Thermostat
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Thermostat
18 items
Lubrication & Cooling Systems
Kubota D1105-Compatible Thermostat 6680512 – Overhaul Component
<p><strong>6680512 Thermostat – 82°C ±1.5°C Opening, Brass Housing</strong> — replacement for Kubota D1105, D1305, V1505 and Bobcat 753 engine cooling systems.</p> <ul> <li>Wax element calibrated for stable break-in thermal profile across D-series and V-series rebuilds</li> <li>±0.1 mm dimensional tolerance for drop-in fit with no housing modification required</li> <li>Pair with water pump, radiator hoses, and gasket from the same shipment to eliminate cooling circuit gaps</li> </ul> <p>Overhaul kit contents verified item-by-item before dispatch to match your engine serial and build variant.</p>
Lubrication & Cooling Systems
Engine Grade Thermostat 15321-73010 for Kubota D902 D1105 D1302
<p><strong>Thermostat 15321-73010, 160°F / 71°C, Nitrile Rubber Gasket</strong> — replacement for Kubota D902, D1105, D1302 through D1703 engine platforms.</p> <ul> <li>Wax-pellet actuator opens at 71°C, matching thermal hysteresis for Kubota cooling systems</li> <li>Replace alongside housing seals, bypass gaskets, and hoses to prevent coolant leaks after repeated thermal cycles</li> <li>Cross-reference numbers 19434-73010, 19434-73013, 15321-73014 verified for engine serial compatibility</li> </ul> <p>Overhaul kit contents checked item-by-item against your engine build before dispatch.</p>
Lubrication & Cooling Systems
Engine Grade Thermostat 3917324 Replacement for Cummins 4B 6B
<p><strong>3917324 Thermostat</strong> with gasket and machined brass bushing, opening at 82°C for Cummins 4B3.9, 4BT3.9, 6BT5.9, and 6BTA5.9 engines (cross-reference: 3920336, 3923331).</p> <ul> <li>Supplied as a matched cooling system set — wax element calibrated to full flow at 90°C, bushing held to 0.02 mm radial clearance for reliable sealing after prior rebuilds.</li> <li>Replacing the thermostat without the gasket and bushing risks housing leaks and erratic coolant regulation; this kit addresses the root cause rather than the symptom alone.</li> </ul> <p>Overhaul kit contents verified item-by-item before dispatch, with quality inspection record and 6-month warranty included.</p>
Lubrication & Cooling Systems
Water Pump & Thermostat Kit Replacement for D1005/D1105 Powertrain
<p><strong>16251-73032 Water Pump & Thermostat Kit, 82°C Wax-Element</strong> — compatible with Kubota D1005, D1105, D905, D1305, V1305 and V1505 engines. </p> <ul> <li>Includes water pump, thermostat and nitrile gaskets rated to 150°C for ethylene glycol coolants </li> <li>Pump flow rate and thermostat opening threshold matched as a set, supporting full cooling-system overhaul rather than single-part swap </li> <li>Sealing surfaces held to ≤0.05 mm flatness, preventing coolant ingress past the gasket line </li> <li>Cross-reference: 16251-73030, 15531-73014, 15531-73010, 16851-73270 (interchange reference only) </li> </ul> <p>Matched components ship together so the rebuild bench stays on schedule.</p>
Lubrication & Cooling Systems
Thermostat 6680512 Replacement for Kubota D1105 Powertrain
<p><strong>Thermostat 6680512 engine coolant replacement</strong> — 82°C (±2°C) opening temperature, brass housing, wax-filled thermal element per JIS B 8201. Compatible with Kubota D1105, D1305, V2203 and Bobcat 753, S185, E27 engine families.</p> <ul> <li>Belongs to the lubrication & cooling system; matched gasket, coolant hoses, and radiator cap should be inspected together to resolve the root cause of overheating, not just the failed component</li> <li>Engine serial variants may require different opening points — confirm build before ordering</li> </ul> <p>Cross-reference numbers 6674172, 6653948, 3918235 verified; overhaul kit contents checked item-by-item before dispatch.</p>
Lubrication & Cooling Systems
System-Matched Thermostat 3917324 – Fits Cummins 4B/6B Series
<p><strong>Thermostat 3917324 for Cummins 4B/6B Series, 88°C ±2°C Wax-Pellet Actuation, Brass Housing</strong> — compatible with 4B3.9, 4BT3.9, 4BTA3.9, 6B5.9, 6BT5.9, and 6BTA5.9 engines.</p> <ul> <li>Engine cooling system rebuild component matched with silicone gasket and steel bushing for complete housing reseal, addressing flange seepage caused by incomplete kit replacement during overhaul.</li> <li>Cross-reference interchange: 3920336, 3923331.</li> </ul> <p>Overhaul kit contents verified against engine build requirements before dispatch.</p>
