Standard Ignition RY-209 HVAC Relay
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Standard Ignition

Standard Ignition RY-209 HVAC Relay

Brand Standard Ignition RY-209
Amperage Rating 20 A
Connector Gender Female
Connector Shape Rectangular
Continuous Duty No
Functions Relay
Mounting Bracket(s) Included No
Terminal Gender Male
Terminal Type Blade
Voltage 12
Fits Acura and Honda · 180 vehicles

Air condition control relay. Manages HVAC system switching with a 12-volt, 20-amp design.

Rectangular connector. Single female connector with four male blade terminals.

Relay only. Contents include the relay for a straightforward replacement.

Cross-references Standard Ignition RY-209, 39794SE0003 and 39794SE0004 for the same application. See all 6.

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Standard Ignition RY-209 HVAC Relay

The Standard Ignition RY-209 is a 12-volt HVAC relay built for air condition control circuits in a wide range of Honda and Acura applications. It uses a rectangular female connector with four male blade terminals and a 20 amp amperage rating for direct replacement service.

  • Part number: RY-209
  • Function: air condition control relay
  • Voltage: 12V
  • Amperage rating: 20 A
  • Connector: 1 female rectangular connector
  • Terminals: 4 male blade terminals
  • Contents: relay
  • Mounting bracket included: No
  • Continuous duty: No

Vehicle Fitment

Compatible with a broad range of Acura and Honda HVAC relay applications, including Acura NSX, RL, RSX, CL, TL, Integra, and Legend, plus Honda CR-V, Civic, Accord, Prelude, CRX, and Civic del Sol. Fits 2003 Honda CR-V, N/A; Fits 2002-2003 Acura RSX, N/A; Fits 1999-2004 Acura RL, N/A; Fits 1998-2002 Honda CR-V, N/A; Fits 1997-2005 Acura NSX, N/A; Fits 1996-2004 Acura RL, N/A; Fits 1996-1998 Acura TL, N/A; Fits 1996-1997 Honda Accord, N/A; Fits 1996-1997 Honda Civic, N/A; Fits 1996-1997 Honda Prelude, N/A; Fits 1995-1998 Acura TL, N/A; Fits 1995-1996 Acura TL, N/A; Fits 1994-1997 Honda Accord, N/A; Fits 1993-2005 Acura NSX, N/A; Fits 1993-1997 Honda Civic del Sol, N/A; Fits 1993-1995 Honda Prelude, N/A; Fits 1992-2001 Honda Prelude, N/A; Fits 1991-1996 Acura NSX, N/A; Fits 1991-1995 Acura Legend, N/A; Fits 1991-1995 Honda Civic, N/A; Fits 1990-1998 Acura Integra, N/A; Fits 1988-1999 Honda Accord, N/A; Fits 1988-1990 Honda Civic, N/A; Fits 1988-1990 Honda CRX, N/A; Fits 1985-1990 Honda Prelude, N/A; Fits 1986-1990 Acura Legend, N/A; Fits 1986-1989 Honda Accord, N/A; Fits 1986-1987 Honda Prelude, N/A; Fits 1991 Honda Accord, N/A; Fits 1991 Honda CRX, N/A; Fits 1991 Honda Prelude, N/A; Fits 1992 Honda Prelude, N/A; Fits 1997 Honda CR-V, N/A; Fits 1997 Honda NSX, N/A; Fits 1998 Honda Prelude, N/A; Fits 1999 Honda Prelude, N/A; Fits 2000 Honda Prelude, N/A; Fits 2001 Honda Civic, N/A; Fits 2001 Honda Prelude, N/A.

What This Relay Helps Address

  • Air conditioning compressor control issues
  • Intermittent HVAC relay operation
  • No-command power delivery to the A/C control circuit
  • Relay failure from worn internal contacts
  • Electrical mismatch when replacing a 4-blade OEM-style relay

Installation Notes and Tips

Verify the connector shape, terminal count, and OE reference before installation. This relay uses a female rectangular connector with four male blade terminals, so matching the original layout is important on Honda Accord, Civic, Prelude, and Acura NSX applications. Confirm the vehicle’s original relay style and note that some listings reference Mitsuba or Denso OE numbers; the part number RY-209 is the key identifier for replacement selection.

