Standard Ignition RY-721 Rear Window Defroster Relay

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Standard IgnitionPart #: RY-721

Standard Ignition RY-721 Rear Window Defroster Relay

Name: Standard Ignition RY-721 Rear Window Defroster Relay
Brand: Standard Ignition
SKU: FBHK-RY-721
Price: 16.12 USD
Availability: InStock

240 vehicles fit this part

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OE Direct Replacement — Bolt-on fit, no modifications needed

Fitment: Honda and Acura, CR-V, HR-V, Pilot, Accord, Civic, MDX, TLX, Odyssey, Ridgeline, TSX, ZDX, Crosstour, Fit, RDX, RL, and TL

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Not what you need? See all Rear Window Defroster Relay options

Window Defroster Relay for Honda and Acura

Standard Ignition RY-721 is a 12 V window defroster relay with a rectangular connector, male blade terminals, and a 4-terminal layout. It is built for direct relay replacement in a wide range of Honda, Acura, and Subaru applications where the rear defroster circuit needs reliable switching.

Key Features

12 V relay for window defroster circuit control
Rectangular connector shape for OE-style fitment
Male blade terminals with 4-terminal configuration
Relay-only contents for service replacement
Standard Ignition RY-721 part number for catalog matching

Detailed Description

This Standard Ignition RY-721 window defroster relay is used to switch power in the rear defogger circuit, helping restore proper electrical operation when the original relay has worn contacts or intermittent function. It cross-references Rostra Powertrain Controls 60-0071 for the same application. The RY-721 is listed across many Honda Civic, Honda CR-V, Honda Accord, Honda Odyssey, Honda Pilot, Acura RDX, and Acura MDX applications, along with select Subaru models, making it a practical replacement for vehicles that rely on a 12 V relay with a rectangular connector and blade-style terminals.

What It Helps Fix

Rear window defroster that does not activate
Intermittent defroster operation
Relay clicking without consistent circuit engagement
Electrical switching issues in the defroster circuit
Loss of rear glass defogging performance during cold or wet weather

Installation Notes and Tips

Verify the connector shape, terminal count, and terminal type before installation. This relay uses male blade terminals and does not include a mounting bracket. Confirm the vehicle’s relay location and compare the original part number or connector layout before replacement. Fits 2006-2011 Honda Civic, N/A; Fits 2007-2024 Honda CR-V, N/A; Fits 2003-2022 Honda Accord, N/A; Fits 2019-2024 Acura RDX, N/A; Fits 2007-2017 Acura MDX, N/A.

Quality Assurance

Standard Ignition replacement electrical components are cataloged for OE-style service use and application matching. Part number RY-721 is supported by published interchange data for cross-reference verification during ordering and diagnosis.

Brand	Standard Ignition
Part Number	RY-721
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 240 vehicles. Search below:

