2128179 Shaft Fits Caterpillar Models
2128179 Shaft Fits Caterpillar Models
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One New Aftermarket Replacement Water Pump Shaft for Caterpillar (Cat) Engines and Equipment
This aftermarket replacement water pump shaft (OEM part number 212-8179) is a component of the auxiliary water pump assembly on Caterpillar 3500-series and 3056 engines. It serves as a critical rotating element within the cooling system pump, transferring drive to maintain proper coolant circulation. Compatible with a wide range of Cat engine-powered machines, generator sets, and off-highway trucks.
Specifications
- Weight: approximately 1.9 lbs
- Application: Auxiliary water pump shaft
Compatible Models
Caterpillar Engines: 3056, 3508, 3508B, 3508C, 3512, 3512B, 3512C, 3516, 3516B, 3516C
Caterpillar Off-Highway Trucks: 776C, 776D, 777, 777B, 777C, 777D, 784C, 785, 785B, 785C, 785D, 789B, 789C, 789D
Caterpillar Large Mining & Loading Equipment: 5130B, 5230B, 854G, 992G, 994, 994D, 994F, 994H
Caterpillar Generator Sets: SR4, SR4B, SR4BHV
Replaces Part Number(s):
2128179, 212-8179
Aftermarket Interchange Numbers
CA2128179
New aftermarket replacement part - not remanufactured, not used.



