OE Quality
60-Day Returns

Standard Ignition RY-401 Engine Control Module Relay
Reliable Engine Control Module Relay for Dodge and Mitsubishi Vehicles
The Standard Ignition RY-401 Engine Control Module (ECM) Relay is designed to provide dependable performance for select Dodge and Mitsubishi models. This relay ensures proper power delivery to the ECM, supporting optimal engine management and vehicle operation.
- Compatible with Dodge Ram 50, Dakota, and Sigma models
- Fits Mitsubishi Diamante, Galant, Mighty Max, Montero, Raider, and Stealth vehicles
- Part number RY-401 for precise identification and fitment
- Engine Control Module (ECM) relay type for critical engine system functions
- Durable construction to withstand automotive operating conditions
Product Overview and Compatibility
The Standard Ignition RY-401 ECM relay is engineered to meet the electrical requirements of various Dodge and Mitsubishi vehicles. This relay plays a crucial role in controlling the power supply to the engine control module, which manages engine timing, fuel injection, and other vital functions. Compatible with models such as the Dodge Ram 50 and Mitsubishi Montero, this relay ensures consistent engine performance and reliability.
Common Applications and Problem Resolution
- Restores proper ECM power supply in Dodge Ram 50 and Mitsubishi Raider vehicles
- Resolves intermittent engine starting issues related to faulty ECM relay
- Eliminates engine stalling caused by relay failure in Mitsubishi Galant and Stealth
- Prevents electrical faults affecting engine control systems in Dodge Sigma
- Supports stable engine operation by maintaining relay circuit integrity
Installation Notes and Tips
When installing the Standard Ignition RY-401 relay, ensure the vehicle's battery is disconnected to prevent electrical shorts. Locate the ECM relay in the fuse box or relay panel specific to your Dodge or Mitsubishi model. Verify the part number RY-401 matches the original relay before installation. Proper seating of the relay terminals is essential for reliable operation. Consult the vehicle’s service manual for detailed relay location and replacement procedures.
Quality Assurance and Warranty Information
Standard Ignition manufactures the RY-401 ECM relay to meet or exceed OEM specifications, ensuring compatibility and durability. Each relay undergoes rigorous testing to confirm electrical performance and longevity. This product is backed by Standard Ignition’s limited warranty, providing coverage against defects in materials and workmanship under normal use.
| Brand | Standard Ignition |
| Part Number | RY-401 |
| Amperage Rating | 10 |
| Connector Gender | Female |
| Connector Shape | Rectangular |
| Contents | Relay |
| Continuous Duty | No |
| Functions | Relay |
| Mounting Bracket(s) Included | No |
| Terminal Gender | Male |
| Terminal Type | Blade |
| Voltage | 12 |
This part fits 27 vehicles. Search below:
| Year | Make | Model | Submodel | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 1996 | Dodge | Stealth | N/A | ||||
| 1995 | Dodge | Stealth | N/A | ||||
| 1995 | Mitsubishi | Montero | N/A | ||||
| 1994 | Dodge | Stealth | N/A | OE No. E8T07871 | |||
| 1994 | Mitsubishi | Mighty Max | 3.0L | V6 | N/A | ||
| 1994 | Mitsubishi | Montero | N/A | ||||
| 1993 | Dodge | Stealth | N/A | ||||
| 1993 | Mitsubishi | Diamante | N/A | ||||
| 1993 | Mitsubishi | Mighty Max | 3.0L | V6 | N/A | ||
| 1993 | Mitsubishi | Montero | N/A | ||||
| 1992 | Dodge | Stealth | N/A | ||||
| 1992 | Mitsubishi | Diamante | N/A | ||||
| 1992 | Mitsubishi | Mighty Max | 3.0L | V6 | N/A | ||
| 1992 | Mitsubishi | Montero | N/A | ||||
| 1991 | Dodge | Ram 50 | 3.0L | V6 | N/A | ||
| 1991 | Dodge | Stealth | N/A | ||||
| 1991 | Mitsubishi | Mighty Max | 3.0L | V6 | N/A | ||
| 1991 | Mitsubishi | Montero | N/A | ||||
| 1990 | Dodge | Ram 50 | 3.0L | V6 | N/A | ||
| 1990 | Mitsubishi | Mighty Max | 3.0L | V6 | N/A | ||
| 1990 | Mitsubishi | Montero | N/A | ||||
| 1990 | Mitsubishi | Sigma | N/A | ||||
| 1989 | Dodge | Raider | N/A | ||||
| 1989 | Mitsubishi | Montero | N/A | ||||
| 1989 | Mitsubishi | Sigma | N/A | ||||
| 1988 | Mitsubishi | Galant | N/A | ||||
| 1988 | Mitsubishi | Galant | Sigma | N/A |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.