Rein CTA0058 Engine Coolant Thermostat Housing Assembly

OE-Style Thermostat Housing for Audi Cooling Systems

Rein CTA0058 is an engine coolant thermostat housing assembly built for OE-style fit, form, and function. It uses temperature calibration at 87 degrees to deliver a consistent cooling-system response, with a gasket or seal included for a cleaner service replacement.

Compatible with select Audi applications, including Audi Q7, Audi A6 Quattro, Audi A7 Quattro, and Audi A8 Quattro, this thermostat housing assembly is designed for direct replacement service on the listed vehicles. Rein CTA0058 is a standard replacement part for technicians and owners looking to restore proper coolant control.

Key Features

• Engine coolant thermostat housing assembly
• 87-degree start-to-open temperature for precise coolant regulation
• Gasket or seal included
• Standard replacement grade
• Built with high-quality metals and components for durability
• OE-quality fit and performance focus

Detailed Description

Rein Automotive CTA0058 is engineered to meet OE expectations for installation, fit, and operation. The housing assembly is produced with materials selected to match or exceed original equipment standards, helping maintain proper coolant flow and engine temperature control. Its calibrated thermostat response supports consistent operation in the cooling system, which is important for vehicles that depend on accurate thermal management.

This part cross-references URO 06E121111AT for the same application. For Audi Q7, Audi A6 Quattro, Audi A7 Quattro, and Audi A8 Quattro cooling system service, CTA0058 provides a direct-fit replacement solution that aligns with OE-style repair requirements.

What It Helps Address

• Coolant temperature regulation concerns
• Thermostat housing leaks at the sealing surface
• Delayed or inconsistent thermostat opening
• Cooling system service on Audi Q7, A6 Quattro, A7 Quattro, and A8 Quattro models
• Replacement of worn or damaged thermostat housing assemblies

Installation Notes and Tips

Mounting hardware is not included. Inspect the mating surfaces, replace the included gasket or seal during installation, and verify the cooling system is properly filled and bled after service. Confirm vehicle application by year and model before installation.

• Fits 2017-2019 Audi Q7, N/A
• Fits 2016-2018 Audi A6 Quattro, N/A
• Fits 2016-2018 Audi A7 Quattro, N/A
• Fits 2015-2018 Audi A8 Quattro, N/A

Quality Assurance

Rein Automotive designs this thermostat housing assembly to meet or exceed OE material standards and to provide consistent, temperature-calibrated operation. The focus on OE-quality construction supports dependable service life for Audi cooling system repairs.