Hanchi Auto Parts
22R51-0386 Water Pump Suitable for Kubota V2403 with pipe V2403-M-EU3 High Quality
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The OE number 22R51-0386 identifies a water pump fitted to V2403 with pipe, V2403-M-EU3, V2403-M-ES04 and other listed engines. We stock a direct replacement built to the same shaft and pulley heights. One pump weighs 1.14 kg; a full carton holds 6.
Which engines use the 22R51-0386 water pump?
You will find this pump on V2403 with pipe; V2403-M-EU3; V2403-M-ES04; V2403-M-ET05.
Match your engine model to the list and the pump will fit without rework.
What part numbers interchange with 22R51-0386?
Dealers and fleet systems quote this pump under more than one OE number:
- 1K321-73030
- 1K321-73031
- 26276068
What are the specifications of 22R51-0386?
| Parameter | Value |
| OE number | 22R51-0386 |
| Fits brand | Kubota |
| TO Impeller height Ⅱ | 20.7 |
| TO Shaft head height | 85.3 |
| Mounting hole position | Aligned to OE mounting points |
| Flange thread | M6X1 |
| TO Flange height | 80.9 |
| Flange jumping | 0.07 |
| Installation of water pipes | Water pipe fitted complete, no deformation |
| Air tightness testing | No leakage detected under negative pressure of 0.1 MPa |
| Appearance Ⅰ | Neutral finish, no third-party logos |
| Appearance Ⅱ | Clean surface: no dirt, rust or paint peeling |
| Assembly rotation | Turns freely by hand, no sticking or noise |
| Included Component 1 | KU101-WD-1 |
| Net weight | 1.14 kg |
| Packing | 6 pcs/ctn, 8.84 kg gross |
Packing and quality checks
For shipping estimates, count on 6 pumps per carton (8.84 kg, 56 x 34 x 31 cm).
We leak-test each unit at a negative pressure of 0.1 MPa, then spin it by hand to confirm free rotation.
Frequently asked questions
What vehicles or engines does 22R51-0386 fit?
22R51-0386 fits V2403 with pipe, V2403-M-EU3, V2403-M-ES04 and other listed engines. It is a Kubota application water pump, and our aftermarket unit replaces it directly.
What other part numbers replace 22R51-0386?
22R51-0386 interchanges with 1K321-73030, 1K321-73031, 26276068. All of these refer to the same water pump assembly.
Is 22R51-0386 available from stock?
Yes, this number is in regular production. Lead time for carton quantities is usually a few days; ask us for current stock before ordering.
How much does the 22R51-0386 water pump weigh?
One pump weighs 1.14 kg net. A full carton of 6 pieces comes to 8.84 kg gross.
How do I confirm 22R51-0386 is the pump I need?
Check the OE number stamped on your old pump or in the parts book, then compare engine model and pulley height with the spec table on this page. If anything is unclear, send us a photo of the old unit.
Bulk pricing starts at one carton. Ask for a quote with your target quantity.
Send the OE number, your quantity and your destination port — feel free to Contact Us. We reply with fitment confirmation and a quote.
OEM Avalible
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