Standard Ignition RY-401 Engine Control Module Relay

Engine Control Module Relay for OE-Style Power Control

Standard Ignition RY-401 is an engine control module (ECM) relay built for 12-volt systems with a 10 amp amperage rating. It uses a rectangular female connector with 2 connector positions and male blade terminals for direct electrical interface in supported applications.

Use this ECM relay when diagnosing power delivery issues in vehicles such as the Dodge Stealth, Mitsubishi Montero, and Mitsubishi Mighty Max. The Standard Ignition RY-401 is a direct-fit relay replacement for select import applications that require reliable ECM circuit switching.

Key Features

• Engine Control Module (ECM) relay for 12 V systems
• 10 A amperage rating for controlled circuit operation
• Rectangular female connector with 2 connector positions
• Male blade terminals with 9 terminal locations
• Relay-only contents; mounting bracket not included
• Cross-reference: Four Seasons 20470

Application Details

This Standard Ignition RY-401 relay is used in select Dodge and Mitsubishi vehicles, including Fits 1995-1996 Dodge Stealth, N/A; Fits 1991-1993 Dodge Stealth, N/A; Fits 1994 Dodge Stealth, N/A; Fits 1989-1995 Mitsubishi Montero, N/A; and Fits 1990-1994 Mitsubishi Mighty Max, N/A. It also applies to other listed Mitsubishi and Dodge models in the same fitment set, including Mitsubishi Diamante, Ram 50, Raider, Sigma, and Galant.

For buyers searching for a Dodge Stealth ECM relay or a Mitsubishi Montero engine control module relay, RY-401 provides the specified connector style, terminal layout, and voltage rating needed for the original circuit design. OE reference E8T07871 is listed for the 1994 Dodge Stealth application.

Common Problems This Relay Can Address

• Intermittent ECM power delivery
• No-start condition caused by relay failure
• Engine control circuit dropout
• Electrical switching faults in the ECM relay circuit
• Hard starting related to relay contact wear

Installation Notes

Verify connector shape, terminal count, and amperage rating before installation. Compare the existing relay and vehicle connector to the part specifications, especially on Mitsubishi Montero, Mitsubishi Mighty Max, and Dodge Stealth applications. Confirm the OE number when replacing an original relay with a known reference such as E8T07871.

Quality Assurance

Standard Ignition supplies this relay as an OE-style electrical replacement for the listed applications. Review the vehicle fitment and electrical specifications before installation to ensure the relay matches the original ECM circuit requirements.