Performance Water Pump Kit for Chevrolet Avalanche (2007-2013) 5.3L 6.0L

Heavy-Duty Performance Water Pump Kit for 2007-2013 Chevrolet Avalanche (GMT900)

What it Does: The Performance Water Pump Kit replaces the failure-prone factory coolant pump and thermostat on the 2007-2013 Avalanche to restore precise thermal regulation and prevent severe overheating under heavy hauling conditions.

The Stock Chevrolet Avalanche Cooling Deficiencies

The factory cooling system on the GMT900 platform is notorious for mechanical weep-hole leakage and internal unit bearing failure over extended run cycles. On high-mileage Vortec 5.3L (LY5/LMG/LC9) and 6.0L (L76) engines, cyclical heat soak causes the factory unitized shaft seal to harden and crack. Concurrently, factory thermostat housings are vulnerable to mating-surface micro-warping, resulting in persistent coolant seepage, dangerous cavitation around the impeller vanes, and compromised thermal transfer during severe towing duty cycles.

The Engineering Solution

Engineered for sustained thermal stress, this high-flow water pump assembly features a reinforced die-cast aluminum housing paired with heavy-duty dual-row bearings to counteract high-RPM radial loads. An upgraded mechanical carbon-ceramic shaft seal prevents fluid penetration into the bearing race, while the precision-stamped impeller maintains steady coolant velocity without cavitation. Supplying direct-fit OE interchange for 12681417, 12600767, and AW6009, this kit integrates fresh application-specific elastomeric gaskets and a calibrated thermostat assembly to establish a leak-free hydraulic seal.

What's Included

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

Technical Specifications

Compatibility

• 2007-2013 Chevrolet Avalanche 5.3L V8 (LS Gen IV Vortec)
• 2007-2009 Chevrolet Avalanche 6.0L V8 (LS Gen IV Vortec)

Frequently Asked Questions & Fitment Warnings

Does this fit the GMT900 Avalanche?

Yes, this is a direct fit for the 2007-2013 Chevrolet Avalanche equipped with the 5.3L or 6.0L Gen IV Small Block V8 engine.

Do I need to bleed the cooling system after installing this pump?

Yes, thorough cooling system burping is required to purge trapped air from the cylinder heads and verify proper thermostat cycling at operating temperature.

The Chevrolet Durability Standard

Engineered to meet rigorous truck-grade standards, this cooling assembly ensures maximum thermal control and towing reliability whether handling heavy payload runs or high-mileage utility work.