Quality Assurance

Standard Ignition supplies this HVAC relay as a direct electrical replacement component for service work on import vehicles. This part cross-references 39794SE0003 and 39794SE0004 for the same application.

This part fits 180 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelBody TypePositionNotes
2005AcuraNSX—N/AMitsuba
2005AcuraNSX—N/A—
2004AcuraNSX—N/AMitsuba
2004AcuraNSX—N/A—
2004AcuraRL—N/AHigh Beam - Compatible with various models and years, please verify the connector type and fitment before purchasing.
2004AcuraRL—N/A—
2003AcuraNSX—N/AMitsuba
2003AcuraNSX—N/A—
2003AcuraRL—N/AHigh Beam - Compatible with various models and years, please verify the connector type and fitment before purchasing.
2003AcuraRL—N/A—
2003AcuraRSX—N/AOE No. 39794-SL0-004; Mitsuba
2003HondaCR-V—N/AOE No. 39794-SE0-004; Denso; 4 Blade Term.
2002AcuraNSX—N/AMitsuba
2002AcuraNSX—N/A—
2002AcuraRL—N/AHigh Beam - Compatible with various models and years, please verify the connector type and fitment before purchasing.
2002AcuraRL—N/A—
2002AcuraRSX—N/AOE No. 39794-SL0-004; Mitsuba
2002HondaCR-V—N/A—
2001AcuraCL—N/AMitsuba
2001AcuraNSX—N/AOE No. 39794-SL0-004; Mitsuba
2001AcuraNSX—N/AMitsuba
2001AcuraNSX—N/A—
2001AcuraRL—N/AHigh Beam - Compatible with various models and years, please verify the connector type and fitment before purchasing.
2001AcuraRL—N/A—
2001AcuraTL—N/AOE No. 39794-SL0-004; Denso; 4 Blade Term.
2001HondaCivic—N/AOE No. 39794-SL0-004; Mitsuba
2001HondaCR-V—N/A—
2001HondaPrelude—N/AOE No. 39794-SL0-004; Mitsuba
2001HondaPrelude—N/A—
2000AcuraNSX—N/AOE No. 39794-SL0-004; Mitsuba
2000AcuraNSX—N/AMitsuba
2000AcuraNSX—N/A—
2000AcuraRL—N/AHigh Beam - Compatible with various models and years, please verify the connector type and fitment before purchasing.
2000AcuraRL—N/A—
2000AcuraTL—N/AOE No. 39794-SL0-004; Denso; 4 Blade Term.
2000HondaCR-V—N/A—
2000HondaPrelude—N/AOE No. 39794-SL0-J01; OE No. 39794-SL0-004; 4 Blade Term.
2000HondaPrelude—N/A—
1999AcuraCL—N/A—
1999AcuraCL—N/AMitsuba
1999AcuraNSX—N/AOE No. 39794-SL0-004; Mitsuba
1999AcuraNSX—N/AMitsuba
1999AcuraNSX—N/A—
1999AcuraRL—N/AHigh Beam - Compatible with various models and years, please verify the connector type and fitment before purchasing.
1999AcuraRL—N/A—
1999AcuraTL—N/AOE No. 39794-SL0-004; Denso; 4 Blade Term.
1999HondaCivic—N/AOE No. 39794-SL0-004; Mitsuba
1999HondaCR-V—N/A—
1999HondaPrelude—N/AOE No. 39794-SL0-004; Mitsuba; 4 Blade Term.
1999HondaPrelude—N/A—
1998AcuraCL—N/AMitsuba
1998AcuraCL—N/A—
1998AcuraIntegra—N/AOE No. 39794-SE0-004
1998AcuraNSX—N/AOE No. 39794-SL0-004; Mitsuba
1998AcuraNSX—N/AMitsuba
1998AcuraNSX—N/A—
