Hanchi Auto Parts
729428-42004 Water Pump Suitable for Yanmar 4TNE88T PC40-7 High Quality
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729428-42004 belongs to the Yanmar;John Deere cooling system parts family. The pump sits on 4TNE88T, PC40-7, 4D84 and other listed engines. Our aftermarket equivalent follows the OE dimensions and passes air-tightness testing under a negative pressure of 0.1 MPa. It also replaces 129002-42004, 729428-42003, AM878201, AM879651, AM880905.
Which engines use the 729428-42004 water pump?
This pump was designed for 4TNE88T; PC40-7; 4D84.
If your engine tag matches any entry above, this pump is the right replacement.
What are the specifications of 729428-42004?
| Parameter | Value |
| OE number | 729428-42004 |
| Fits brand | Yanmar;John Deere |
| TO Shaft head height | 126.4 |
| Mounting hole position | Aligned to OE mounting points |
| Flange thread | 4-M6X1 |
| TO Flange height | 124.9 |
| Flange jumping | 0.07 |
| TO Impeller height Ⅰ | 0.8 |
| 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 | YA123-WD-1 |
| Net weight of one | 1.30 |
| Net weight | 1.30 kg |
| Packing | 8 pcs/ctn, 13.00 kg gross |
What part numbers interchange with 729428-42004?
Parts books from different markets list this pump under several numbers. All of them point to the same unit:
- 129002-42004
- 729428-42003
- AM878201
- AM879651
- AM880905
Packing and quality checks
Logistics data: 8 pcs/ctn, 13.00 kg gross, 38.5 x 32 x 31.5 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 729428-42004 fit?
729428-42004 fits 4TNE88T, PC40-7, 4D84 and other listed engines. It is a Yanmar;John Deere application water pump, and our aftermarket unit replaces it directly.
What other part numbers replace 729428-42004?
729428-42004 interchanges with 129002-42004, 729428-42003, AM878201, AM879651, AM880905. All of these refer to the same water pump assembly.
Is 729428-42004 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 729428-42004 water pump weigh?
One pump weighs 1.30 kg net. A full carton of 8 pieces comes to 13.00 kg gross.
How do I confirm 729428-42004 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.
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