Gates 31525 Radiator Cap

OE Type Radiator Cap for Chrysler, Dodge, Jeep

The Gates 31525 OE Type Radiator Cap is built to maintain proper cooling-system pressure with an 18 psi rating and OE performance standards. It is a direct-fit style radiator cap for a wide range of Chrysler, Dodge, Jeep, Ram, and select GM applications, including Dodge Durango, Jeep Grand Cherokee, and Chrysler 300.

Key Features

• Standard radiator cap with 18 psi pressure rating
• OE performance rating for function, form, and fit
• Corrosion-resistant metal or high-quality plastic construction, depending on application
• 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: 2.33 in.
• Coolant recovery system: optional system

Detailed Description

Gates OE Type Radiator Cap 31525 is engineered to meet or exceed OEM specifications in function, form, and fit. The cap is designed for accurate pressure control in the cooling system, helping maintain the correct operating environment for vehicles such as the Dodge Durango, Jeep Grand Cherokee, and Chrysler 300. Gates uses corrosion-resistant heavy-gauge metal or quality plastic construction, depending on the application, to support long service life. This part cross-references Dorman - HELP 46044 for the same application.

What This Radiator Cap Helps Address

• Cooling-system pressure loss from a worn or weak cap
• Coolant overflow or improper pressure retention
• Pressure-related overheating concerns
• Seal wear at the radiator filler neck
• Replacement needs for OE-style service on Chrysler, Dodge, Jeep, and Ram vehicles

Installation Notes and Tips

Verify filler neck dimensions and pressure rating before installation. This cap is specified for an 18 psi system and uses a standard cap design with a 1.25 in. cap depth. Confirm the radiator or recovery tank neck matches the listed dimensions, especially on applications with an optional coolant recovery system. For fitment examples, this part fits 2011-2026 Dodge Durango, 1993-2021 Jeep Grand Cherokee, and 2005-2010 Chrysler 300.

Quality Assurance

Gates manufactures this radiator pressure cap to meet or exceed OEM specifications and environmental regulatory standards. The OE Type Radiator Cap line is built for consistent pressure control and dependable service across the listed vehicle applications.