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Caterpillar 2W-8001 is the gear driven engine water pump with drive gear, bearing and impeller housing. It is used on Caterpillar 3304 and 3306 engines. This aftermarket version is made to the same mounting and connections as the original, so it fits where the old one came off.
The same part is also sold as Caterpillar 172-7767, Caterpillar 7N-5909 and Caterpillar 155-0068.
Sold as one unit. Check the number on your old part, or in the parts manual for your machine, before ordering.
| Part Type | Water Pump |
| Replaces | Caterpillar 2W-8001 |
| Drive | Gear driven |
| Cross references | Caterpillar 172-7767, Caterpillar 7N-5909, Caterpillar 155-0068 |
| Fits | Caterpillar 3304, 3304B, 3306, 3306B and G3306 engines, including CAT 966F Series II and 970F wheel loaders, 973 track loaders and 627E and 627F scrapers |
| Condition | New, aftermarket |
| Stat. HS-Code | 841330 |
| Country of Manufacture | China |
Caterpillar machines
Check the part number on your old unit before ordering.
| Caterpillar Part No.(SPM Part No.) | Fits |
|---|---|
| 2W-8001(SPM-HEP-4324) | Caterpillar 3304, 3304B, 3306, 3306B and G3306 engines, including CAT 966F Series II and 970F wheel loaders, 973 track loaders and 627E and 627F scrapers |
| Brand | Part No. |
|---|---|
| Caterpillar | 2W-8001 (this page, SPM-HEP-4324) |
| Caterpillar | 172-7767 |
| Caterpillar | 7N-5909 |
| Caterpillar | 155-0068 |
All of these numbers are the same part.
Coolant leak from the weep hole
Coolant dripping from the pump body means the seal has failed. Replace the pump before the engine runs low and overheats.
Overheating
A worn impeller moves less coolant. If the engine runs hot with a good thermostat and radiator, check the pump.
Bearing noise or play
A rumble or play at the pulley means the bearing is worn and the seal will follow.
Service at the same time
Change the thermostat, belts and coolant while the pump is off.
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller | Price | Checked |
|---|---|---|
| eBay, aftermarket seller | USD 229.97 | 25 Oct 2026 |
| Amazon (MARCH PARTS) | USD 248.77 | 25 Oct 2026 |
| FridayParts | USD 271.95 | 25 Oct 2026 |
| Amazon (G T Engine Parts) | USD 326.91 | 25 Oct 2026 |
| Amazon (CarTech Direct Parts) | USD 353.69 | 25 Oct 2026 |
| Raney's Truck Parts | USD 415.90 | 25 Oct 2026 |
| Spare Part Mart | USD 134.73 | Today |
Our price of USD 134.73 is 41% to 68% less than these sellers.
Found this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our Price Beat Guarantee. Every order is also covered by our 30 day money back guarantee.
No. It is an aftermarket part made to fit in place of Caterpillar 2W-8001. It is not made by or affiliated with Caterpillar; the Caterpillar part number is used only to show what it replaces.
It fits Caterpillar 3304, 3304B, 3306, 3306B and G3306 engines, including CAT 966F Series II and 970F wheel loaders, 973 track loaders and 627E and 627F scrapers. Machines change parts between serial number ranges, so check the number on your old part or in your parts manual.
It is made to the same mounting and connections as the original part. Fit new gaskets and seals where they are used, and check for leaks and correct operation before putting the machine back to work.
Yes, we ship worldwide. Shipping is calculated at checkout, and every order is covered by our 30 day money back guarantee and price beat guarantee.
Prices depend on your ZIP or postcode.
Live rates for the quantity selected, delivered to your door. Confirmed at checkout.
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