Buying the Right Water Pump for Your Car

Michael O'Connor

January 12, 2026

5 min read

Michael O'Connor

January 12, 2026

5 min read

Water pumps - opens in new window or tab. rely on seals and bearings to operate smoothly and cleanly. These parts wear out over time, producing leaky seals and noisy bearings. Both can cause big problems for your engine if left unchecked.

Learn how to find signs of a bad water pump - opens in new window or tab.. When it’s time to replace your water pump, refer to our how-to guide and video with step-by-step instructions - opens in new window or tab.. One of the first steps is to buy the right pump.

Types of Water Pumps

A previously owned 2010-2015 Toyota Prius electric water pump displayed on a gray carpet background. — A 2010-2015 Toyota Prius water pump relies on an electric motor rather than a belt drive.

Belt-driven: Mechanical water pumps are the most common type. They are driven by the serpentine belt or drive belt and use the power of the engine to move the coolant - opens in new window or tab..

Timing-belt-driven: These water pumps run off of the timing belt - opens in new window or tab., which has to be in just the right position, or else it can damage your engine. When it’s time to replace your timing belt, you should change the water pump and vice versa.

Integrated: While most water pumps are separate components, an integrated pump is built into the vehicle’s timing housing. This reduces the potential for leaks and the number of moving parts in the cooling system.

Electric: Electric water pumps are powered by the vehicle’s electrical system rather than the engine via a belt or chain. They are common in newer cars, particularly hybrids.

See our blog post: 4 Types of Water Pumps - opens in new window or tab.

How to Find a Water Pump That Fits Your Car

A newly installed water pump sitting in a vehicle's motor. — Specific vehicle makes and models require specific water pumps. Make sure yours is a match before buying.

Your new water pump must be compatible with your vehicle. We recommend using the eBay Parts Finder - opens in new window or tab.. With this tool, you can enter your vehicle’s year, make, model, engine, and trim. Then, search for water pumps - opens in new window or tab. to find ones guaranteed to fit your vehicle.

To double-check for compatibility, you can cross-reference the parts number in your vehicle's repair manual. Dedicated repair manuals have specs for nearly every component and will include dimensions and ratings for a new water pump.

How much should a new water pump cost?

Water pumps range broadly in price depending on the type of pump your vehicle uses and the quality of the part. For example, what if you drive a 1990s Buick LeSabre, and it needs a new water pump and timing belt? ACDelco is the original equipment (OE) supplier for General Motors, which runs Buick. An OE-level ACDelco replacement should cost about $100. A lower-grade replacement part could cost around $30 to $50. Those are great options. Complicated water pumps designed for more sophisticated vehicles can cost much more.

You can also save money by buying a professionally-rebuilt pump, which range from $80 to $200. A used pump that was not rebuilt usually cost between $30 and $70.

Should you consider a rebuilt water pump?

It is possible to get a used or rebuilt water pump instead of buying a new one. However, you should be certain that a used or rebuilt pump is in good working order and leak-free.

A rebuilt pump is a good option. It comes with all-new seals and gaskets and is tested before being sold. If you have a classic car or an exotic vehicle, a rebuilt pump might be your only option because a compatible new might be hard to find. If the pump was tested under pressure, it should be fine to use for your vehicle.

Other Parts to Buy With a New Water Pump

An old cracked serpentine belt, displayed on a white background. — If your serpentine belt looks like this, it’s due for replacement.

Belt: While you have the water pump out, check the belt that drives it. If it’s a serpentine belt in good condition, free of cracks or wear, it should be fine. If there are flaws, replace it. If your car uses a timing belt, swap it out.

Thermostat: The thermostat controls the flow of coolant throughout the vehicle. If it’s bad, even a new water pump won’t function properly. Replacing the old one with a new one ensures that your vehicle’s temperature stays in the proper range.

Pulley: The pulley that runs the water pump will eventually wear out. Replace the pulley when you're changing the water pump.

Save Time by Buying a Water Pump Kit

An OEM Honda V-6 water pump and timing belt kit for the Accord and Odyssey V-6 engine, displayed in its factory packaging on a white background. — Choosing an OEM water pump and timing belt kit is a safe bet.

Water pump rebuild kit: Rebuilding your water pump is a great way to save money and get excellent performance. A rebuild kit should come with all the gaskets, seals, and bearings you need.

Water pump and timing belt kit - opens in new window or tab.: If your water pump is run by the timing belt, replace both of them at the same time. Buy a kit that includes a pump and a belt so you can get the entire job done.

Water pump and thermostat kit: Replacing the water pump and thermostat at the same time ensures that your engine maintains the proper temperature. Consider a kit that includes the pump and termostat to ensure the cooling system is in top shape.

About the author

Michael O'Connor

Michael O’Connor is a Bay Area writer who grew up restoring classic cars. These days, he works on his 1979 Fiat Spider. Michael is an alum of Sonoma State’s Creative Writing program. He began professional auto writing in 2015, contributing to AutoList, CarGurus, Endurance Warranty, Safe-Guard, and other car sites.

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This article is meant to provide general guidance only. Automotive maintenance, repair, upgrade, and installation may depend on vehicle-specifics such as make and model. Always consult your owner's manual, repair guide for specific information for your particular vehicle and consider a licensed auto-care professional's help as well, particularly for advance repairs.