Rein CTA0013 Engine Coolant Thermostat Housing Assembly

Brand Rein CTA0013
Application Type Applicationspecific
Bullet Point 1 Matches original equipment design specifications
Bullet Point 2 Direct fitments allows easy installation
Bullet Point 3 Manufactured to strict engineering standards/specifications in ma
Bullet Point 4 Thermostat set to 92 degrees celsius to maintain optimal running
Container Type Bx
Country of Origin Cn
Item Height 3.2500
Item Length 7.0000
Item Level GTIN 843266076040
Item Qty 1
Item Quantity Size 1
Item Quantity Size UOM Ea
Item UOM Ea
Item Weight 0.7700
Item Weight Unit UOM Lb
Item Width 5.0000
Product Desc Extended 240 Rein oe quality thermostat inserts are designed to be direct repl
Product Desc Invoice 40 Rein thermostat assembly
Product Desc Long 80 Rein oe quality thermostat assembly
Product Desc Short 20 Thermostat assembly
Fits Audi · 15 vehicles

OE quality assembly. Matches original equipment design specs for a smooth, easy installation.

Direct fit. Allows easy installation with no modifications needed.

Temperature calibrated. Set to 92°C for consistent cooling system response.

Cross-references 06C121111C, 06C121111D and 06C121111E for the same application. See all 3.

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OE Quality Thermostat Housing Assembly

Rein CTA0013 is an OE quality engine coolant thermostat housing assembly built for direct replacement service. It is engineered to match original equipment design specifications and maintain the factory cooling system response for Audi A4, Audi A4 Quattro, Audi A6, and Audi A6 Quattro applications.

Fits 2002-2006 Audi A4 Quattro, N/A. Fits 2002-2005 Audi A4, N/A. Fits 2002-2004 Audi A6, N/A. Fits 2002-2004 Audi A6 Quattro, N/A.

Key Features

  • Matches original equipment design specifications
  • Direct fitment for easier installation
  • Built to strict engineering standards for materials and tolerances
  • Thermostat calibrated to 92 degrees Celsius for stable operating temperature
  • Constructed to meet vehicle-specific factory requirements
  • Rein CTA0013 thermostat housing assembly for OE-style cooling system service

Detailed Description

This Rein thermostat housing assembly is manufactured as a direct OE replacement for vehicles that require a precise cooling system fit. The housing construction follows vehicle-specific factory requirements, using metal or plastic materials based on the original design. Molds are cast from OEM parts to help maintain the correct dimensions, which supports smooth installation and proper sealing at the cooling system interface. Rein CTA0013 is designed for Audi A4, Audi A4 Quattro, Audi A6, and Audi A6 Quattro models within the listed years, and it cross-references Audi part numbers 06C121111C and 06C121111D for the same application.

Common Cooling System Issues Addressed

  • Engine running too cool or too warm due to thermostat control issues
  • Coolant temperature instability during normal driving
  • Leaks at a worn or damaged thermostat housing
  • Poor fitment from an incorrect replacement housing
  • Cooling system service needs on Audi A4, Audi A4 Quattro, Audi A6, and Audi A6 Quattro models

Installation Notes and Tips

Verify the OE part number and vehicle application before installation. Inspect the mating surfaces, coolant passages, and related seals or hoses for wear or contamination before reassembly. Because this is an application-specific thermostat housing assembly, correct alignment and torque procedure are important for a proper seal and reliable cooling system operation.

Quality Assurance

Rein designs its thermostat assemblies to meet or exceed OE material standards and to deliver consistent temperature response for cooling system service. The housing and thermostat are produced to factory-style tolerances to support dependable fit and service life in the specified Audi applications.

This part fits 15 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2006AudiA4 Quattro3.0LV6N/A—
2005AudiA43.0LV6N/A—
2005AudiA4 Quattro3.0LV6N/A—
2004AudiA43.0LV6N/A—
2004AudiA4 Quattro3.0LV6N/A—
2004AudiA63.0LV6N/A—
2004AudiA6 Quattro3.0LV6N/A—
2003AudiA43.0LV6N/A—
2003AudiA4 Quattro3.0LV6N/A—
2003AudiA63.0LV6N/A—
2003AudiA6 Quattro3.0LV6N/A—
2002AudiA43.0LV6N/A—
2002AudiA4 Quattro3.0LV6N/A—
2002AudiA63.0LV6N/A—
2002AudiA6 Quattro3.0LV6N/A—
Directly replaces or cross-references 3 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
06C121111C06C121111D06C121111E