Year	Make	Model	# Doors	Transmission	Liters	Cylinders	Position	Notes
2024	Acura	Integra					N/A
2024	Acura	RDX					N/A
2024	Honda	Civic					N/A
2024	Honda	CR-V					N/A
2023	Acura	Integra					N/A
2023	Acura	RDX					N/A
2023	Honda	Civic					N/A
2023	Honda	CR-V					N/A
2023	Honda	Ridgeline					N/A
2022	Acura	RDX					N/A
2022	Honda	Accord					N/A
2022	Honda	Civic					N/A
2022	Honda	CR-V					N/A
2022	Honda	Insight					N/A
2022	Honda	Odyssey					N/A
2022	Honda	Ridgeline					N/A
2021	Acura	RDX					N/A
2021	Honda	Accord					N/A
2021	Honda	Civic					N/A
2021	Honda	Clarity					N/A
2021	Honda	CR-V					N/A
2021	Honda	HR-V					N/A
2021	Honda	Insight					N/A
2021	Honda	Odyssey					N/A
2021	Honda	Passport					N/A
2021	Honda	Pilot					N/A
2021	Honda	Ridgeline					N/A
2020	Acura	RDX					N/A
2020	Acura	TLX					N/A
2020	Honda	Accord					N/A
2020	Honda	Civic					N/A
2020	Honda	Clarity					N/A
2020	Honda	CR-V					N/A
2020	Honda	HR-V					N/A
2020	Honda	Insight					N/A
2020	Honda	Odyssey					N/A
2020	Honda	Passport					N/A
2020	Honda	Pilot					N/A
2020	Honda	Ridgeline					N/A
2019	Acura	RDX					N/A
2019	Acura	TLX					N/A
2019	Honda	Accord					N/A
2019	Honda	Civic					N/A
2019	Honda	Clarity					N/A
2019	Honda	CR-V					N/A
2019	Honda	HR-V					N/A
2019	Honda	Insight					N/A
2019	Honda	Odyssey					N/A
2019	Honda	Passport					N/A
2019	Honda	Pilot					N/A
2019	Honda	Ridgeline					N/A
2018	Acura	TLX					N/A
2018	Honda	Accord					N/A
2018	Honda	Civic					N/A
2018	Honda	Clarity					N/A
2018	Honda	CR-V					N/A
2018	Honda	HR-V					N/A
2018	Honda	Odyssey					N/A
2018	Honda	Pilot					N/A
2018	Honda	Ridgeline					N/A
2018	Subaru	Outback					N/A	In Fuse Panel
2017	Acura	MDX			3.0L	V6	N/A
2017	Acura	NSX			3.5L	V6	N/A
2017	Acura	RLX			3.5L	V6	N/A
2017	Acura	TLX			2.4L	L4	N/A
2017	Honda	Accord	2 Door				N/A
2017	Honda	Civic					N/A
2017	Honda	Clarity					N/A
2017	Honda	CR-V					N/A
2017	Honda	HR-V					N/A
2017	Honda	Odyssey			3.5L	V6	N/A
2017	Honda	Pilot					N/A
2017	Honda	Ridgeline			3.5L	V6	N/A
2017	Subaru	Outback					N/A	In Fuse Panel
2016	Acura	MDX			3.5L	V6	N/A
2016	Acura	RLX			3.5L	V6	N/A
2016	Acura	TLX			2.4L	L4	N/A
2016	Honda	Accord	2 Door				N/A
2016	Honda	Civic					N/A
2016	Honda	CR-V					N/A
2016	Honda	CR-Z					N/A
2016	Honda	HR-V					N/A
2016	Honda	Odyssey			3.5L	V6	N/A
2016	Honda	Pilot					N/A
2016	Subaru	Legacy					N/A
2016	Subaru	Outback					N/A	In Fuse Panel
2015	Acura	MDX					N/A
2015	Acura	RLX			3.5L	V6	N/A
2015	Acura	TLX					N/A
2015	Honda	Accord	2 Door				N/A
2015	Honda	CR-V					N/A
2015	Honda	CR-Z					N/A
2015	Honda	Crosstour					N/A
2015	Honda	Odyssey					N/A
2015	Honda	Pilot					N/A
2015	Subaru	Legacy					N/A
2015	Subaru	Outback					N/A
2014	Acura	MDX					N/A
2014	Acura	RLX			3.5L	V6	N/A
2014	Acura	TL			3.5L	V6	N/A
2014	Honda	Accord	2 Door				N/A
2014	Honda	CR-V					N/A
2014	Honda	CR-Z					N/A
2014	Honda	Crosstour					N/A
2014	Honda	Odyssey					N/A
2014	Honda	Pilot					N/A
2014	Honda	Ridgeline					N/A
2014	Subaru	Legacy					N/A
2014	Subaru	Outback					N/A
2013	Acura	MDX					N/A
2013	Acura	TL			3.5L	V6	N/A
2013	Acura	TSX					N/A
2013	Acura	ZDX					N/A
2013	Honda	Accord					N/A
2013	Honda	CR-V					N/A
2013	Honda	CR-Z					N/A
2013	Honda	Crosstour					N/A
2013	Honda	Fit					N/A
2013	Honda	Odyssey					N/A
2013	Honda	Pilot					N/A
2013	Honda	Ridgeline					N/A
2013	Subaru	Legacy					N/A
2013	Subaru	Outback					N/A
