Calorstat RC0152 Radiator Cap

Calorstat RC0152 Radiator Cap Overview

The Calorstat RC0152 is a standard radiator cap built with stainless steel and rubber for a secure seal at the filler neck. It is rated to 21.0 psi and uses a cam-on attachment type, making it a direct service part for select Chrysler, Dodge, Jeep, and Porsche applications.

Use this radiator cap when you need an OEM performance replacement for vehicles such as the Dodge Viper, Dodge Challenger, Dodge Charger, Jeep Grand Cherokee, Chrysler 300, Chrysler Aspen, Dodge Durango, Dodge Dakota, and Porsche 968. The RC0152 is sized for a 1.49-inch filler neck inside diameter and features a silver round finish.

Key Features

• Part number: RC0152
• Material: stainless steel and rubber
• Maximum pressure: 21.0 psi / 1.45 bar
• Attachment type: cam on
• Filler neck inside diameter: 1.49 in.
• Standard round design with silver cap finish
• OEM performance grade

Detailed Description

The Calorstat RC0152 radiator cap is engineered to maintain proper cooling-system pressure and help preserve the radiator’s operating range. Its stainless steel and rubber construction supports a reliable seal, while the 21 psi pressure rating matches the listed OE-style application requirements for many late-model Dodge, Chrysler, Jeep, and Porsche vehicles. This part cross-references Gates (e.g., 31522, 31554) for the same application.

Compatible With 2015-2016 Dodge Viper, 2008-2010 Dodge Viper, 2011-2015 Dodge Challenger, 2012-2015 Dodge Charger, 2014-2015 Jeep Grand Cherokee, 2012-2014 Chrysler 300, 2007-2009 Chrysler Aspen, 2000-2009 Dodge Durango, 2000-2004 Dodge Dakota, and 1995 Porsche 968. The RC0152 part number is also referenced in OE-style interchange listings for select Chrysler and Dodge cooling-system service needs.

What It Helps Address

• Loss of cooling-system pressure from a worn or weak cap
• Coolant seepage at the radiator filler neck seal
• Pressure-related overheating concerns
• Cap fitment issues on a 1.49-inch filler neck
• Service replacement for a damaged or corroded radiator cap

Installation Notes and Tips

Verify the filler neck inside diameter, attachment style, and pressure rating before installation. Confirm that the sealing surfaces are clean and free of debris, then install the cap fully to ensure the cam-on mechanism locks correctly. For best results, compare the existing cap markings and vehicle cooling-system specifications before replacing the RC0152.

Quality Assurance

Calorstat lists this radiator cap as an OEM performance-grade part, built to meet the pressure and fit requirements shown in the application data. The RC0152 is specified for direct service use on the listed Chrysler, Dodge, Jeep, and Porsche models.