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Four Seasons 37503 Engine Cooling Fan Motor Relay
| Brand | Four Seasons 37503 |
|---|---|
| Amperage Rating | 30 |
| Bracket? | w/ Bracket |
| Cover Color | Black |
| Description | Relays |
| Meets / Exceeds OEM? | Yes |
| Style | Radiator Fan Controller |
| Terminal Gender | Male |
| Terminal Quantity | 10 |
| Terminal Type | Spade |
| Type | Radiator Fan Controller |
| Voltage | 12 |
| Product line | Rad Fan Controller |
| Fits | Mercury and Ford · 10 vehicles |
OE direct replacement. Meets OEM requirements for straightforward replacement.
Radiator fan controller. Helps manage cooling fan operation with 12-volt control.
Bracket included. Comes with a mounting bracket for easier installation.
Cross-references AMS Automotive 4755, Anchor 2884 and BBB Industries 14307 for the same application. See all 23.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Four Seasons 37503 Radiator Fan Controller
The Four Seasons Rad Fan Controller 37503 is a 12-volt engine cooling fan motor relay built for radiator fan control in select Ford and Mercury applications. It features a black cover, 10 male spade terminals, a 30-amp rating, and a bracketed design for OE-style replacement service.
Key Features
- Brand: Four Seasons Rad Fan Controller
- Part number: 37503
- Engine cooling fan motor relay / radiator fan controller
- 12-volt electrical system
- 30-amp amperage rating
- 10 male spade terminals
- Black cover with bracket
- Meets or exceeds OEM requirements
Product Details
Four Seasons 37503 is a radiator fan controller relay used to manage electric cooling fan operation in vehicles that rely on controlled fan engagement for engine temperature regulation. This OE-style replacement is listed for 1988-1990 Ford Escort with air conditioning, 1988-1989 Mercury Tracer, 1987 Mercury Lynx with air conditioning, 1983 Ford Escort without high performance engine, and 1983 Mercury LN7 and Mercury Lynx. If you are searching for a Four Seasons 37503 radiator fan controller for Ford Escort or Mercury Tracer cooling system repair, this part matches the listed applications and electrical configuration.
This part cross-references Gates 42115 and Anchor 2884 for the same application.
What It Helps Address
- Cooling fan not switching on at the correct temperature
- Intermittent radiator fan operation
- Fan relay electrical failure
- Overheating caused by poor fan control
- Air-conditioning-related fan control issues on listed vehicles
Installation Notes and Tips
Verify terminal layout, connector style, amperage rating, and bracket configuration against the original relay before installation. Confirm the vehicle uses a 12-volt system and match the application notes for air conditioning or engine configuration, especially on 1983 Ford Escort and Mercury Lynx models. For best results, inspect the fan circuit, fuse protection, and wiring condition before replacing the controller.
Quality Assurance
Four Seasons lists this radiator fan controller as meeting or exceeding OEM requirements, supporting direct replacement use in the specified Ford and Mercury applications.
| Year | Make | Model | Transmission | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 1990 | Ford | Escort | — | — | — | N/A | w/ AC; Rad Fan Controller |
| 1989 | Ford | Escort | — | — | — | N/A | w/ AC; Rad Fan Controller |
| 1989 | Mercury | Tracer | — | — | — | N/A | Rad Fan Controller |
| 1988 | Ford | Escort | — | — | — | N/A | w/ AC; Rad Fan Controller |
| 1988 | Mercury | Tracer | — | — | — | N/A | Rad Fan Controller |
| 1987 | Mercury | Lynx | — | 1.9L | L4 | N/A | Controller Relay; w/ AC; Rad Fan Controller |
| 1983 | Ford | Escort | Manual | 1.6L | L4 | N/A | w/o High Performance Engine; Rad Fan Controller |
| 1983 | Mercury | LN7 | — | 1.6L | L4 | N/A | Rad Fan Controller |
| 1983 | Mercury | Lynx | Automatic | 1.6L | L4 | N/A | Controller Relay; Rad Fan Controller |
| 1983 | Mercury | Lynx | Manual | 1.6L | L4 | N/A | Controller Relay; Rad Fan Controller |
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