A-Premium Engine Water Pump — DOHC 6-Cyl 2.8/3.0/3.6L Direct-Fit, Aluminum Housing & Steel Impeller

The A-Premium Engine Water Pump is a direct-fit replacement for GM DOHC 6-cylinder 2.8, 3.0 and 3.6L engines designed to restore reliable coolant circulation and engine thermal management.

This precision-made water pump from A-Premium replaces worn or failing units on a wide range of Buick, Cadillac, Chevrolet, GMC, Saturn, Saab and Pontiac models. Built with an aluminum housing and a six-vane steel impeller, the pump is engineered for durability and consistent coolant flow using the vehicle’s serpentine belt drive. It ships with manufacturing references that map to many OEM and aftermarket part numbers for straightforward identification.

How does this water pump fit my GM vehicle?

The pump is manufactured to match factory mounting locations, bolt patterns and drive configuration for compatible DOHC 6-cylinder engines. Check your vehicle year and model against the provided fitment list and reference numbers before ordering to confirm compatibility.

• Direct-fit for many Buick, Cadillac, Chevrolet, GMC, Saturn, Saab and Pontiac models
• Mounting hole count and hub-hole alignment mirror the original
• Designed for serpentine-belt drive systems used on the listed engines
• Reference numbers (e.g., 12566029, 12618472, PA10105) help verify fit

What are the key construction and performance features?

The pump features an aluminum housing for corrosion resistance and thermal stability, paired with a six-vane steel impeller that withstands rotational stress. These materials and the standard impeller rotation direction help maintain steady coolant flow and long service life when installed correctly.

• Aluminum housing resists corrosion and dissipates heat
• Steel impeller with six vanes for robust fluid movement
• Four hub holes and six mounting holes for secure installation
• Engineered for serpentine-belt drive engagement

What should I expect during installation and maintenance?

Installation follows typical water-pump replacement steps: draining coolant, removing the drive belt and pulleys as needed, unbolting the old pump, and fitting the new unit with a proper gasket or sealant. Use the specified torque values and refill the cooling system with the recommended coolant mixture; inspect for leaks after the first warm-up cycle.

• Requires coolant drainage and serpentine belt removal in most applications
• Use OEM-equivalent gasket or sealant and correct torque specs
• Refill and bleed the cooling system, then check for leaks and proper circulation
• Follow manufacturer service intervals and replacement triggers (noise, leaks, overheating)

What warranty and quality assurances come with the pump?

A-Premium backs this water pump with a one-year, unlimited-mileage guarantee against defects in materials and workmanship. The brand supplies a wide range of automotive parts and provides reference numbers to help confirm correct selection and reduce return risk.

• One-year unlimited-mileage manufacturer guarantee
• Reference numbers included for part verification
• Quality checks during manufacturing and packaging
• Customer support available for fitment or warranty inquiries

Who is this for: The A-Premium Engine Water Pump is aimed at professional mechanics, independent shops and DIY owners who need a dependable, direct-replacement cooling component for GM DOHC 6-cylinder engines in Buick, Cadillac, Chevrolet, GMC, Saturn, Saab and Pontiac vehicles. Choose this pump if you require factory-style fitment, durable materials, and a backed warranty for routine maintenance or repair jobs.