Gates 41555E Engine Auxiliary Water Pump - To Inverter

Electric Water Pump for Toyota and Lexus

The Gates 41555E electric water pump is built for vehicles that rely on precise coolant circulation through the inverter or intercooler system. It uses a plastic housing and plastic impeller with standard rotation to help restore proper cooling and heating system operation in select Toyota, Lexus, and Scion applications.

Gates Water Pump (Electric) components are part of the brand’s electric pump line for modern cooling-system designs. The 41555E is an OE-performance replacement for vehicles that use an electric auxiliary water pump, including Toyota Prius, Toyota Highlander, Lexus CT200h, and Lexus RX450h applications.

Key Features

• Electric engine auxiliary water pump for cooling-system circulation
• Plastic housing and plastic impeller construction
• Standard impeller rotation
• Two outlet design
• OE performance rating for direct replacement use
• No back housing, pulley, or fan clutch included
• Intercooler - Variable Speed application description

Detailed Product Overview

The Gates 41555E is an electric engine auxiliary water pump designed for vehicles that use electronically controlled coolant flow. It helps maintain circulation in inverter and related thermal-management systems, supporting stable operating temperatures in hybrid and fuel-efficient platforms. This part number is commonly searched as Gates 41555E and 41555E for Toyota Prius, Toyota Highlander, and Lexus CT200h service needs.

This part cross-references GMB 170-4180 for the same application.

What This Water Pump Helps Address

• Loss of coolant circulation in the inverter cooling circuit
• Overheating concerns tied to electric auxiliary pump failure
• Reduced heating or cooling system performance
• Noisy or inconsistent electric pump operation
• Replacement needs on hybrid and electric-assisted cooling systems

Installation Notes and Fitment

Verify the vehicle’s position and application notes before ordering. Fits 2013-2015 Toyota Highlander, N/A. Fits 2012-2015 Toyota Prius, N/A. Fits 2012-2015 Toyota Prius C, N/A. Fits 2012-2015 Toyota Prius Plug-In, N/A. Fits 2012-2015 Toyota Prius V, N/A. Fits 2012-2013 Lexus CT200h, N/A. Fits 2013 Lexus RX350, N/A. Fits 2013 Scion iQ, N/A. Fits 2011-2012 Lexus CT200h, To Inverter. Fits 2010-2012 Lexus RX450h, To Inverter. Fits 2011-2012 Toyota Highlander, To Inverter. Fits 2012 Toyota Prius, To Inverter, Nov. 1, 2011 & Older. Fits 2012 Toyota Prius Plug-In, To Inverter, Nov. 1, 2011 & Older. Fits 2012 Toyota Prius V, To Inverter, Nov. 1, 2011 & Older. Fits 2010-2011 Toyota Prius, To Inverter.

Confirm the original pump style, outlet layout, and inverter or intercooler configuration before installation. The 41555E is an electric replacement pump, so electrical connector condition and coolant system integrity should be checked during service.

Quality Assurance

Gates manufactures this electric water pump with premium materials and OE-performance fitment standards for durable operation in demanding driving conditions. The 41555E is engineered to restore proper cooling-system function in the listed Toyota, Lexus, and Scion applications.