Standard Ignition RY-278 Engine Control Module Relay

Engine Control Module Relay for Ford and Mazda

Standard Ignition RY-278 is an engine control module (ECM) relay built for 12-volt systems that need reliable switching in the engine bay. It uses a female rectangular connector, 4 male blade terminals, and a 20 amp amperage rating for direct-fit service on select Ford and Mazda applications.

This part cross-references Davico Mfg 19352 for the same application.

Key Features

• Engine control module (ECM) relay for under-hood electrical control
• 12-volt relay with 20 amp amperage rating
• Female rectangular connector with 4 male blade terminals
• Composite housing helps protect against heat and severe engine bay conditions
• Brass or copper contacts are used where specified for wear resistance
• Manufactured under TS16949 and ISO9001 certified quality systems
• Standard Ignition RY-278 for select Ford Probe, Mazda 626, and Mazda MX-6 applications

Detailed Description

Standard Ignition RY-278 is an ECM relay used to control electrical power delivery in the engine management circuit. It is built with a composite housing for durability in harsh under-hood environments and uses quality-controlled manufacturing processes from component to finished part. For buyers searching for a Ford Probe ECM relay, Mazda 626 relay, or Mazda MX-6 engine control relay, this part number provides a direct replacement option for the listed vehicles.

Fitment includes 1994-1997 Ford Aspire, 1993-1997 Ford Probe, 1993-1997 Mazda 626, and 1993-1997 Mazda MX-6. Standard Ignition RY-278 is also a relevant search term for technicians replacing a failed ECM relay on these vehicles.

What It Helps Solve

• Intermittent or no-start conditions caused by relay failure
• Loss of ECM power delivery
• Electrical switching problems in the engine control circuit
• Heat-related relay degradation in the engine bay
• Faults traced to worn relay contacts or damaged terminals

Installation Notes and Tips

Verify connector shape, terminal count, amperage rating, and voltage before installation. Match the relay to the vehicle’s original ECM relay location and inspect the harness terminals for corrosion, looseness, or heat damage before connecting the new part. For fitment-based searches, this relay fits 1993-1997 Ford Probe, 1993-1997 Mazda 626, and 1993-1997 Mazda MX-6, with 1994-1997 Ford Aspire also listed in the application range.

Quality Assurance

Standard Ignition manufactures this relay under TS16949 and ISO9001 certified processes with quality control maintained throughout production. The brand notes the use of durable housing materials and specified brass or copper contacts to support long service life in demanding engine bay conditions.