds of hours</li> <li>Cross-reference 6711698 verified; confirm engine serial number to identify correct variant for your specific build</li> </ul> <p>Complete belt drive kit matching and overhaul content checklist reviewed per engine serial before dispatch.</p>
Belt Drive Systems
Belt Tensioner Replacement for Bobcat 873 S130 T190 Powertrain
<p><strong>6662997, 6702474, 6725212 Belt Tensioner Kit</strong> — complete fan-drive assembly including idler pulley, torsion spring, CNC-machined 6061-T6 aluminum arm, and SAE J200 Class B nitrile O-rings.</p> <ul> <li>Fits Bobcat skid steer and track loaders: S130, S220, S300, T190, T250, 873, and 25+ additional models</li> <li>608ZZ deep-groove bearing with double-lip nitrile seals rated IP54 for high-dust engine compartments</li> <li>ASTM A228 music wire spring heat-treated to Rockwell C47–50 for sustained high-cycle fatigue resistance</li> </ul> <p>Addresses the full belt-drive system during engine overhaul — matched tolerances across pulley, spring, and arm prevent premature re-failure from mismatched components. Kit contents verified against engine serial prefix before dispatch.</p> <ul> <li>6-month warranty covers all kit components</li> <li>Cross-reference only: 6662997, 6702474, 6725212</li> </ul>
Belt Drive Systems
Engine Grade Cooling Fan Belt Tensioner Kit 7302291 for Bobcat
<p><strong>7302291 Belt Tensioner Kit</strong> for Bobcat skid steer, track and all wheel loaders — cold-forged steel housing, matched to engine cooling fan belt drive systems.</p> <ul> <li>Fits Bobcat 653, 753, 863, S185, T200 and more (cross-reference only)</li> <li>Restores proper fan belt tension within the engine accessory drive; inspect belt, pulleys and water pump together during cooling system service</li> <li>Verify engine serial variant before ordering — rebuild history may affect pulley shaft fit</li> </ul> <p>Oversize and grade confirmed against engine rebuild records; matched components ship together.</p>
Belt Drive Systems
Engine Grade Belt Tensioner 04133543 – Fits DEUTZ TD2.9L4
<p><strong>Belt Tensioner 04133543, Forged SAE 1045 Steel, Sealed Double-Row Ball Bearings</strong> — compatible with DEUTZ D2.9 L4, TD2.9 L4, and TD2.9L04 engine belt drive systems.</p> <ul> <li>Replacing this tensioner during an engine overhaul requires matching it with the V-belt, adjacent idlers, and sealing components as a complete set, ensuring uniform tension and tolerance across the entire drive chain. System-level verification prevents premature re-failure caused by misalignment or worn companion parts.</li> <li>Quench-and-temper heat treatment and IP54-rated sealed bearings maintain performance under dust, oil mist, and thermal cycling typical in quarry, mining, and demolition environments.</li> <li>Overhaul kit contents cross-checked line by line before dispatch, matched to your specific engine serial variant and rebuild history.</li> </ul>