2128187 Impeller Fits Caterpillar Models
2128187 Impeller Fits Caterpillar Models
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One New Aftermarket Replacement Water Pump Impeller for Caterpillar (Cat) 3500 Series Engines
This aftermarket replacement impeller fits the auxiliary water pump on Caterpillar 3500 Series engines, including the 3508, 3512, and 3516 engine families. The impeller is a key rotating component inside the water pump that drives coolant circulation through the engine cooling system. Proper impeller condition is critical to preventing overheating in heavy-duty construction, mining, and industrial equipment powered by these large-displacement Cat engines.
Specifications
- Weight: 6.8 lbs.
- Application: Auxiliary water pump impeller
- Alternate part number format: 212-8187
Compatible Models
Caterpillar 3500 Series Engines: 3508, 3508B, 3508C, 3512, 3512B, 3512C, 3516B
Caterpillar Gas Engines: G3508, G3512
Caterpillar Off-Highway Trucks: 776C, 776D, 777, 777B, 777C, 777D, 795F AC, 795F XQ
Caterpillar Mining Shovels / Large Equipment: 5130, 5130B, 854G, 992G
Caterpillar Dozers: D11N, D11R
Caterpillar Power Modules: PM3508
Replaces Part Number(s):
2128187, 212-8187
New aftermarket replacement part - not remanufactured, not used.



