Calorstat RC0016 Engine Coolant Reservoir Cap - Battery

Engine Coolant Reservoir Cap for Nissan and Mitsubishi

The Calorstat RC0016 engine coolant reservoir cap is a threaded, pressurized replacement cap built with plastic and rubber construction. It is specified at 20.0 pressure rating and is used on a wide range of Nissan, INFINITI, Mitsubishi, and Smart applications, including Nissan Rogue, Sentra, and ARIYA models.

• Material: plastic and rubber
• Maximum pressure rating: 20.0
• Threaded attachment type for secure reservoir fitment
• Standard pressurized design
• No pressure release lever

Reservoir Cap Function and Fitment

This engine coolant reservoir cap helps maintain the cooling system’s pressure balance and seals the expansion tank opening on supported vehicles. The RC0016 is a direct-fit style coolant reservoir cap for applications such as Fits 2024-2025 Nissan ARIYA, N/A; Fits 2025 Nissan Kicks, N/A; Fits 2024-2025 Nissan Rogue, N/A; and Fits 2024-2025 Nissan Sentra, N/A. It also covers additional OE-style applications across Nissan, INFINITI, Mitsubishi, and Smart platforms. This part cross-references 1375A307 and 21430AX30A for the same application.

• Helps restore proper coolant reservoir sealing
• Supports correct system pressure retention
• Addresses coolant loss from a worn or damaged cap
• Can resolve pressure-related cooling system warnings
• May correct overflow or venting concerns caused by a weak seal

Installation Notes and Tips

Verify the reservoir neck style, thread engagement, and pressure specification before installation. Match the cap to the vehicle application and confirm the reservoir is clean and free of cracks or damaged sealing surfaces. For Nissan Rogue, Sentra, and ARIYA fitments, confirm the OE-style cap specification before replacement. The RC0016 is also listed for select INFINITI Q50 and Q70 applications, along with Mitsubishi Outlander PHEV and Smart Fortwo/EQ fortwo coverage.

Quality Assurance

Calorstat is listed as an OE supplier for several of the referenced Nissan and INFINITI applications, and this cap follows the specified pressurized, threaded design used in those cooling system setups.