A-Premium Water Pump with Thermostat for GM 4.8/5.3/6.0L — Includes Gasket & Pulley

A-Premium Water Pump (with thermostat) is a direct-replacement cooling pump assembly engineered to restore proper coolant circulation for many GM 4.8L, 5.3L and 6.0L engines.

This all-in-one water pump kit includes the pump, gasket, pulley and mounting bolt to simplify installation on compatible Chevrolet, GMC, Cadillac, Buick, Hummer, Isuzu and Workhorse models. Built from corrosion-resistant materials with strong sealing properties and abrasion-resistant components, the assembly is intended as a like-for-like replacement for worn or leaking factory pumps. It is sold as a single boxed unit and covered by A-Premium's one-year unlimited-mileage guarantee.

Which vehicles does this A-Premium pump fit?

The pump is designed for a broad range of GM platforms using 4.8L, 5.3L and 6.0L engines from model years roughly 2007–2019, including full-size trucks, SUVs and some commercial vehicles. Fitment includes Silverado, Sierra, Tahoe, Suburban, Yukon, Avalanche, Express vans, and others listed below. Always verify the OEM reference numbers and compare with your vehicle before purchase.

• Chevrolet: Silverado 1500/2500/3500, Tahoe, Suburban, Avalanche, Express series, Trailblazer
• GMC: Sierra 1500/2500/3500, Yukon, Canyon, Savana series
• Cadillac/Buick/Hummer/Isuzu/Workhorse: Escalade variants, Rainier, H2/H3, 9-7x, NPR trucks, W-series
• Reference numbers: AW6009, 12600767, 12681417, 19208815, 19253263

How does the included thermostat and gasket improve installation?

Receiving a pump that already includes the thermostat and gasket reduces parts hunting and lowers the risk of installation errors from mismatched components. The matched gasket and pulley assure proper sealing and belt alignment, while the supplied bolt is sized for the original mounting points to simplify fitment.

• Comes with gasket to prevent coolant leakage at the housing interface
• Supplied pulley matches factory belt engagement and alignment
• Included bolt reduces need to reuse old fasteners that can fail

What materials and features help this pump resist corrosion and wear?

The A-Premium pump uses durable materials and protective finishes to stand up to coolant chemistry and road conditions. Design emphasis on abrasion resistance and robust sealing helps minimize leaks and premature wear when installed correctly and maintained with proper coolant.

• Anti-corrosion surfaces to extend service life in mixed-metal cooling systems
• Reinforced sealing surfaces to reduce the chance of seepage under pressure
• Impact-resistant housing to tolerate vibration and debris exposure

Will this part meet my expectations for replacement quality?

This assembly is marketed as a direct replacement built to exacting tolerances suitable for routine repair and maintenance. A-Premium provides a one-year unlimited-mileage guarantee, reflecting confidence in materials and manufacturing that meet or approach OEM standards.

• Packaged in a box with all necessary components for a single replacement
• Manufactured to consistent tolerances for fitment and function
• Backed by a one-year unlimited-mileage guarantee from A-Premium

Who is this for: Technicians, DIY mechanics and fleet owners replacing a failed or leaking water pump on GM 4.8L/5.3L/6.0L engines who want an all-in-one kit that eliminates searching for separate thermostat, gasket or pulley parts. Confirm compatibility against your vehicle's year, model and OEM reference numbers before ordering to ensure correct fitment.