Hanchi Auto Parts
129001-42002 Water Pump Suitable for Yanmar 4D84-2 4D89-2 High Quality
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The OE number 129001-42002 identifies a water pump fitted to 4D84-2, 4D89-2, 4TNV98 and other listed engines. We stock a direct replacement built to the same shaft and pulley heights. One pump weighs 2.10 kg; a full carton holds 4.
Which engines use the 129001-42002 water pump?
You will find this pump on 4D84-2; 4D89-2; 4TNV98; 4TNV88; 3TNV88.
If your engine tag matches any entry above, this pump is the right replacement.
What are the specifications of 129001-42002?
| Parameter | Value |
| OE number | 129001-42002 |
| Fits brand | Yanmar |
| TO Shaft head height | 131.3 |
| Mounting hole position | Aligned to OE mounting points |
| Threads on the pump body | 3-M8X1.25 |
| Flange thread | 4-M6X1 |
| TO Flange height | 126.3 |
| Flange jumping | 0.07 |
| TO Impeller height Ⅰ | 0.5 |
| 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 | O35X2 |
| Net weight | 2.10 kg |
| Packing | 4 pcs/ctn, 11.00 kg gross |
What part numbers interchange with 129001-42002?
Parts books from different markets list this pump under several numbers. All of them point to the same unit:
- 129001-42004
- 129004-42000
- 129100-42004
Packing and quality checks
Logistics data: 4 pcs/ctn, 11.00 kg gross, 58 x 44 x 21 cm.
Every pump leaves the line after a leak test at a negative pressure of 0.1 MPa. No leaks, no exceptions.
Frequently asked questions
What vehicles or engines does 129001-42002 fit?
129001-42002 fits 4D84-2, 4D89-2, 4TNV98 and other listed engines. It is a Yanmar application water pump, and our aftermarket unit replaces it directly.
What other part numbers replace 129001-42002?
129001-42002 interchanges with 129001-42004, 129004-42000, 129100-42004. All of these refer to the same water pump assembly.
Is 129001-42002 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 129001-42002 water pump weigh?
One pump weighs 2.10 kg net. A full carton of 4 pieces comes to 11.00 kg gross.
How do I confirm 129001-42002 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.
Send us the OE number and your engine model — we confirm fitment before you order.
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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