Standard Ignition RY-375 Engine Cooling Fan Motor Relay

Engine Cooling Fan Relay for Mazda and Ford

Standard Ignition RY-375 is a 12-volt engine cooling fan motor relay with a 10-amp rating and a rectangular female connector. It uses a 5-blade male terminal layout and is built for blower motor function in supported applications. This relay is a direct-fit service part for select Mazda MPV, Mazda Protege, Ford Escort, and Mercury Tracer models.

Key Features

• Part number: RY-375
• 12-volt relay with 10-amp amperage rating
• Female rectangular connector with 1 connector cavity
• 5 male blade terminals for vehicle-specific electrical connection
• Functions as a blower motor relay in listed applications
• No mounting bracket included
• Standard Ignition replacement part for cooling and HVAC relay service

Detailed Description

Standard Ignition RY-375 is an electrical relay used in cooling and blower motor circuits where the original relay has failed or is no longer switching power correctly. In fitments such as the 1991-1996 Ford Escort low speed engine fan application and the 1991-1996 Mercury Tracer low speed engine fan application, this relay helps restore proper circuit control. It also cross-references Four Seasons 20453 for the same application. The RY-375 part number is also listed among interchange references for service matching on select Mazda MPV, Mazda Protege, Mazda 929, and Mazda MX-3 applications.

Compatible With select 1989-1990 Mazda MPV, 1992-1998 Mazda Protege, 1991-1996 Ford Escort, 1991-1996 Mercury Tracer, 1992-1995 Mazda 929, and 1992-1994 Mazda MX-3 applications. Fits 1996-1998 Mazda MPV, N/A; Fits 1989-1990 Mazda MPV, N/A; Fits 1992-1998 Mazda Protege, N/A; Fits 1991-1996 Ford Escort, N/A; Fits 1991-1996 Mercury Tracer, N/A; Fits 1992-1995 Mazda 929, N/A; Fits 1992-1994 Mazda MX-3, N/A; Fits 1991-1993 Mercury Tracer, N/A.

What It Helps Address

• Cooling fan relay failure causing inconsistent fan operation
• Blower motor relay issues that interrupt HVAC airflow control
• Low speed engine fan circuit problems on listed Ford Escort and Mercury Tracer applications
• Electrical switching faults caused by worn relay contacts
• Intermittent relay operation from heat and age-related wear

Installation Notes and Tips

Verify connector shape, terminal count, and amperage rating before installation. Match the relay to the original vehicle connector and circuit function, especially on Ford Escort and Mercury Tracer low speed engine fan applications. Inspect the relay socket for corrosion, heat damage, or loose terminals before installing the new part. Confirm the vehicle year and model against the fitment list to ensure the correct application.

Quality Assurance

Standard Ignition supplies replacement electrical components for service use, and this relay is built to match the listed application requirements for connector style, terminal layout, and voltage specification.