Hanchi Auto Parts
1W6446 Water Pump Suitable for Caterpillar 3204 High Quality
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1W6446 is a Caterpillar water pump OE number. Our replacement matches the same mounting and cooling specs, fits 3204 engines, and ships with a 4.52 kg net weight (4 pcs per carton). Cross numbers: 1W-2929, 1W5644, 2W-1223, 4N0660.
Which engines use the 1W6446 water pump?
The OE application list reads: 3204.
Match your engine model to the list and the pump will fit without rework.
What are the specifications of 1W6446?
| Parameter | Value |
| OE number | 1W6446 |
| 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 |
What part numbers interchange with 1W6446?
Depending on the catalog you use, the same pump shows up as:
- 1W-2929
- 1W5644
- 2W-1223
- 4N0660
Packing and quality checks
For shipping estimates, count on 4 pumps per carton (20.10 kg, 38.5 x 32 x 16.5 cm).
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 1W6446 fit?
1W6446 fits 3204 engines. It is a Caterpillar application water pump, and our aftermarket unit replaces it directly.
What other part numbers replace 1W6446?
1W6446 interchanges with 1W-2929, 1W5644, 2W-1223, 4N0660. All of these refer to the same water pump assembly.
Is 1W6446 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 1W6446 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 1W6446 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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