Electric water pumps can look similar across Toyota and Lexus applications, but a similar connector or housing does not establish fitment. Start with the vehicle year, engine, hybrid or non-hybrid configuration, and original pump reference.
Quick Answer
Match an electric water pump by vehicle application and original reference number. Keep the 16032-25010, 161A0-39025, G9020-47031, and 161A0-29015 families separate because each listing covers different vehicle and powertrain ranges.
Check the part-number family
The 16032-25010 electric water pump is listed for selected newer Toyota and Lexus applications. The 161A0-39025 pump is listed for a different group of Toyota and Lexus hybrid applications.
For earlier Prius Hybrid applications, review the G9020-47031 pump listed for 2004–2009 Prius Hybrid 1.5L vehicles. The 161A0-29015 pump is a separate listing for selected Prius-family and Lexus CT200h hybrid vehicles.
Before diagnosing
- Check coolant level and visible leaks only when the system is cool.
- Record warning lights, overheating events, noises, and diagnostic codes.
- Do not open a hot cooling system or drive an overheating vehicle.
- Use the manufacturer service information to identify the relevant cooling circuit.
Fitment checklist
- Confirm year, make, model, engine, and hybrid or gas configuration.
- Compare the original pump reference and connector with the listing.
- Check the listed cooling circuit and mounting arrangement.
- Review the gasket or seal supplied and follow the vehicle service procedure.
For related reading, see Vypart’s Prius and Lexus CT200h engine water-pump guide and Prius inverter versus engine water-pump guide.
FAQ
Can a pump fit if the connector matches?
Not necessarily. Verify the reference number, vehicle application, mounting arrangement, and cooling-system role.