Calorstat RC0082 Engine Coolant Reservoir Cap

Engine Coolant Reservoir Cap for OE-Style Cooling Service

The Calorstat RC0082 engine coolant reservoir cap is a threaded, pressurized replacement cap built for cooling systems that require a 22 PSI opening pressure. Made from plastic and rubber, it helps maintain proper system pressure for Audi, Volkswagen, and other listed applications.

Use this Calorstat RC0082 cap when you need a direct-fit coolant reservoir cap for select Audi Q7, Volkswagen Touareg, and Volkswagen Passat models. Vernet is an OE supplier to Audi and Volkswagen for the listed applications.

Key Features

• Engine coolant reservoir cap with threaded attachment
• Standard pressurized design
• 22 PSI opening pressure
• Maximum pressure rating: 22.0
• Plastic and rubber construction
• No pressure release lever
• Part number: RC0082

Fitment Details

• Fits 2007-2010 Audi Q7, N/A. Vernet is an OE supplier to Audi.
• Fits 2004-2009 Volkswagen Touareg, N/A. Vernet is an OE supplier to Volkswagen.
• Fits 2002-2004 Volkswagen Passat, N/A. Vernet is an OE supplier to Volkswagen.

What This Part Helps Address

• Coolant loss from a worn or damaged reservoir cap
• Pressure loss in the cooling system
• Improper cap sealing at the expansion tank
• Cooling system service on Audi Q7, Volkswagen Touareg, and Volkswagen Passat applications
• Replacement of a cap that no longer holds the specified 22 PSI pressure

Installation Notes and Tips

Confirm the reservoir neck style and pressure specification before installation. Thread the cap on fully and inspect the sealing surfaces for cracks, debris, or hardened rubber that could affect sealing. Verify the cooling system is at the correct service condition before opening the cap.

Quality Assurance

Calorstat is associated with Vernet OE supply for Audi and Volkswagen applications, supporting OE-style fitment and pressure control for the listed vehicles. Part number RC0082 also cross-references 1C9121321 for the same application.