Hanchi Auto Parts
721250-42700 Water Pump Suitable for Yanmar YM1700 High Quality
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The OE number 721250-42700 identifies a water pump fitted to YM1700 engines. We stock a direct replacement built to the same shaft and pulley heights. One pump weighs 0.90 kg; a full carton holds 8.
Which engines use the 721250-42700 water pump?
You will find this pump on YM1700.
When in doubt, compare the old pump pulley height against our spec table below — it settles most fitment questions.
What are the specifications of 721250-42700?
| Parameter | Value |
| OE number | 721250-42700 |
| Fits brand | Yanmar |
| TO Impeller height Ⅱ | 0.5 |
| TO Shaft head height | 109.8 |
| Mounting hole position | Aligned to OE mounting points |
| Flange thread | 4-M6X1 |
| TO Flange height | 109.8 |
| Flange jumping | 0.07 |
| 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 | YA104-WD-1 |
| Net weight of one | 0.90 |
| Net weight | 0.90 kg |
| Packing | 8 pcs/ctn, 9.20 kg gross |
Packing and quality checks
Each pump is packed individually; a master carton holds 8 pieces at 9.20 kg gross.
Before boxing, each pump passes a negative-pressure leak check and a hand-rotation check for smooth, noise-free bearing movement.
Frequently asked questions
What vehicles or engines does 721250-42700 fit?
721250-42700 fits YM1700 engines. It is a Yanmar application water pump, and our aftermarket unit replaces it directly.
Is 721250-42700 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 721250-42700 water pump weigh?
One pump weighs 0.90 kg net. A full carton of 8 pieces comes to 9.20 kg gross.
How do I confirm 721250-42700 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.
Message us with the OE number off your old pump. We reply with fitment confirmation and a price the same day.
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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