Stant 49452 Engine Coolant Thermostat / Water Outlet Assembly

Integrated Thermostat Housing for Mercedes-Benz Cooling

The Stant 49452 integrated thermostat housing combines the thermostat and water outlet housing into one assembly for a cleaner, more direct replacement. Built from durable material and set to open at 212 degrees F, it supports proper engine coolant flow in Mercedes-Benz applications that require this specific housing design.

For drivers searching for a Mercedes-Benz G550 thermostat housing, Mercedes-Benz SL550 water outlet assembly, or a Stant 49452 replacement thermostat housing, this part matches the listed vehicle applications and temperature specification.

Key Features

• Integrated thermostat housing design simplifies replacement of the thermostat and housing assembly
• Water outlet thermostat housing construction made from durable material for long service life
• Thermostat opening temperature: 212 degrees F
• Bypass plate diameter: 1.64 in.
• Flange diameter with seal: 2.07 in.; without seal: 2.3 in.
• Height from flange to bottom: 1.64 in.
• Stant 49452 for select Mercedes-Benz cooling system applications

Detailed Description

The Stant Integrated Thermostat Housing line is built for applications that use a combined thermostat and water outlet assembly. This design reduces the need to service separate components and provides a direct-fit style replacement for the original cooling system layout. Part number 49452 is specified at 212 degrees F and is listed for select Mercedes-Benz models including G550, G63 AMG, GL450, GL550, SL550, E550, ML550, S550, CL550, and R550.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Cooling Issues This Part Addresses

• Coolant temperature control concerns tied to a worn thermostat assembly
• Leaks at the thermostat housing or water outlet connection
• Cracked or deteriorated housing material on the original unit
• Service delays caused by replacing a thermostat and housing separately
• Fitment problems when the original housing uses an integrated design

Installation Notes and Tips

Verify the flange diameter, bypass plate diameter, and 212-degree temperature specification before installation. Confirm the vehicle application against the listed Mercedes-Benz fitment, including 2007-2015 G550, 2013 G63 AMG, 2013 GL450, 2008-2012 GL550, 2007-2012 SL550, 2010-2011 E550, 2008-2011 ML550, 2007-2011 S550, 2007-2010 CL550, and 2008 R550. Clean the sealing surfaces thoroughly and inspect the cooling system for contamination or wear before installing the new housing assembly.

Quality Assurance

Stant manufactures cooling system components with application-specific fitment and material selection for replacement service. The integrated thermostat housing design and published dimensional specifications help confirm the correct part before installation.