Performance Water Pump Kit for Chevrolet Silverado 2500 HD,3500 HD (2007-2019) 6.0L

Heavy-Duty Water Pump Kit for 2007-2019 Chevrolet Silverado 2500 HD, 3500 HD (GMT900 / K2XX)

What it Does: The Performance Water Pump Kit replaces the failure-prone factory cooling pump and thermostat on 2007-2019 Chevrolet Silverado 2500 HD and 3500 HD trucks to maintain consistent coolant circulation and prevent thermal runaway under heavy hauling conditions.

The Stock Chevrolet Silverado HD Cooling Vulnerabilities

Factory cooling systems on the heavy-duty GMT900 and K2XX platforms face intense thermal cycling, especially when pulling sustained payloads. The stock water pump mechanical shaft seals degrade over time, leading to weeping coolant leaks from the weep hole, premature bearing play, and eventual impeller slippage. Furthermore, the OEM thermostat assembly suffers from spring fatigue and stiction, preventing proper coolant bypass to the radiator and driving operating temperatures into critical zones.

The Engineering Solution

This direct replacement water pump assembly utilizes a heavy-duty cast aluminum housing engineered for maximum thermal heat dissipation. Internally, a precision-balanced impeller maximizes coolant flow rates through the block and heads without cavitating at elevated RPMs. High-temperature unitized mechanical shaft seals and heavy-duty dual-row bearings prevent fluid migration and runout under drive-belt loads. Supplied with high-grade replacement gaskets and a pre-calibrated thermostat housing, this kit delivers reliable cooling line pressure and restores tight closed-loop thermal control.

What's Included

• 1 Engine Water Pump
• 1 Thermostat Housing
• 1 Thermostat
• 2 Rectangular Gaskets
• 1 Oval Gasket
• 2 Mounting Bolts

Technical Specifications

Compatibility

• 2007-2019 Chevrolet Silverado 2500 HD 6.0L V8
• 2007-2019 Chevrolet Silverado 3500 HD 6.0L V8

Frequently Asked Questions & Fitment Warnings

Does this fit the GMT900 and K2XX Silverado HD?

Yes, this is a direct bolt-on fit for the 2007-2019 Chevrolet Silverado 2500 HD and 3500 HD equipped with the 6.0L V8 engine; verify your engine displacement before purchasing as it does not fit 6.6L Duramax diesel models.

What torque specification should be used for the water pump mounting bolts?

Tighten the water pump mounting bolts to the factory GM specification in two passes—11 lb-ft on the first pass and 22 lb-ft on the final pass—to ensure an even gasket seal.

The Chevrolet Heavy-Duty Caliber

Silverado HD trucks are purpose-built to shoulder demanding industrial payloads and severe-duty towing cycles. This water pump upgrade ensures your 6.0L powertrain sustains steady operating temperatures whether idling at job sites or climbing highway grades under gross vehicle weight limits.