Beck Arnley 143-0709 Engine Coolant Thermostat

Engine Coolant Thermostat for Audi and Volkswagen

Beck Arnley 143-0709 is an engine coolant thermostat built to foreign nameplate OE specifications for form, fit, and function. It is a 190-degree thermostat with the housing not included, and it includes the gasket/seal needed for OE-style service on select Audi and Volkswagen applications.

Key Features

• 190-degree engine coolant thermostat
• Housing not included
• Includes gasket/seal
• OE fitment for select Audi and Volkswagen models
• Beck Arnley part number 143-0709

Detailed Description

Beck Arnley 143-0709 is a direct-fit coolant thermostat for a wide range of Audi A4, A6 Quattro, A8 Quattro, Allroad Quattro, S4, S6, S8, RS6, Cabriolet, 90, 90 Quattro, 100, and V8 Quattro applications, plus select Volkswagen Touareg, Phaeton, Jetta, Golf, and Passat models. The 190-degree temperature rating supports factory-style engine warm-up and cooling system regulation, while the included gasket/seal helps support a proper seal during replacement. This part number is a practical OE-style choice when servicing cooling system temperature control on Audi and Volkswagen vehicles.

This part cross-references with a limited number of OE-style replacement listings for the same application.

Common Problems This Part Addresses

• Engine running too cool or too warm due to thermostat wear
• Temperature fluctuations during normal driving
• Cooling system service after thermostat housing inspection
• Coolant seepage at the thermostat seal area
• Delayed engine warm-up on Audi and Volkswagen cooling systems

Installation Notes and Tips

Verify the 190-degree temperature specification before installation, especially on 1998-2004 Volkswagen Jetta applications noted with alternate temperature requirements. Inspect the mating surfaces carefully and replace the thermostat only after the cooling system has cooled completely. Because the housing is not included, confirm that your existing housing is serviceable before beginning the repair. Use the vehicle-specific fitment notes for Audi A4, A6, A8, and related models to confirm the correct application for your engine.

Quality Assurance

Beck Arnley sources parts to meet foreign nameplate OE specifications for form, fit, and function, with product specialists working through global sourcing partners to help ensure the correct replacement part is selected for the application.