161A0-29015 / 161A0-39015 Electric Engine Water Pump for Toyota Prius CT200h

◆ This electric engine water pump is a direct replacement for the original Toyota/Lexus unit, designed to circulate coolant through the hybrid cooling circuit and maintain proper operating temperature.

◆ The primary OEM reference number is 161A0-29015. The interchangeable reference 161A0-39015 is listed as a superseded or equivalent part number for the same application .

◆ The pump is an electric (not belt-driven) assembly, supplied with a gasket for installation. It is engineered to OEM standard dimensions for direct fitment without modification .

◆ It is primarily designed for hybrid models equipped with the 2ZR-FXE and 1NZ-FXE engines, covering the Toyota Prius (2010–2015), Prius C (2012–2019), Prius V (2012–2017), Prius Plug-In, and Lexus CT200h (2011–2017) .

◆ This product is an electric water pump assembly manufactured to meet original quality standards for coolant flow, electrical reliability, and durability.

◆ Part Numbers: 161A0-29015 / 161A0-39015

◆ Component Type: Electric Engine Water Pump Assembly

◆ Vehicle Make: Toyota / Lexus

◆ Engine Compatibility: 2ZR-FXE (1.8L Hybrid), 1NZ-FXE (1.5L Hybrid)

◆ Operation: Electric (12V), not mechanically driven

◆ Includes: Gasket

◆ AISIN Reference: WPT-190

◆ Note: Some listings describe this as the “main engine water pump" for the hybrid cooling circuit

◆ OEM Standard Fit: Manufactured to exact original specifications for a direct, hassle-free replacement.

◆ Electric Operation: Independent of the engine belt drive, allowing coolant circulation even when the engine is not running in hybrid mode.

◆ Complete Assembly: Supplied with gasket for simplified installation .

◆ Durable Construction: Built with materials resistant to heat, coolant exposure, and continuous hybrid operation.

◆ Toyota Prius (ZVW30): 2010–2015

◆ Toyota Prius C (NHP10): 2012–2019

◆ Toyota Prius V (ZVW40/41): 2012–2017

◆ Toyota Prius Plug-In (ZVW35): 2012–2015

◆ Lexus CT200h (ZWA10): 2011–2017

◆ Additional applications may include Toyota Aqua, Auris Hybrid, Corolla Hybrid, and Sienta Hybrid with 1NZ-FXE/2ZR-FXE engines in certain markets .

◆ Note: Verify against your vehicle's original part number and engine code before ordering, as fitment may vary by market and production period.

Q1: Is this a genuine Toyota/Lexus part?

A: The 161A0-29015 reference is the original equipment part number. Both genuine Toyota/Lexus (often supplied by AISIN as WPT-190) and aftermarket equivalents are available that match the original fit and function .

Q2: How do I confirm if it fits my vehicle?

A: Check your vehicle’s existing water pump. If it is stamped with 161A0-29015 or 161A0-39015, this replacement will fit. Also confirm your vehicle is a Prius (2010–2015), Prius C (2012–2019), Prius V (2012–2017), or CT200h (2011–2017) .

Q3: What are the symptoms of a failing electric water pump?

A: Common signs include engine overheating, coolant leaks, abnormal pump noise, and diagnostic trouble code P261B on the dashboard. Because this pump is electric, failure can occur independently of engine speed, making prompt replacement important to prevent engine damage .