BUSIDN Electric Water Pump Assembly for Toyota Prius & Lexus CT200h 2010–2019 — Direct-Fit with Sealing Gasket

The BUSIDN electric water pump assembly is a direct-fit replacement that restores coolant circulation for compatible Toyota Prius and Lexus CT200h hybrid models from 2010–2019.

If your hybrid’s coolant flow or heater performance has declined, a worn or leaking water pump assembly can be the culprit. This BUSIDN unit replaces factory part numbers 161A0-29015 and 161A0-39015, and includes a sealing gasket to address common leak points. It’s designed for the 1.5L and 1.8L hybrid engines used across several Prius variants and the Lexus CT200h, providing an OEM-style fit for professional installation.

How does this water pump assembly restore cooling and heater function?

The pump is belt-driven to move hot coolant from the engine block and draw cool coolant back in, maintaining proper engine temperature and cabin heater output. Replacing a failing pump prevents overheating and helps the hybrid system reach optimal operating conditions faster.

• Direct-fit replacement for specified Prius and CT200h engine configurations.
• Includes a sealing gasket to reduce the risk of coolant leaks after installation.
• Drives coolant through engine channels to stabilize temperature and heater performance.

Which vehicles and part numbers does this assembly fit?

This BUSIDN pump is compatible with a range of Toyota Prius models and the Lexus CT200h listed by model years and engine sizes. Always verify your VIN or the existing part number before ordering to ensure correct fitment.

• Fits 2010–2015 Toyota Prius E/G/L/S (1.8L) and 2012–2017 Prius V (1.8L).
• Fits 2012–2019 Toyota Prius c (1.5L) and 2013–2015 Prius Plug-In (1.8L).
• Also fits 2011–2017 Lexus CT200h (1.8L); replaces 161A0-29015 and 161A0-39015.

What should I know about installation and reliability?

This product ships with the pump and sealing gasket; installation instructions are not included. Professional installation is recommended to ensure correct belt routing, proper torque on fasteners, and a leak-free coolant system after fitting.

• Sealing gasket included to help prevent leakage at the mating surface.
• No instructions included—seek a qualified mechanic for best results.
• If the existing pump is aged, replace promptly to avoid engine or head-gasket damage risk.

How will replacing the pump affect long-term engine health?

Replacing a failing pump helps maintain stable engine temperatures and prevents secondary damage that can occur from prolonged overheating. While it doesn’t fix unrelated cooling-system issues, it removes one common failure point and supports reliable hybrid operation.

• Helps prevent overheating-related wear to the cylinder head and gasket.
• Restores consistent coolant circulation for thermal stability and heater function.
• Supports longevity of other cooling components by maintaining proper flow.

Who is this for: This BUSIDN electric water pump assembly is intended for owners and technicians of Toyota Prius (2010–2019 variants listed) and Lexus CT200h who need a reliable, direct-fit replacement for part numbers 161A0-29015 or 161A0-39015. It’s suitable for drivers experiencing coolant leaks, loss of heater performance, or any symptoms indicating reduced coolant circulation, but it should be fitted by a qualified mechanic to ensure correct installation and system integrity.