Gates 31530 Radiator Cap

OE Type Radiator Cap

This Gates radiator cap is built for closed coolant recovery systems and maintains an 18 psi pressure rating for accurate cooling-system control. It is an OE Type Radiator Cap, part number 31530, with fitment coverage for select Ford and Mercury applications.

Key Features

• Threaded coolant bottle cap design for secure sealing.
• 18 psi pressure rating for controlled system pressure.
• Closed-system application for coolant recovery setups.
• OE performance rating for form, fit, and function.
• Corrosion-resistant construction for long service life.

Detailed Description

Gates 31530 is an OE Type Radiator Cap engineered to meet or exceed OEM specifications in function, form, and fit. The cap uses a threaded design and is specified for a 2.28-inch filler neck inside diameter, 2.4-inch outside diameter, and .85-inch filler neck depth, making it a fitment-focused replacement for the correct cooling-system opening. Gates 31530 is a practical choice for drivers servicing a Ford Focus, Ford Transit Connect, or Ford Contour, as well as select Mercury Mystique applications.

This part cross-references Four Seasons (e.g., 33057, 46058) for the same application.

What It Is Used For

• Restoring proper radiator cap pressure control.
• Replacing a worn or leaking coolant bottle cap.
• Maintaining sealed operation in a closed coolant recovery system.
• Addressing pressure loss that can affect cooling-system performance.
• Supporting correct fitment on specified Ford and Mercury models.

Installation Notes and Tips

Verify the filler neck dimensions, pressure rating, and closed-system requirement before installation. Match the cap depth and neck diameter to the existing cooling-system opening for proper sealing. Confirm application details for your Ford Focus, Ford Transit Connect, Ford Contour, or Mercury Mystique before replacement.

Quality Assurance

Gates manufactures this cap to meet or exceed OEM specifications and to comply with environmental regulatory standards. The corrosion-resistant construction is intended to support accurate pressure control and dependable service life.