1998AcuraRL—N/A—
1998AcuraTL—N/AOE No. 39794-SL0-J01; Mitsuba; 4 Blade Term.
1998AcuraTL—N/AOE No. 39797-SE0-004
1998HondaCivic—N/AOE No. 39794-SL0-004; Mitsuba
1998HondaCR-V—N/A—
1998HondaPrelude—N/AOE No. 056700-7410; OE No. 39794-SL0-004; Mitsuba; 4 Blade Term.
1998HondaPrelude—N/A—
1997AcuraCL—N/A—
1997AcuraCL—N/AMitsuba
1997AcuraIntegra—N/AOE No. 39794-SE0-004
1997AcuraNSX—N/Aw/ Skirt; OE No. 39794-SL0-004
1997AcuraNSX—N/AMitsuba
1997AcuraNSX—N/A—
1997AcuraRL—N/A—
1997AcuraTL—N/AOE No. 39794-SL0-J01; Mitsuba; 4 Blade Term.
1997AcuraTL—N/AOE No. 39797-SE0-004
1997HondaAccord—N/AOE No. 39794-SL0-004; Mitsuba; 4 Blade Term.
1997HondaAccord—N/A—
1997HondaCivic—N/AOE No. 39794-SL0-004
1997HondaCivic del Sol—N/AOE No. 39794-SL0-004
1997HondaCR-V—N/AOE No. 39794-SL0-004
1997HondaPrelude—N/AOE No. 39794-SL0-004; Mitsuba; 4 Blade Term.
1997HondaPrelude—N/A—
1996AcuraIntegra—N/AOE No. 39794-SE0-004
1996AcuraNSX—N/AOE No. 39794-SL0-004; Mitsuba; Black Finish; 4 Blade Term.
1996AcuraNSX—N/AMitsuba
1996AcuraRL—N/A—
1996AcuraTL—N/AOE No. 39794-SL0-J01; Mitsuba; 4 Blade Term.
1996AcuraTL—N/AOE No. 39797-SE0-004
1996AcuraTL—N/A—
1996HondaAccord—N/A—
1996HondaAccord—N/AOE No. 39794-SL0-004; Mitsuba; 4 Blade Term.
1996HondaCivic—N/AOE No. 39794-SL0-004
1996HondaCivic del Sol—N/AOE No. 39794-SL0-004
1996HondaPrelude—N/AOE No. 39794-SL0-004; Mitsuba; 4 Blade Term.
1996HondaPrelude—N/A—
1995AcuraIntegra—N/AOE No. 39794-SE0-004
1995AcuraLegend—N/A—
1995AcuraNSX—N/AOE No. 39794-SL0-004; Mitsuba; Black Finish; 4 Blade Term.
1995AcuraNSX—N/AMitsuba
1995AcuraTL—N/AOE No. 39797-SE0-004
1995AcuraTL—N/A—
1995HondaAccord—N/A—
1995HondaAccord—N/AOE No. 39794-SL0-004
1995HondaCivic—N/AOE No. 39794-SE0-004
1995HondaCivic del Sol—N/AOE No. 39794-SL0-004
1995HondaPrelude—N/AOE No. 39794-SL0-004
1995HondaPrelude—N/A—
1994AcuraIntegraHatchbackN/AOE No. 39794-SE0-004
1994AcuraIntegraSedanN/AOE No. 39794-SE0-004
1994AcuraLegend—N/A—
1994AcuraNSX—N/AOE No. 39794-SL0-004; Mitsuba; Black Finish; 4 Blade Term.
1994AcuraNSX—N/AMitsuba
1994HondaAccord—N/A—
1994HondaAccord—N/AOE No. 39794-SL0-004
1994HondaCivic—N/AOE No. 39794-SE0-004
1994HondaCivic del Sol—N/AOE No. 39794-SL0-004
1994HondaPrelude—N/AOE No. 39794-SL0-004
1994HondaPrelude—N/A—
1993AcuraIntegra—N/AMitsuba
1993AcuraIntegra—N/AOE No. 39794-SE0-004
1993AcuraLegend—N/A—
1993AcuraNSX—N/AOE No. 39794-SL0-004; Mitsuba; Black Finish; 4 Blade Term.
1993AcuraNSX—N/AMitsuba
1993HondaAccord—N/AOE No. 39794-SE0-004; 4 Blade Term.
1993HondaCivic—N/AOE No. 39794-SE0-004
1993HondaCivic del Sol—N/AOE No. 39794-SL0-004
1993HondaPrelude—N/AOE No. 39794-SL0-004
1993HondaPrelude—N/A—
