Gates 41557E Engine Auxiliary Water Pump - Heater

Gates Electric Water Pump 41557E Overview

The Gates 41557E is an engine auxiliary electric water pump built for stable cooling and heating system performance. It uses a plastic housing and plastic impeller with standard rotation, and it is specified as an OE Performance replacement for vehicles that rely on electric coolant circulation.

Gates electric water pumps are part of the Water Pump (Electric) line, focused on restoring proper coolant flow in auxiliary heater-to-washer and heater circuits. The 41557E supports applications across Mercedes-Benz models, including E350, E550, C350, C300, and C63 AMG, where precise electric pump operation is required.

Key Features

• Engine auxiliary water pump with electric drive style
• Plastic housing and plastic impeller for lightweight construction
• Standard impeller rotation
• Single outlet configuration
• No back housing included
• No pulley included and no fan clutch included
• OE Performance rating for direct replacement use
• Application description: auxiliary heater to washer

Detailed Product Information

Gates 41557E electric water pump is engineered for Mercedes-Benz cooling and heating systems that use an auxiliary circulation pump. It is a direct-fit style replacement for select 2008-2017 Mercedes-Benz vehicles, including E400, E550, SL450, SL550, SL63 AMG, SL65 AMG, SLC43 AMG, C350, C300, C63 AMG, E350, and GLK350. This part number, 41557E, is also referenced by 941557E, 2048350264, AW6173, AWP2526, CP6713, T1395, and WP2526.

This part cross-references 2048350264 and AW6173 for the same application.

Common Replacement Reasons

• Weak or inconsistent heater output
• Reduced coolant circulation in the auxiliary circuit
• Electric pump noise or failure
• Washer-heater system performance concerns on equipped vehicles
• Cooling system flow issues tied to the auxiliary pump

Installation Notes

Verify the vehicle’s original pump configuration, connector style, and application notes before installation. This pump is listed for heater and heater-to-washer applications, so confirm the exact Mercedes-Benz fitment by year and model before ordering. Use clean coolant system practices during replacement and inspect related hoses, fittings, and electrical connections for wear.

Quality Assurance

Gates manufactures this electric water pump with premium materials for durable operation under demanding driving conditions. The 41557E is built to OE Performance expectations and is intended to restore proper cooling and heating system operation on the listed Mercedes-Benz applications.