Calorstat RC0060 Radiator Cap

Calorstat RC0060 Radiator Cap Overview

The Calorstat RC0060 is a standard radiator cap built with stainless steel and rubber for dependable sealing at the radiator filler neck. It uses a cam-on attachment type and a silver finish, with OEM performance grade construction for vehicles that require a 1.49-inch filler neck inside diameter and a 9.0 psi pressure rating.

Compatible with select Chevrolet G20 and G30, plus GMC G2500 and G3500 applications, the RC0060 is a direct-fit radiator cap for cooling system service where the original pressure specification must be maintained. The Calorstat RC0060 is a practical replacement for worn or leaking caps on these GM vans and trucks.

Key Features

• Part number: RC0060
• Radiator cap type: standard
• Material: stainless steel and rubber
• Attachment type: cam on
• Filler neck inside diameter: 1.49 in.
• Maximum pressure: 9.0 psi
• OEM performance grade
• Round shape with silver cap finish

Detailed Product Description

This Calorstat radiator cap is engineered for cooling systems that use a 1.49-inch filler neck and a 9.0 psi pressure specification. Its stainless steel and rubber construction supports secure sealing at the radiator neck, while the cam-on design provides the correct attachment style for the listed applications. If you are sourcing a radiator cap for Chevrolet G20, Chevrolet G30, GMC G2500, or GMC G3500 models, RC0060 matches the required fitment and pressure rating.

This part cross-references Febi-Bilstein 31521 for the same application.

What It Helps Address

• Coolant loss from a cap that no longer seals properly
• Pressure control issues in the radiator system
• Steam or overflow caused by a weak cap spring or seal
• Service replacement for a damaged or corroded radiator cap
• Restoring correct cap fit on the specified GM cooling system

Installation Notes and Tips

Verify the radiator filler neck inside diameter before installation and confirm the vehicle uses a 9.0 psi cap specification. Inspect the sealing surface, neck lip, and rubber seal for debris or damage before installing the RC0060. Make sure the cap is fully seated and locked in place with the cam-on attachment.

Compatible with 1983-1991 Chevrolet G20, N/A; 1983-1991 Chevrolet G30, N/A; 1983-1991 GMC G2500, N/A; and 1983-1991 GMC G3500, N/A. For these Chevrolet and GMC applications, the RC0060 should be matched to the original cooling system pressure requirement.

Quality Assurance

Calorstat manufactures cooling system components to OEM performance standards, making RC0060 a suitable replacement for service work where original-style fit and pressure rating are required.