Hanchi Auto Parts
2W8003 Water Pump Suitable for Caterpillar CAT3306 3304 High Quality
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2W8003 belongs to the Caterpillar cooling system parts family. The pump sits on CAT3306, 3304, 140G and other listed engines. Our aftermarket equivalent follows the OE dimensions and passes air-tightness testing under a negative pressure of 0.1 MPa. It also replaces 1727772.
Which engines use the 2W8003 water pump?
Fitment covers CAT3306; 3304; 140G.
When in doubt, compare the old pump pulley height against our spec table below — it settles most fitment questions.
What part numbers interchange with 2W8003?
One pump, many part numbers. The full cross list:
- 1727772
What are the specifications of 2W8003?
| Parameter | Value |
| OE number | 2W8003 |
| Fits brand | Caterpillar |
| Mounting hole position | Aligned to OE mounting points |
| Threads on the pump body | 2-3/8-16UNC |
| TO Gear height | 33.5 |
| 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 |
| Number of Teeth | 40 |
| Included Component 1 | O135X3.5 |
| Included Component 2 | Z-G3-4 |
| Included Component 3 | CA103-WD-1 |
| Net weight | 14.00 kg |
| Packing | 1 pcs/ctn, 15.60 kg gross |
Packing and quality checks
Each pump is packed individually; a master carton holds 1 pieces at 15.60 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 2W8003 fit?
2W8003 fits CAT3306, 3304, 140G and other listed engines. It is a Caterpillar application water pump, and our aftermarket unit replaces it directly.
What other part numbers replace 2W8003?
2W8003 interchanges with 1727772. All of these refer to the same water pump assembly.
Is 2W8003 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 2W8003 water pump weigh?
One pump weighs 14.00 kg net. A full carton of 1 pieces comes to 15.60 kg gross.
Bulk pricing starts at one carton. Ask for a quote with your target quantity.
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.