1992AcuraIntegra—N/AOE No. 39794-SE0-004
1992AcuraIntegra—N/AMitsuba
1992AcuraLegend—N/A—
1992AcuraNSX—N/AOE No. 39794-SL0-004; Mitsuba; Black Finish; 4 Blade Term.
1992HondaAccord—N/AOE No. 39794-SE0-004; 4 Blade Term.
1992HondaCivic—N/AOE No. 39794-SE0-004
1992HondaPrelude—N/AMitsuba
1992HondaPrelude—N/AOE No. 39794-SE0-004
1992HondaPrelude—N/A—
1991AcuraIntegra—N/AMitsuba
1991AcuraIntegra—N/AOE No. 39794-SE0-004
1991AcuraLegend—N/A—
1991AcuraNSX—N/AOE No. 39794-SL0-004; Mitsuba; Black Finish; 4 Blade Term.
1991AcuraNSX—N/AMitsuba
1991HondaAccord—N/AOE No. 39794-SE0-004
1991HondaCivic—N/AOE No. 39794-SE0-004
1991HondaCRX—N/AOE No. 39794-SE0-004
1991HondaPrelude—N/AOE No. 39794-SE0-004; 4 Term.
1990AcuraIntegra—N/AMitsuba
1990AcuraIntegra—N/AOE No. 39794-SE0-004
1990AcuraLegend—N/AOE No. 39794-SE0-004; 4 Blade Term.
1990AcuraLegend—N/AFitment Note: Without Bracket
1990HondaAccord—N/AOE No. 39794-SE0-004; 4 Blade Term.
1990HondaCivic—N/AOE No. 39794-SE0-004; 4 Blade Term.
1990HondaCRX—N/AOE No. 39794-SE0-004; 4 Blade Term.
1990HondaPrelude—N/AOE No. 39794-SE0-004; 4 Blade Term.
1989AcuraLegend—N/AOE No. 39794-SE0-004; 4 Blade Term.
1989AcuraLegend—N/AFitment Note: Without Bracket
1989HondaAccord—N/A—
1989HondaAccord—N/AOE No. 39794-SE0-004; 4 Blade Term.
1989HondaAccord—N/ASquare; 4 Term.
1989HondaCivic—N/AOE No. 39794-SE0-004; 4 Blade Term.
1989HondaCRX—N/AOE No. 39794-SE0-004; 4 Blade Term.
1989HondaPrelude—N/AOE No. 39794-SE0-004; 4 Blade Term.
1988AcuraLegend—N/AOE No. 39794-SE0-004; 4 Blade Term.
1988AcuraLegend—N/AFitment Note: Without Bracket
1988HondaAccord—N/AOE No. 39794-SE0-004; 4 Blade Term.
1988HondaAccord—N/ASquare; 4 Term.
1988HondaAccord—N/A—
1988HondaCivic—N/AOE No. 39794-SE0-004; 4 Blade Term.
1988HondaCRX—N/AOE No. 39794-SE0-004; 4 Blade Term.
1988HondaPrelude—N/AOE No. 39794-SE0-004; 4 Blade Term.
1987AcuraLegend—N/AOE No. 39794-SE0-004; 4 Blade Term.
1987AcuraLegend—N/AFitment Note: Without Bracket
1987HondaAccord—N/AOE No. 39794-SE0-004; 4 Term.
1987HondaAccord—N/ASquare; 4 Term.
1987HondaPrelude—N/AOE No. 39794-SE0-004; 4 Blade Term.
1987HondaPrelude—N/AFitment Note: Without Bracket
1986AcuraLegend—N/AOE No. 39794-SE0-004; 4 Blade Term.
1986AcuraLegend—N/AFitment Note: Without Bracket
1986HondaAccord—N/AOE No. 39794-SE0-004; 4 Term.
1986HondaAccord—N/ASquare; 4 Term.
1986HondaPrelude—N/AOE No. 39794-SE0-004; 4 Blade Term.
1986HondaPrelude—N/AFitment Note: Without Bracket
1985HondaPrelude—N/AOE No. 39794-SE0-004; 4 Blade Term.
Directly replaces or cross-references 6 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Standard Ignition — RY-20939794SE000339794SE0004AR356R3055RC2203