A-Premium Water Pump Assembly with Thermostat & Gasket — Direct-Fit for Chevy/GMC, One-Year Warranty

The A-Premium water pump assembly with integrated thermostat and gasket replaces your factory unit to restore coolant flow and proper engine temperature control in many Chevy, GMC and compatible vehicles.

This complete pump kit includes the housing, impeller, thermostat and gasket set packaged together to simplify replacement and reduce installation time. Designed as a direct-fit aftermarket unit for numerous GM platforms and related marques, the assembly is supplied with reference numbers that match common OE replacements so you can verify compatibility before purchase.

Which vehicles will this A-Premium pump fit?

The pump covers a long list of GM and compatible vehicles from late 1990s through mid-2000s model years, including light trucks, SUVs and vans. Fitment spans Chevrolet Silverado, Tahoe, Suburban, Avalanche and Express vans, plus GMC Sierra, Yukon and Savana models and select Buick, Cadillac, Hummer, Isuzu and Saab platforms. Use the provided reference numbers or cross-check your vehicle year and engine to confirm exact fitment.

• Chevrolet: Silverado, Tahoe, Suburban, Avalanche, Express, SSR, Trailblazer
• GMC: Sierra, Yukon, Envoy, Savana, W-series cab/chassis models
• Also fits: Cadillac Escalade, Buick Rainier, Hummer H2, Isuzu Ascender, Saab 9-7x

How does the assembled pump help restore cooling performance?

Replacing a worn or leaking pump restores coolant circulation and maintains stable operating temperatures, which supports consistent engine performance. The included thermostat ensures the correct flow timing, and the supplied gasket reduces the risk of coolant leaks at the mounting surface.

• Precision-matched impeller for efficient coolant movement
• Thermostat calibrated for correct warm-up and flow
• New gasket minimizes installation-stage leaks

What should I know about installation and compatibility checking?

This unit is built as a direct-replacement assembly; most users can follow factory removal steps and bolt the new assembly into place. Before ordering, compare the reference numbers and vehicle list to your OEM part or service manual to confirm match. Professional installation is recommended if you’re unfamiliar with cooling-system service.

• Match reference numbers like 12456113, 12569519 or AW5104 to your old part
• Inspect mounting points, hose clearances and accessory belt routing
• Bleed cooling system after installation to prevent air pockets

What warranty and quality assurances come with the A-Premium kit?

A-Premium backs this water pump assembly with a one-year unlimited-mileage guarantee, reflecting the brand’s confidence in manufacturing and fitment. That coverage applies to defects in material and workmanship under normal use; keep your proof of purchase to claim warranty support.

• One-year unlimited-mileage warranty for peace of mind
• Supplied as an assembled kit to reduce parts mismatches
• Reference numbers listed to help confirm proper replacement

Who is this for? If you own a compatible Chevy, GMC, Buick, Cadillac, Hummer, Isuzu or Saab model from the listed years and need a complete water pump replacement—especially when the old pump shows leaks, bearing noise or cooling problems—this A-Premium assembled kit is tailored for DIY mechanics and professional installers who want a direct-fit aftermarket solution with a full gasket and thermostat included. Verify fitment with your vehicle’s part number or the reference list before purchase to ensure a correct match.