S4S Water Pump maintains Mitsubishi diesel engine coolant circulation for B2B excavator parts repair, rebuilding, stocking, and wholesale sourcing.
The S4S Water Pump YNF17709 is supplied for compatible Mitsubishi S4S diesel engine cooling systems. Coolant is circulated through the engine and corresponding heat-dissipation components, allowing operating heat to be transferred away from temperature-sensitive engine areas.
Water pumps are subjected to continuous rotation, coolant exposure, vibration, and repeated thermal cycling. Leakage around the pump area, bearing noise, shaft movement, or reduced coolant circulation may indicate that the original pump requires inspection or replacement.
For B2B buyers, the Mitsubishi S4S engine water pump should be matched by engine model, mounting-hole pattern, coolant-port arrangement, drive-side structure, overall dimensions, and existing-pump photos. Since S4S engines can be installed in different types of industrial and construction equipment, engine-based and physical matching is recommended before bulk purchasing. This helps reduce incorrect inventory, installation delays, customer claims, and repeat international freight.
| Parameter | Specification |
|---|---|
| YNF Part Number | YNF17709 |
| Product Name | Engine Water Pump |
| Alternative Name | Coolant Pump / Cooling Water Pump / Diesel Engine Water Pump |
| Product Type | Engine Coolant Circulation Pump |
| Parts Category | Diesel Engine Cooling Parts |
| Engine Reference | Mitsubishi S4S |
| Main Function | Circulates Coolant Through the Engine Cooling Circuit |
| Application | Diesel Engine Cooling System |
| Installation | Engine Cooling System |
| Working Medium | Engine Coolant |
| Fitment Check | Engine Model / Mounting Pattern / Coolant Ports / Drive Side / Overall Dimensions / 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 |
|---|---|
| Mitsubishi S4S Engine | Used in compatible diesel engine cooling systems |
| Engine Rebuilding | Suitable for replacement during engine overhaul |
| Cooling System Repair | Used when the original pump is worn or leaking |
| Coolant Circulation Service | Supports coolant movement through the engine circuit |
| Overheating Inspection | Pump condition can be checked during cooling diagnosis |
| Preventive Maintenance | Suitable for planned engine cooling service |
| Machinery Repair Workshop | Practical for industrial and construction equipment servicing |
| B2B Parts Stocking | Suitable for dealers, wholesalers, and engine parts distributors |
Q: What is YNF17709?
A: It is an engine water pump for compatible Mitsubishi S4S diesel engine applications.
Q: What does the S4S water pump do?
A: It circulates coolant through the engine cooling circuit.
Q: Can it be used during an S4S engine rebuild?
A: Yes. It can be replaced during engine overhaul or cooling-system maintenance.
YNF Machinery supplies S4S water pumps and related Mitsubishi diesel engine cooling parts for machinery workshops, engine rebuilders, equipment dealers, wholesalers, fleet operators, and international importers.
The YNF17709 Mitsubishi S4S water pump is suitable for buyers maintaining repair stock for diesel engine servicing. Because S4S engines may be installed in different machines, fitment should be checked by engine model and physical pump configuration rather than equipment appearance alone.
Professional buyers can provide the YNF17709 reference, S4S engine information, machine model, required quantity, mounting-side photos, coolant-port arrangement, overall dimensions, and clear images of the removed pump for matching.
Thermostats, radiator hoses, cooling fans, pulleys, belts, oil cooler parts, gasket sets, and other S4S engine components can also be consolidated into the same order to simplify procurement and reduce fragmented international shipping costs.