Lubrication & Cooling Systems
Thermostat 3917324 for Cummins 6BT5.9 – Engine Grade
<p><strong>Thermostat 3917324 for Cummins 4B & 6B Series, 82°C ±2°C Opening, Wax-Element Actuation</strong> — compatible with 4B3.9, 4BT3.9, 6BT5.9, and 6BTA5.9 engines in hydraulic excavators, generator sets, and quarry haul trucks.</p> <ul> <li>Kit includes thermostat, silicone rubber gasket (cross-reference 3920336), and aluminum bushing (cross-reference 3923331) as a matched set for correct thermal regulation during engine cooling system rebuild</li> <li>Brass housing resists ethylene glycol corrosion in tropical environments, while concentric bushing alignment eliminates coolant bypass that causes repeat overheating</li> </ul> <p>Opening temperature validation and seal integrity test record ship with every unit for rebuild-grade verification.</p>
Lubrication & Cooling Systems
Water Pump & Thermostat Kit for Kubota Engine – Engine Grade
<p><strong>16251-73032 & 15531-73014 Water Pump & Thermostat Kit</strong> — replacement for Kubota D1005, D1105, D905, D1305, V1305, V1505 engines.</p> <ul> <li>Engineered for complete cooling system refresh during overhaul, this matched kit prevents recurring overheating and collateral wear.</li> <li>Multi-layer steel gasket with nitrile coating ensures proper sealing at all mating surfaces.</li> <li>Compatible with B1700, B2100, B2400, B7500 series tractors and KX61-2 excavator.</li> </ul> <p>Matched components ship together with verified cross-reference numbers (16251-73030, 15531-73010, 16851-73270) for consistent rebuild tolerances.</p>
Lubrication & Cooling Systems
Matched Set Thermostat 6680512 Compatible with Kubota D902
<p><strong>6680512 Thermostat</strong> — replacement for Kubota D902, D1105, V1505 and Bobcat skid steer engines, valve calibration matched to OEM thermal specification</p> <ul> <li>Part of the engine cooling circuit — pair with water pump, radiator hoses, and coolant gaskets so the full thermal management system is refreshed in one overhaul pass</li> <li>Cross-reference interchange numbers 6674172, 6653948, 3918235 verified to confirm the correct variant for your engine serial range</li> </ul> <p>Overhaul kit contents checked item by item before dispatch to match your specific engine build.</p>
Lubrication & Cooling Systems
Thermostat 15321-73010 for Kubota D902 D1105 – Engine Grade
<p><strong>Thermostat 15321-73010 — Engine Cooling System Component</strong> for Kubota D902, D905, D1105 and related engine variants. 160°F (71°C) opening temperature, brass housing with stainless steel valve assembly and FPM seal.</p> <ul> <li>Critical for engine rebuild cooling system refresh — incorrect opening temperature causes overcooling or overheating, undermining the entire overhaul. Replace alongside water pump, radiator hoses, and gaskets during engine teardown to address system-level thermal balance.</li> <li>MOQ 1 piece; matched cooling system components ship as one consignment.</li> </ul>
Lubrication & Cooling Systems
Engine Grade Water Pump & Thermostat Kit – Fits Kubota D1005 D1105 D1305
<p><strong>16251-73032 Water Pump & Thermostat Kit, 82-88°C Opening</strong> — matches cooling circuit components for Kubota D1005, D1105, D1305, D905, V1305 and V1505 engines. Bundled pump, thermostat and housing gasket address the failure path together, preventing uneven coolant flow or seepage after partial repairs. Cross-reference verification covers superseded and alternate numbers across production serial variants. Overhaul kit contents confirmed item-by-item before dispatch.</p> <ul> <li>Fits KX61-2, B1700, B2100, B2400, B2710, B2910, BX2200, F2260, F2560, F3060</li> <li>ISO 9001 manufacturing, 3-12 month warranty</li> <li>MOQ 1 piece</li> </ul>
Lubrication & Cooling Systems
Rebuild Kit Thermostat 6680512 Compatible with Kubota and Bobcat Engines
<p>Oversize grades and matched cooling components confirmed against your engine rebuild records before shipment.</p>