Gates 31524 Radiator Cap

OE Type Radiator Cap for Classic Cooling Systems

The Gates 31524 OE Type Radiator Cap is built for older cooling systems that call for a low-pressure, standard-style cap. With a 4 psi pressure rating and OE performance comparison, it supports accurate system pressure control for select vintage Toyota, Ford, Chevrolet, Chrysler, and Pontiac applications.

Gates radiator pressure caps in the OE Type Radiator Cap line use corrosion-resistant metal or high-quality plastic, depending on application, to support long service life and consistent sealing. The 31524 is a standard cap with OE-style fit, form, and function for specific radiator filler neck dimensions.

Key Features

• Part number 31524
• OE Type Radiator Cap from Gates
• Standard cap design
• 4 psi pressure rating with SAE range of 3-5 psi
• OE performance comparison rating
• Filler neck inside diameter: 1.61 in. / 41 mm
• Filler neck outside diameter: 2.13 in. / 54 mm
• Filler neck depth: 0.75 in. / 19 mm
• Shell diameter: 3.13 in.
• Coolant recovery system: optional system

Product Details

This radiator cap is intended for vehicles that require a low-pressure OE-style cap, including Fits 1968 Toyota Corolla, N/A; Fits 1968 Toyota Corona, N/A; Fits 1953-1956 Ford F-100, N/A; Fits 1953-1956 Ford F-250, N/A; Fits 1953-1956 Ford F-350, N/A; Fits 1953 Chevrolet Bel Air, N/A; Fits 1949-1950 Chrysler Imperial, N/A; Fits 1949-1950 Chrysler New Yorker, N/A; Fits 1949-1950 Chrysler Town & Country, N/A; and Fits 1950 Pontiac Catalina, N/A. The Gates 31524 is also a direct reference point for classic cooling system service where the original cap specification matters.

This part cross-references Four Seasons 11208 and Standard Ignition BR-8 for the same application.

Common Cooling Issues It May Address

• Loss of radiator pressure from a worn or weak cap
• Coolant seepage at the filler neck seal surface
• Pressure control problems in low-pressure vintage cooling systems
• Improper cap fit on the specified filler neck dimensions
• Cooling system service needs on classic Ford, Toyota, Chrysler, Chevrolet, and Pontiac models

Installation Notes and Tips

Verify filler neck inside diameter, outside diameter, and depth before installation. The Gates 31524 is a standard cap for applications with a 1.61 in. inside diameter, 2.13 in. outside diameter, and 0.75 in. filler neck depth. Confirm the vehicle uses a 4 psi cap specification and inspect the radiator neck, gasket surface, and sealing area for wear or corrosion before installing.

Quality Assurance

Gates manufactures this radiator cap to meet or exceed OEM specifications in function, form, and fit. The construction uses corrosion-resistant materials selected for the application, and the design meets environmental regulatory standards intended to reduce air pollution.