Hanchi Auto Parts
129900-42055 Water Pump Suitable for Yanmar WITHOUT PIPE S4D94E High Quality
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129900-42055 is how Yanmar lists this water pump. It serves WITHOUT PIPE and S4D94E engines. Our version copies the OE mounting pattern and impeller geometry, so it drops in without modification. Cross-reference: 129900-42001, 129900-42050, 129900-42053, 129900-42054, 6132-61-1616.
Which engines use the 129900-42055 water pump?
The OE application list reads: WITHOUT PIPE; S4D94E.
When in doubt, compare the old pump pulley height against our spec table below — it settles most fitment questions.
What are the specifications of 129900-42055?
| Parameter | Value |
| OE number | 129900-42055 |
| Fits brand | Yanmar |
| TO Shaft head height | 122.2 |
| Mounting hole position | Aligned to OE mounting points |
| Threads on the pump body | 4-M8X1.25 |
| Flange thread | 4-M8X1.25 |
| TO Flange height | 106.5 |
| Flange jumping | 0.07 |
| TO Impeller height Ⅰ | 0.7 |
| 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 | O55X3.1 |
| Net weight | 2.80 kg |
| Packing | 4 pcs/ctn, 13.20 kg gross |
What part numbers interchange with 129900-42055?
Parts books from different markets list this pump under several numbers. All of them point to the same unit:
- 129900-42001
- 129900-42050
- 129900-42053
- 129900-42054
- 6132-61-1616
Packing and quality checks
Each pump is packed individually; a master carton holds 4 pieces at 13.20 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 129900-42055 fit?
129900-42055 fits WITHOUT PIPE and S4D94E engines. It is a Yanmar application water pump, and our aftermarket unit replaces it directly.
What other part numbers replace 129900-42055?
129900-42055 interchanges with 129900-42001, 129900-42050, 129900-42053, 129900-42054, 6132-61-1616. All of these refer to the same water pump assembly.
Is 129900-42055 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 129900-42055 water pump weigh?
One pump weighs 2.80 kg net. A full carton of 4 pieces comes to 13.20 kg gross.
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.