Calorstat RC0033 Engine Coolant Reservoir Cap

Engine Coolant Reservoir Cap for Volvo Cooling Systems

Calorstat RC0033 is a pressurized engine coolant reservoir cap built with plastic and rubber for a threaded coolant tank connection. It is specified at a 22.0 pressure rating and is designed for Volvo cooling system applications that require a standard-style reservoir cap.

Key Features

• Pressurized coolant reservoir cap with a 22.0 pressure rating
• Threaded attachment type for secure tank engagement
• Plastic and rubber construction for sealing and durability
• Standard cap design for engine coolant reservoir service
• Calorstat RC0033 part number for direct identification

Product Details

This engine coolant reservoir cap helps maintain the cooling system pressure needed for proper coolant circulation and temperature control. Calorstat RC0033 is a direct-fit style replacement for select Volvo models, including Volvo XC90, Volvo S60, Volvo V70, Volvo XC70, Volvo S80, Volvo C70, Volvo S40, Volvo V40, Volvo S70, Volvo S90, Volvo V90, Volvo 850, Volvo 960, and Volvo 940. Vernet is an OE supplier to Volvo, and this cap follows that application focus for Volvo cooling system service. This part cross-references Gates 31329 for the same application.

Common Issues This Part Can Address

• Coolant loss from a worn or weakened reservoir cap seal
• Pressure retention problems in the cooling system
• Steam or overflow caused by a cap that no longer holds pressure
• Loose or damaged threaded cap engagement
• Cooling system service needs on Volvo reservoir assemblies

Installation Notes and Tips

Verify the reservoir neck thread pattern and pressure specification before installation. Inspect the coolant tank sealing surface, cap gasket area, and surrounding hoses for wear or damage. Install the cap on a cool engine and confirm it seats fully without cross-threading. For Volvo XC90, Volvo S60, and Volvo V70 cooling system repairs, matching the correct pressure rating is important for proper operation.

Quality Assurance

Calorstat RC0033 is built as a pressurized coolant reservoir cap using plastic and rubber materials with a threaded design. Its OE-supplier application context for Volvo supports accurate fitment selection for maintenance and replacement service.