HomeEngine > RelaysStandard Ignition RY1974 Engine Control Module (ECM) Relay
Part #: RY1974

Standard Ignition RY1974 Engine Control Module (ECM) Relay

8 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Subaru and Toyota, 86 and BRZ
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Engine Control Module Relay for Subaru BRZ and Toyota 86

Standard Ignition RY1974 is an engine control module (ECM) relay built for 12-volt electrical systems. It features a square female connector, 8 male pin terminals, and a bolt-mount design with an included mounting bracket for a secure installation point.

Fits 2017-2020 Subaru BRZ and Fits 2017-2020 Toyota 86. This ECM relay is a direct replacement option for vehicles that need reliable relay control in the engine management circuit.

Key Features

  • Engine Control Module (ECM) relay for 12-volt systems
  • Square female connector with 8 male pin terminals
  • Bolt-mount design with one mounting hole
  • Bracket included for mounting support
  • Standard Ignition RY1974 part number for catalog matching
  • Cross-references Standard Ignition RY1974 for the same application

Detailed Description

Standard Ignition RY1974 is an ECM relay used in the engine control circuit to help manage electrical switching for the module. The relay uses a square connector layout with a single female connector and male pin terminals, making it a fitment-specific replacement for the listed Subaru BRZ and Toyota 86 model years. If you are searching for a 2017-2020 Subaru BRZ ECM relay or a 2017-2020 Toyota 86 engine control module relay, this part number provides a direct catalog match.

What It Can Help Resolve

  • Engine control module power or relay circuit faults
  • No-start conditions related to relay switching
  • Intermittent electrical operation in the ECM circuit
  • Relay-related diagnostic trouble codes
  • Loss of engine management power feed

Installation Notes and Tips

Verify connector shape, terminal count, and mounting style before installation. Confirm the vehicle uses a 12-volt ECM relay with the same bolt-mount layout and bracket arrangement. Match the part number RY1974 against the original relay and inspect the connector for corrosion, heat damage, or bent terminals before reconnecting.

Quality Assurance

Standard Ignition supplies replacement electrical components for automotive service applications. RY1974 is cataloged for the listed Subaru BRZ and Toyota 86 fitments and is identified by OE-style interchange references for application matching.

BrandStandard Ignition
Part NumberRY1974
Connector GenderFemale
Connector Quantity1
Connector ShapeSquare
ContentsRelay
FunctionsRelay
Hardware IncludedBracket
Mounting Bracket(s) IncludedYes
Mounting Hole Quantity1
Mounting TypeBolt mount
Spring IncludedNo
Terminal GenderMale
Terminal Quantity8
Terminal TypePin
Voltage12

This part fits 8 vehicles. Search below:

YearMakeModelPositionNotes
2020SubaruBRZN/A
2020Toyota86N/A
2019SubaruBRZN/A
2019Toyota86N/A
2018SubaruBRZN/A
2018Toyota86N/A
2017SubaruBRZN/A
2017Toyota86N/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:

AR7477R7477RY1974SU00302631

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.