Four Seasons 37506 Engine Cooling Fan Controller

Radiator Fan Controller for Ford Applications

Four Seasons 37506 is a 12-volt radiator fan controller built for engine cooling fan relay applications. It uses an 8-terminal male blade connection, a black cover, and a 30-amp amperage rating to support proper fan control in the cooling system.

Part of the Four Seasons Rad Fan Controller line, this component is an OE-style replacement that meets or exceeds OEM requirements. It is a direct-fit style solution for select Ford Mustang, Ford Thunderbird, Ford Festiva, Mercury Capri, Mercury Marquis, and Mercury Zephyr applications listed below.

Key Features

• Four Seasons Rad Fan Controller line
• Part number 37506
• 12-volt radiator fan controller
• 30-amp amperage rating
• 8-terminal male blade connector
• Black cover
• Bracketless design
• Meets or exceeds OEM specifications
• Relay-style cooling fan control

Detailed Description

Four Seasons 37506 is an engine cooling fan controller used in radiator fan relay circuits to manage fan operation based on vehicle cooling demands. It is built with a blade-style terminal layout and a 12-volt electrical design, making it suitable for factory-style replacement in supported Ford and Mercury platforms. This part cross-references AMS Automotive 4752 and Anchor 2871 for the same application.

Compatible With 1988-1993 Ford Festiva, controller relay; rad fan controller. Compatible With 1986-1990 Ford Mustang, controller relay; rad fan controller. Compatible With 1983-1986 Ford Thunderbird, controller relay; rad fan controller. Compatible With 1985-1986 Mercury Capri, controller relay; rad fan controller. Compatible With 1984 Ford Mustang, controller relay; federal emissions; w/ AC; rad fan controller. Compatible With 1983-1984 Mercury Marquis, controller relay; w/ AC; rad fan controller. Compatible With 1982-1983 Mercury Zephyr, controller relay; w/ AC; rad fan controller.

What It Helps Address

• Cooling fan relay failure
• Intermittent radiator fan operation
• Fan staying on or not switching on at the correct time
• Electrical control issues in the cooling system
• Replacement needs for aging factory fan controller hardware

Installation Notes and Tips

Verify connector style, terminal count, amperage rating, and vehicle application before installation. This controller uses male blade terminals and does not include a bracket. Confirm the existing fan relay circuit and match the part to the exact year, make, model, and notes shown for your Ford Mustang, Ford Thunderbird, or other listed application.

Quality Assurance

Four Seasons identifies this radiator fan controller as meeting or exceeding OEM requirements, supporting OE-style fit and electrical performance for the listed applications.