Febi 37645 Engine Coolant Reservoir

Engine Coolant Reservoir for Mercedes-Benz

Febi 37645 is an engine coolant reservoir built for Mercedes-Benz cooling system service on select CLS and E-Class applications. It features 2 connections and a 25.0 mm connection diameter, with sensor-equipped fitment noted for the listed vehicles.

Key Features

• Engine coolant reservoir for cooling system replacement
• 2 connection ports for the specified application
• 25.0 mm connection diameter
• Sensor-equipped fitment noted in the vehicle listings
• Febi part number 37645 for easy identification

Detailed Description

This Febi engine coolant reservoir, part number 37645, is specified for Mercedes-Benz CLS350, CLS63 AMG, CLS55 AMG, E320, E350, E500, E550, E63 AMG, E55 AMG, and E280 applications listed below. It is a direct-fit cooling system component for vehicles that use a reservoir with two connections and a 25.0 mm connection diameter. This part cross-references Mercedes-Benz 211 500 00 49 for the same application.

Use Febi 37645 when replacing a cracked, leaking, or sensor-related coolant reservoir on compatible Mercedes-Benz CLS and E-Class models. The reservoir is listed with sensor fitment, making it relevant for vehicles that monitor coolant level through the tank assembly. Febi 37645 supports accurate cooling system restoration on the specified Mercedes-Benz platforms.

Compatible With

• Fits 2007-2010 Mercedes-Benz CLS350, N/A; with sensor; 2 connections; 25 mm connection diameter
• Fits 2007-2010 Mercedes-Benz CLS63 AMG, N/A; with sensor; 2 connections; 25 mm connection diameter
• Fits 2003-2009 Mercedes-Benz E320, N/A; with sensor; 2 connections; 25 mm connection diameter
• Fits 2007-2009 Mercedes-Benz E350, N/A; with sensor; 2 connections; 25 mm connection diameter
• Fits 2007-2009 Mercedes-Benz E550, N/A; with sensor; 2 connections; 25 mm connection diameter
• Fits 2007-2009 Mercedes-Benz E63 AMG, N/A; with sensor; 2 connections; 25 mm connection diameter
• Fits 2007 Mercedes-Benz E280, N/A; with sensor; 2 connections; 25 mm connection diameter
• Fits 2006 Mercedes-Benz CLS55 AMG, N/A; with sensor; 2 connections; 25 mm connection diameter
• Fits 2004-2006 Mercedes-Benz E500, N/A; with sensor; 2 connections; 25 mm connection diameter
• Fits 2006 Mercedes-Benz E55 AMG, N/A; with sensor; 2 connections; 25 mm connection diameter
• Fits 2003 Mercedes-Benz E55 AMG, N/A; with sensor; 2 connections; 25 mm connection diameter

What It Helps Address

• Coolant loss from a cracked or leaking reservoir
• Incorrect coolant level readings from a worn tank assembly
• Reservoir fitment issues on sensor-equipped Mercedes-Benz cooling systems
• Replacement needs for aging E-Class and CLS cooling components
• Restoration of proper coolant storage in the expansion system

Installation Notes and Tips

Confirm the reservoir has 2 connections and a 25.0 mm connection diameter before installation. Verify sensor-equipped configuration and compare the original part number against Mercedes-Benz 211 500 00 49 and Febi 37645 to ensure correct application. Inspect hoses, clamps, and the coolant sensor connection during replacement to avoid repeat leaks.

Quality Assurance

Febi is an established aftermarket brand for European vehicle components, and this coolant reservoir is cataloged for the specified Mercedes-Benz applications with OE cross-reference support.