ACDelco Engine Water Pump Gold 252-1027 (19382527) with Seals & Gaskets, Heat-Treated Shaft

The ACDelco Gold 252-1027 (19382527) Engine Water Pump is a premium aftermarket coolant pump that circulates engine coolant and includes the seals and gaskets needed for a complete replacement.

This ACDelco Gold water pump is built as a high-quality replacement for original-equipment units and is designed to restore proper coolant flow, maintain stable engine temperature, and fit a wide range of GM and non-GM vehicles. Manufactured under ACDelco Professional standards, the pump arrives complete with O-rings, gaskets, and seals so you have the parts needed for a straightforward installation. Materials and treatments applied to key components focus on longevity and leak-resistance.

How does this water pump improve cooling system reliability?

The pump uses heat-treated shafts and sealed bearings to withstand continuous rotation and coolant exposure, reducing risk of premature failure. Coated sealing surfaces and precision machining lower the chance of leaks at high operating temperatures. These engineering choices help the cooling system keep engine temperatures within the intended range during daily driving.

• Heat-treated shaft assembly for enhanced strength
• Permanently sealed, lubricated bearings for long life
• Coated seals to resist wear and leakage
• Precision-fit housing to match OEM mounting points

What comes in the box and why does it matter for installation?

This unit ships with all necessary gaskets, O-rings, and seals to replace the pump without scavenging old parts. Having the correct sealing components helps ensure a leak-free installation and saves time in the garage. The included hardware reduces the chance of incompatibilities that can occur when reusing worn gaskets.

• Complete gasket and seal kit for a one-stop replacement
• Pre-lubricated bearing assembly for immediate fitment
• Housing machined to OEM-style mounting dimensions

Will this ACDelco Gold pump fit my vehicle and how durable is it?

ACDelco Gold water pumps are designed to cover many GM platforms and a broad selection of non-GM applications—verify part numbers and vehicle fitment before purchase. Durability features such as coated seals and heat-treated components provide a higher tolerance to thermal and mechanical stress than many economy aftermarket pumps. Regular coolant maintenance and proper installation further extend service life.

• Engineered to match fit, form, and function of many original pumps
• Robust materials for long-term performance under heat and pressure
• Tested for leak-free operation to reduce warranty returns

How does this pump compare to remanufactured or OEM units?

ACDelco Gold is positioned as a premium aftermarket option, built to closely mirror OEM specifications while offering the convenience and availability of aftermarket parts. Unlike some remanufactured cores, this pump is new, with fresh bearings, seals, and treated components for consistent performance. It provides a balance between OEM-quality engineering and aftermarket pricing and availability.

• New construction versus remanufactured core components
• Includes fresh seals and gaskets to prevent reinstalled leak points
• Manufactured to ACDelco Professional quality standards

Who is this for: The ACDelco Gold 252-1027 suits DIY mechanics, professional technicians, and vehicle owners seeking a reliable, OEM-style replacement water pump. It is ideal for anyone replacing a failing pump, performing a scheduled cooling system refresh, or restoring coolant circulation after head-gasket or timing-component service. Confirm vehicle compatibility by matching the part number to your application before ordering.