Hanchi Auto Parts
AM878201 Water Pump Suitable for Yanmar 4TNE88T PC40-7 High Quality
Couldn't load pickup availability
If your parts book shows AM878201, you need a water pump for 4TNE88T, PC40-7, 4D84 and other listed engines. Ours is a matching replacement — same mounting holes, same belt pulley height, pressure-tested before packing. Related OE numbers include 129002-42004, 729428-42003, 729428-42004, AM879651, AM880905.
Which engines use the AM878201 water pump?
This pump was designed for 4TNE88T; PC40-7; 4D84.
Match your engine model to the list and the pump will fit without rework.
What are the specifications of AM878201?
| Parameter | Value |
| OE number | AM878201 |
| 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 AM878201?
One pump, many part numbers. The full cross list:
- 129002-42004
- 729428-42003
- 729428-42004
- AM879651
- AM880905
Packing and quality checks
Each pump is packed individually; a master carton holds 8 pieces at 13.00 kg gross.
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 AM878201 fit?
AM878201 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 AM878201?
AM878201 interchanges with 129002-42004, 729428-42003, 729428-42004, AM879651, AM880905. All of these refer to the same water pump assembly.
Is AM878201 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 AM878201 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 AM878201 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
Our company understands the challenges of bringing some special parts from paper to reality. Therefore, we offer our services to customers that need help.