A-Premium Water Pump for Chevrolet GMC Cadillac Isuzu — Direct-Fit, OE Mounting, 1-Year Warranty

A-Premium water pump engineered as a direct-fit cooling pump for select Chevrolet, GMC, Cadillac, Isuzu, Workhorse and Oldsmobile models.

This replacement water pump from A-Premium is built to restore engine cooling performance where the original unit has worn, leaked, or failed. It matches OE mounting locations and pulley fitment for many late-1990s through early-2010s GM and related vehicles, and includes part number cross-references so you can confirm compatibility. Backed by a one-year unlimited-mileage warranty, the pump aims to offer a dependable, budget-friendly option for repairs and maintenance.

Which vehicles will this A-Premium water pump fit?

The pump covers a broad range of GM-based platforms and related marques. Fitment includes many Chevrolet trucks and vans, GMC trucks and Savana vans, Cadillac Escalade, Isuzu pickups and NPR trucks, plus Workhorse chassis models and certain Oldsmobile applications. Always verify the reference numbers or your vehicle’s year, make, and engine before ordering.

• Chevrolet: Astro, C1500/2500/3500, Express 1500/2500/3500, Silverado, Tahoe, S10 and more (1996–2012 ranges).
• GMC: C1500/C2500/C3500, Sierra, Savana 1500–3500, Jimmy, Yukon and medium-duty platforms (1996–2014 ranges).
• Isuzu and Workhorse: Hombre, NPR, NPR-HD, FasTrack and P-series chassis models.
• Cadillac: Escalade (1999–2000) and other specified models where applicable.

How do I confirm the pump matches my vehicle?

Confirm compatibility by checking your vehicle’s year, model, and engine family against the detailed fitment list, and cross-reference the part numbers provided. Use the listed reference numbers to match your OEM or existing pump part code. If you’re uncertain, compare mounting hole locations, pulley interface, and inlet/outlet positions with the removed unit.

• Compare your existing pump to the listed reference numbers: 12528917, 12532526, 12561392, etc.
• Check mounting pattern and pulley diameter against your old pump.
• Consult vehicle service manual or a parts specialist for engine-specific confirmation.

What materials and quality features are included?

A-Premium manufactures this pump with corrosion-resistant components and a precision-machined bearing housing to maintain rotor alignment and seal life. The impeller and housing are designed to meet cooling flow requirements typical for the covered engines, while seals and gaskets are selected to reduce leak risk. A one-year unlimited-mile warranty supports coverage for workmanship or material defects.

• Durable housing and corrosion-resistant finish for long-term operation.
• Precision bearings and rotor assembly to reduce vibration and wear.
• Includes gasket/seal interface designed to minimize coolant leaks.
• Backed by a one-year unlimited-mileage guarantee from A-Premium.

What should I know about installation and maintenance?

Installation follows standard water pump replacement procedures: drain coolant, remove drive components as needed, swap the pump and gasket, and refill and bleed the cooling system. Torque all fasteners to factory specifications and inspect belts, pulleys, and hoses while the system is open. Routine coolant maintenance and correct belt tension will help extend pump life.

• Drain and properly dispose of old coolant; flush system if contaminated.
• Use manufacturer-recommended coolant type and mix after installation.
• Replace drive belt, tensioner, or thermostat if worn during service.
• Tighten bolts to OEM torque values and confirm leak-free operation.

Who is this for? The A-Premium water pump is intended for DIY mechanics, independent repair shops, and fleet managers who need an economical, direct-fit replacement for late‑1990s to early‑2010s GM-based trucks, vans, and chassis cabs. It’s suited for owners restoring cooling performance after a leak or bearing failure who want clear part-number cross-references and a backed limited warranty without paying OEM prices.