Hanchi Auto Parts
729428-42003 Water Pump Suitable for Yanmar 4TNE88T PC40-7 High Quality
Couldn't load pickup availability
729428-42003 is how Yanmar;John Deere lists this water pump. It serves 4TNE88T, PC40-7, 4D84 and other listed engines. Our version copies the OE mounting pattern and impeller geometry, so it drops in without modification. Cross-reference: 129002-42004, 729428-42004, AM878201, AM879651, AM880905.
Which engines use the 729428-42003 water pump?
This pump was designed for 4TNE88T; PC40-7; 4D84.
When in doubt, compare the old pump pulley height against our spec table below — it settles most fitment questions.
What part numbers interchange with 729428-42003?
Depending on the catalog you use, the same pump shows up as:
- 129002-42004
- 729428-42004
- AM878201
- AM879651
- AM880905
What are the specifications of 729428-42003?
| Parameter | Value |
| OE number | 729428-42003 |
| 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 |
Packing and quality checks
Each pump is packed individually; a master carton holds 8 pieces at 13.00 kg gross.
Air-tightness is checked pump by pump under a negative pressure of 0.1 MPa before packing.
Frequently asked questions
What vehicles or engines does 729428-42003 fit?
729428-42003 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 729428-42003?
729428-42003 interchanges with 129002-42004, 729428-42004, AM878201, AM879651, AM880905. All of these refer to the same water pump assembly.
Is 729428-42003 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 729428-42003 water pump weigh?
One pump weighs 1.30 kg net. A full carton of 8 pieces comes to 13.00 kg gross.
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
Our company understands the challenges of bringing some special parts from paper to reality. Therefore, we offer our services to customers that need help.