Stant 14589 Engine Coolant Thermostat / Water Outlet Assembly

Integrated Thermostat Housing for Mercedes-Benz

Stant 14589 is an engine coolant thermostat and water outlet assembly built with the thermostat integrated into the housing. That one-piece design simplifies service on Mercedes-Benz cooling systems while helping restore proper coolant flow control at the OE temperature rating of 189 degrees.

Compatible With 1994-2004 Mercedes-Benz C220, C230, and SLK230 applications, this integrated thermostat housing is a direct-fit cooling system service part for vehicles that need a replacement water outlet thermostat housing. The Stant Integrated Thermostat Housing line focuses on combining the thermostat and housing into a single assembly for a cleaner, more efficient repair.

Key Features

• Stant part number 14589
• Integrated thermostat housing assembly for simplified installation
• OE temperature rating: 189 degrees F
• Durable housing material for long service life
• Bypass plate diameter: 1.7 in.
• Flange diameter with seal: 2.63 in.
• Flange diameter without seal: 2.88 in.
• Height from flange to bottom: 1.32 in.

Detailed Description

This Stant water outlet thermostat housing is engineered for Mercedes-Benz cooling system service where the thermostat and housing are replaced together. By integrating the thermostat into the housing assembly, Stant 14589 reduces the number of separate components involved in the repair and helps maintain the factory-style coolant temperature control specified for these applications. It is a practical choice for Mercedes-Benz C220, C230, and SLK230 models that require a 189-degree thermostat housing.

The Stant Integrated Thermostat Housing product line is built around service-friendly OE-style replacement parts for cooling system maintenance. For buyers searching for a Mercedes-Benz C230 thermostat housing, Mercedes-Benz C220 water outlet assembly, or Mercedes-Benz SLK230 integrated thermostat housing, this part number provides a focused fitment match for the listed vehicles.

Common Cooling System Issues Addressed

• Engine running cooler or hotter than the specified thermostat temperature
• Coolant leaks at the thermostat housing or water outlet area
• Cracked or worn housing from age and heat cycling
• Delayed coolant circulation after thermostat wear
• Service time increased by replacing thermostat and housing separately

Installation Notes and Tips

Verify the flange diameter, bypass plate diameter, and 189-degree temperature rating before installation. Clean the mating surfaces thoroughly and inspect the cooling system for residue or damage that could affect sealing. This part is listed for N/A position applications on 1994-1996 Mercedes-Benz C220, 1997-2000 Mercedes-Benz C230, and 1998-2004 Mercedes-Benz SLK230.

Quality Assurance

Stant manufactures this thermostat housing assembly as a durable replacement cooling component for the listed Mercedes-Benz applications. Part number 14589 is built to match the OE temperature specification for the covered vehicles.