Calorstat RC0153 Radiator Cap

Radiator Cap for OEM-Style Cooling Control

The Calorstat RC0153 radiator cap is a standard cam-on cap built with stainless steel and rubber for dependable sealing at the filler neck. With a 16.0 psi maximum pressure rating and OEM performance grade, it is a direct-fit cooling system service part for a wide range of Chrysler, Dodge, Jeep, Plymouth, and Ram applications.

Use RC0153 when you need a radiator cap that matches the specified filler neck diameter and pressure requirement for vehicles such as the Dodge Durango, Ram 1500, and Jeep Grand Cherokee. The silver round design and cam-on attachment support a secure fit on the correct neck style.

Key Features

• Brand: Calorstat RC0153
• Material: stainless steel and rubber
• Color and finish: silver
• Attachment type: cam on
• Type: standard radiator cap
• Maximum pressure: 16.0 psi
• Filler neck inside diameter: 1.49 in
• Height: 1.1 in
• Shape: round
• Grade type: OEM performance

Detailed Description

Calorstat RC0153 is engineered as an OEM-performance radiator cap for cooling systems that call for a 1.49-inch filler neck inside diameter and a 16 psi pressure rating. Its stainless steel and rubber construction supports sealing integrity at the neck, while the cam-on attachment style helps the cap lock into place on the correct radiator or coolant reservoir opening. This part cross-references Gates 31523 and Motorad 1008-16 for the same application.

Compatible vehicle coverage includes many Chrysler, Dodge, Jeep, Plymouth, and Ram models across 1995-2025, including Dodge Durango, Dodge Charger, Jeep Grand Cherokee, and Ram 1500. For fitment-specific applications, this cap is listed for 2022-2024 Dodge Durango, 2012-2023 Ram 1500, 2011-2020 Jeep Grand Cherokee, and 2015-2017 Dodge Charger, among many others.

What It Helps Address

• Loss of cooling system pressure from a worn or weak cap
• Coolant seepage at the radiator filler neck seal
• Incorrect cap fitment on a 1.49-inch neck
• Pressure control issues on 16 psi cooling systems
• Service replacement for OEM-style radiator cap applications

Installation Notes and Tips

Verify the filler neck inside diameter, attachment style, and pressure rating before installation. RC0153 is listed for cam-on applications and should be matched to vehicles calling for a 1.1 bar / 16 psi cap. Confirm the neck condition is clean and free of damage so the seal can seat properly. Fits 2022-2024 Dodge Durango, N/A. Fits 2012-2023 Ram 1500, N/A. Fits 2011-2020 Jeep Grand Cherokee, N/A.

Quality Assurance

Calorstat RC0153 is built to OEM performance specifications for the listed applications and uses stainless steel and rubber materials selected for cooling system service. The part number RC0153 is also referenced in multiple OE and aftermarket catalogs for the same fitment family.