Hanchi Auto Parts
1W5644 Water Pump Suitable for Caterpillar 3204 High Quality
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1W5644 belongs to the Caterpillar cooling system parts family. The pump sits on 3204 engines. Our aftermarket equivalent follows the OE dimensions and passes air-tightness testing under a negative pressure of 0.1 MPa. It also replaces 1W-2929, 1W6446, 2W-1223, 4N0660.
Which engines use the 1W5644 water pump?
This pump was designed for 3204.
If your engine tag matches any entry above, this pump is the right replacement.
What part numbers interchange with 1W5644?
Dealers and fleet systems quote this pump under more than one OE number:
- 1W-2929
- 1W6446
- 2W-1223
- 4N0660
What are the specifications of 1W5644?
| Parameter | Value |
| OE number | 1W5644 |
| Fits brand | Caterpillar |
| TO Impeller height Ⅱ | 47.4 |
| TO Shaft head height | 87.1 |
| Mounting hole position | Aligned to OE mounting points |
| Flange thread | M8X1.25 |
| TO Flange height | 64.5 |
| Flange jumping | 0.07 |
| 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 | CA122-WD-1 |
| Net weight of one | 4.52 |
| Net weight | 4.52 kg |
| Packing | 4 pcs/ctn, 20.10 kg gross |
Packing and quality checks
For shipping estimates, count on 4 pumps per carton (20.10 kg, 38.5 x 32 x 16.5 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 1W5644 fit?
1W5644 fits 3204 engines. It is a Caterpillar application water pump, and our aftermarket unit replaces it directly.
What other part numbers replace 1W5644?
1W5644 interchanges with 1W-2929, 1W6446, 2W-1223, 4N0660. All of these refer to the same water pump assembly.
Is 1W5644 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 1W5644 water pump weigh?
One pump weighs 4.52 kg net. A full carton of 4 pieces comes to 20.10 kg gross.
How do I confirm 1W5644 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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