2012	Acura	MDX					N/A
2012	Acura	RDX			2.3L	L4	N/A
2012	Acura	RL			3.7L	V6	N/A
2012	Acura	TL			3.5L	V6	N/A
2012	Acura	TSX					N/A
2012	Acura	ZDX					N/A
2012	Honda	Accord					N/A
2012	Honda	CR-V					N/A
2012	Honda	CR-Z					N/A
2012	Honda	Crosstour					N/A
2012	Honda	Odyssey					N/A
2012	Honda	Pilot					N/A
2012	Honda	Ridgeline					N/A
2012	Subaru	Legacy					N/A
2012	Subaru	Outback					N/A
2012	Subaru	Tribeca					N/A
2011	Acura	MDX					N/A
2011	Acura	RDX			2.3L	L4	N/A
2011	Acura	RL			3.7L	V6	N/A
2011	Acura	TL			3.5L	V6	N/A
2011	Acura	TSX					N/A
2011	Acura	ZDX					N/A
2011	Honda	Accord					N/A
2011	Honda	Accord Crosstour					N/A
2011	Honda	Civic					N/A
2011	Honda	CR-V					N/A
2011	Honda	CR-Z					N/A
2011	Honda	Odyssey					N/A
2011	Honda	Pilot					N/A
2011	Honda	Ridgeline					N/A
2011	Subaru	Legacy					N/A
2011	Subaru	Outback					N/A
2010	Acura	MDX					N/A
2010	Acura	RDX					N/A
2010	Acura	RL					N/A
2010	Acura	TSX					N/A
2010	Acura	ZDX					N/A
2010	Honda	Accord					N/A
2010	Honda	Accord Crosstour					N/A
2010	Honda	Civic					N/A
2010	Honda	CR-V					N/A
2010	Honda	Odyssey					N/A
2010	Honda	Pilot					N/A
2010	Honda	Ridgeline					N/A
2010	Subaru	Legacy					N/A
2010	Subaru	Outback					N/A
2009	Acura	MDX					N/A
2009	Acura	RDX					N/A
2009	Acura	RL					N/A
2009	Acura	TSX					N/A
2009	Honda	Accord					N/A
2009	Honda	Civic					N/A
2009	Honda	CR-V					N/A
2009	Honda	Odyssey					N/A
2009	Honda	Pilot					N/A
2009	Honda	Ridgeline					N/A
2009	Subaru	Forester			2.5L	H4	N/A
2009	Subaru	Impreza			2.5L	H4	N/A
2009	Subaru	Legacy			2.5L	H4	N/A
2009	Subaru	Outback			2.5L	H4	N/A
2008	Acura	MDX					N/A
2008	Acura	RDX			2.3L	L4	N/A
2008	Acura	RL			3.5L	V6	N/A
2008	Acura	TSX					N/A
2008	Honda	Accord					N/A
2008	Honda	Civic					N/A
2008	Honda	CR-V					N/A
2008	Honda	Odyssey					N/A
2008	Honda	Ridgeline					N/A
2008	Subaru	Legacy					N/A
2008	Subaru	Outback			2.5L	H4	N/A
2007	Acura	MDX					N/A
2007	Acura	RDX					N/A
2007	Acura	RL					N/A
2007	Acura	TL					N/A
2007	Acura	TSX					N/A
2007	Honda	Accord					N/A
2007	Honda	Civic					N/A
2007	Honda	CR-V					N/A
2007	Honda	Odyssey					N/A
2007	Honda	Ridgeline					N/A
2007	Subaru	Legacy			2.5L	H4	N/A
2007	Subaru	Outback					N/A
2006	Acura	RL					N/A
2006	Acura	TL					N/A
2006	Acura	TSX					N/A
2006	Honda	Accord					N/A
2006	Honda	Civic					N/A
2006	Honda	Odyssey					N/A
2006	Honda	Ridgeline					N/A
2006	Subaru	Baja					N/A
2006	Subaru	Legacy			2.5L	H4	N/A
2006	Subaru	Outback					N/A
2005	Acura	RL					N/A
2005	Acura	TL					N/A
2005	Acura	TSX					N/A
2005	Honda	Accord					N/A
2005	Honda	Odyssey					N/A
2005	Subaru	Baja					N/A
2005	Subaru	Legacy			2.5L	H4	N/A
2005	Subaru	Outback			2.5L	H4	N/A
2004	Acura	TL					N/A
2004	Acura	TSX					N/A
2004	Honda	Accord					N/A
2004	Subaru	Baja					N/A
2004	Subaru	Legacy		Automatic			N/A
2004	Subaru	Outback		Automatic			N/A
2003	Honda	Accord					N/A
2003	Subaru	Baja					N/A
2003	Subaru	Legacy		Automatic			N/A
2003	Subaru	Outback		Automatic			N/A
2002	Subaru	Legacy		Automatic			N/A
2002	Subaru	Outback		Automatic			N/A
2001	Subaru	Legacy		Automatic			N/A
2001	Subaru	Outback		Automatic			N/A
2000	Subaru	Legacy		Automatic			N/A
2000	Subaru	Outback		Automatic			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:

1R19122056925-038239792SDAA0156-2218AR6226R6226RAA1756

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