Place of Origin:
China
Brand Name:
Cum-mins
Model Number:
QST30
Excavator Engine Parts Cooling Water Pump 5409320 4090031 4096427 for QST30
Prevent catastrophic engine overheating and extend the service life of your powered heavy equipment with this premium 12V140 heavy-duty cooling water pump, engineered as a direct OEM replacement for part numbers 5409320, 4090031 and 4096427. Designed specifically for the high-horsepower QST30 diesel engine, this pump delivers consistent high-volume coolant flow to maintain optimal operating temperatures even under continuous full-load conditions. Built to withstand the extreme heat, vibration and dust of construction and mining sites, it features a reinforced housing and precision-balanced impeller for maximum durability and efficiency. Every unit undergoes comprehensive pressure and leakage testing before shipment to ensure reliable, leak-free performance.
| Parameter | Specification |
|---|---|
| Product Name | Engine Cooling Water Pump Assembly |
| OEM Part Numbers | 5409320, 4090031, 4096427 |
| Compatible Engine | QST30 / 12V140 Diesel Engine |
| Application | Heavy-duty excavators, mining trucks, industrial equipment with QST30 engines |
| Drive Type | Gear-driven (top-mounted drive gear, matching engine camshaft drive) |
| Gear Teeth | 24 teeth (standard for QST30 engine) |
| Rated Flow | ~400-500 L/min (at rated engine speed) |
| Rated Speed | 2000–2200 rpm |
| Operating Pressure | 0.15–0.25 MPa |
| Seal Type | Mechanical seal (water-lubricated, high-temperature resistant) |
| Bearing Type | Heavy-duty double-row ball bearings |
| Housing Material | Cast iron (corrosion-resistant, high-pressure resistant) |
| Shaft Material | High-strength alloy steel |
| Mounting Type | Direct bolt-on fit (matches OEM mounting holes and flange) |
| Coolant Compatibility | Compatible with ethylene glycol-based antifreeze (coolant) |
| Certifications | RoHS, CE Compliant |
| Condition | New aftermarket replacement, pressure-tested |
| Key Features | High flow rate, durable mechanical seal, heavy-duty gear drive, corrosion-resistant housing, direct replacement |
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