125-2989 Water Pump restores E312B coolant circulation for B2B excavator parts repair, engine overhaul, replacement stock, and wholesale sourcing.
The 125-2989 Water Pump YNF16468 is supplied for compatible E312B excavator engine cooling systems. Coolant is circulated through the engine and corresponding heat-dissipation components so operating heat can be continuously transferred away from critical engine areas.
Water pumps operate under continuous rotational load, coolant exposure, and repeated temperature cycles. Leakage around the shaft or housing, abnormal bearing noise, excessive shaft movement, damaged drive components, or insufficient coolant circulation can indicate that the original pump requires inspection or replacement.
For B2B buyers, the 125-2989 E312B water pump should be verified by part number, machine model, mounting-hole pattern, coolant-port arrangement, drive-side configuration, pulley interface where applicable, and existing-pump photos. The exact engine model and accessory configuration have not been supplied, so physical comparison is recommended before bulk purchasing. Accurate verification helps reduce incorrect inventory, installation delays, customer claims, and unnecessary repeat freight.
| Parameter | Specification |
|---|---|
| YNF Part Number | YNF16468 |
| Part Number | 125-2989 |
| Product Name | Engine Water Pump |
| Alternative Name | Coolant Pump / Cooling Water Pump / Engine Cooling Pump |
| Product Type | Engine Coolant Circulation Pump |
| Parts Category | Excavator Engine Cooling Parts |
| Machine Reference | E312B |
| Engine Model | To Be Confirmed |
| Main Function | Circulates Coolant Through the Engine Cooling System |
| Application | Excavator Diesel Engine Cooling Circuit |
| Installation | Engine Cooling System |
| Working Medium | Engine Coolant |
| Drive Configuration | To Be Confirmed |
| Pulley Configuration | To Be Confirmed |
| Gasket Inclusion | To Be Confirmed |
| Material | To Be Confirmed |
| Fitment Check | Part Number / Machine Model / Mounting Pattern / Coolant Ports / Drive Side / Existing Pump Photo |
| Quality Type | Aftermarket Replacement |
| Condition | New |
| Brand | YNF |
| Origin | China |
| MOQ | 1 Piece |
| Shipping Method | Air, Sea, Express |
| Payment Terms | T/T, PayPal, Western Union |
| Application | Description |
|---|---|
| E312B Excavator | Used in compatible engine cooling configurations |
| Engine Cooling Circuit | Maintains coolant movement through the system |
| Water Pump Replacement | Suitable when leakage or mechanical wear is detected |
| Cooling System Overhaul | Can be renewed during broader cooling-system servicing |
| Engine Rebuilding | Suitable for replacement during major engine repair |
| Overheating Inspection | Pump condition can be checked during cooling diagnosis |
| Fleet Maintenance | Practical for scheduled excavator maintenance |
| B2B Parts Stocking | Suitable for dealers, wholesalers, and repair suppliers |
Q: Which machine is referenced?
A: The supplied machine reference is E312B.
Q: What does the water pump do?
A: It circulates coolant through the compatible engine cooling circuit.
Q: Is the exact engine model confirmed?
A: No. The engine and pump configuration should be checked against the existing component.
YNF Machinery supplies 125-2989 water pumps and related E312B engine cooling parts for excavator workshops, engine rebuilders, machinery dealers, wholesalers, fleet operators, and international importers.
The YNF16468 E312B water pump is a fitment-sensitive engine component. For professional B2B buyers, the part number should be checked together with mounting-hole positions, coolant connections, drive-side structure, pulley arrangement, and overall pump configuration before quantity purchasing.
Buyers can provide the 125-2989 part number, E312B machine information, required quantity, pump dimensions, mounting-side photos, drive-side photos, and clear images of the removed pump for fitment confirmation.
Radiators, thermostats, radiator hoses, cooling fans, fan hubs, belts, pulleys, radiator caps, and other E312B cooling-system components can also be consolidated into the same inquiry to simplify purchasing and reduce fragmented international shipping costs.
