Calorstat TS2900 Engine Cooling Fan Switch

Engine Cooling Fan Switch for Audi TT

The Calorstat TS2900 is an engine cooling fan switch built for temperature-based fan control in select Audi applications. It uses a 120 switch temperature setting and a 20 mm thread size, making it a direct-spec replacement for vehicles that require this configuration.

Key Features

• Engine cooling fan switch for thermal fan activation
• 120 switch temperature specification
• 20 mm thread size
• Single-speed operation
• Calorstat TS2900 part number for catalog matching

Detailed Description

The Calorstat TS2900 is an OE-style engine cooling fan switch used to trigger cooling fan operation when coolant temperature reaches the specified threshold. It is listed for 2000-2002 Audi TT and 2001-2002 Audi TT Quattro applications, with Vernet identified as an OE supplier to Audi. If you are sourcing a replacement Audi TT cooling fan switch or a Calorstat TS2900 for Audi TT Quattro fitment, this part number and thread specification are important for correct selection.

This part cross-references Champion Spark Plug 844 for the same application.

What It Helps Address

• Cooling fan not switching on at the proper temperature
• Cooling fan running inconsistently due to a failed temperature switch
• Overheating concerns tied to fan control faults
• Incorrect replacement selection caused by thread or temperature mismatch

Installation Notes and Tips

Verify the thread size, switch temperature, and vehicle application before installation. Match the original connector and mounting location on the cooling system, and confirm the cooling system is properly filled and bled after service. For fitment, use the listed applications: Fits 2000-2002 Audi TT, N/A and Fits 2001-2002 Audi TT Quattro, N/A.

Quality Assurance

Vernet is identified as an OE supplier to Audi for these applications, supporting OE-level fitment expectations for the Calorstat TS2900.