When your car’s air conditioning starts blowing warm air on a hot day, a faulty AC clutch relay is often the culprit. This small but critical component controls the power to the compressor clutch, and when it fails, your AC system simply won’t engage. Replacing it is a quick and affordable fix that can save you from a costly trip to the mechanic.
In this guide, we review eight top-rated AC clutch relays, covering compatibility, build quality, and value. Whether you drive a Honda, Toyota, or Lexus, you’ll find the right relay to get your AC blowing cold again.
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HHZL AC Relay G8HL-H71 for Honda 4 Pins AC Compressor Starter Relay for Blo…
Best forHonda owners needing a spare
- 2-pack value
- Precise switching
ConsiderLimited to Honda models
HHZL AC Relay G8HL-H71 for Honda 4 Pins AC Compressor Starter Relay for Blo…
Best forMulti-car households or bulk use
- Four relays included
- Consistent performance
ConsiderMay be more than needed
90987-02028 156700-3290 A/C Clutch Relay 12V DC 30A 4-Pin SPST-NO (2-Pack)
Best forToyota and Lexus drivers
- 2-pack value
- Exact spec match
ConsiderVerify fitment before buying
WVE by NTK 1R1066 A/C Clutch Relay, 1 Pack
Best forUniversal import and domestic use
- OE spec compliance
- Broad vehicle coverage
ConsiderSingle pack only
2 Pack AC Relay 39794-SDA-A05 OEM 4 Prong Power Relay Assembly Honda Starte…
Best forDIY Honda and Acura repairs
- 2-pack value
- Wide compatibility
ConsiderLimited to Honda/Acura
Rainco G8HL-H71 AC Relay 39794-SDA-A03 39794-SDA-A05 4 Prong Power Relay As…
Best forMultiple electrical system uses
- Multi-purpose relay
- OEM standard quality
ConsiderNo spare included
DENSO AC Clutch Relay compatible with Toyota Highlander 2008-2012
Best forToyota Highlander 2008-2012 owners
- Genuine DENSO quality
- Direct fit
ConsiderLimited to specific years
90987-02028 AC Relay – 12V Replacement A/C Compressor Cooling Fan Relay Com…
Best forBroad Toyota and Lexus fitment
- Wide vehicle compatibility
- Durable construction
ConsiderNo spare included
HHZL AC Relay G8HL-H71 – Compact 2-Pack for Honda
The HHZL AC Relay G8HL-H71 comes in a convenient 2-pack, giving you a spare for future needs. It precisely replaces OEM numbers G8HL-H71, 39794-SDA-A03, 39794-SDA-A05, and 1R191, ensuring a perfect fit for your Honda. Its compact size of 0.87 by 0.57 by 1.07 inches means it won’t crowd your fuse box.
Built with silver alloy contacts and all-copper electromagnetic coils, this relay delivers millisecond-level switching response for reliable circuit control. The sturdy, waterproof plastic shell resists impacts and moisture, making it durable under the hood. If you need a dependable replacement for your Accord, Civic, Element, CR-V, or CR-Z, this relay offers solid performance at a budget-friendly price.
- 2-pack value
- Precise switching
- Waterproof shell
- Limited to Honda models
- Check fitment first
HHZL AC Relay G8HL-H71 – 4-Pack for Multiple Vehicles
If you maintain multiple Honda vehicles or want to keep extras on hand, the HHZL AC Relay 4-pack is a smart investment. It matches the same OEM numbers as the 2-pack, including G8HL-H71 and 39794-SDA-A03, so you get the same precise fit and function. The relay’s compact design ensures easy installation in tight spaces.
Each relay features silver alloy contacts and all-copper coils for efficient current management and rapid switching. The durable, waterproof housing protects against engine bay elements, ensuring longevity. With four relays in the box, you can replace relays in different cars or keep backups for years. This pack is ideal for DIY enthusiasts who value preparedness.
- Four relays included
- Consistent performance
- Durable construction
- May be more than needed
- Honda-specific fitment
Sonzrod A/C Clutch Relay – 2-Pack for Toyota and Lexus
The Sonzrod A/C Clutch Relay is designed to match the specs of OEM part numbers 90987-02028 and 156700-3290. It operates on 12V DC with a 30A rating and features a 4-pin SPST-NO layout with plug-in blade terminals, ensuring a secure connection. This relay is compatible with select Toyota models like 4Runner, Tacoma, Camry, Corolla, RAV4, Highlander, Tundra, Sienna, and also Lexus ES, GX, RX, and Scion tC.
Included in the package are two relays, so you can install one and keep the other as a spare for future troubleshooting. The plug-and-play design makes installation straightforward for DIYers. Before ordering, verify your vehicle’s relay specifications to ensure compatibility. This set offers practical value for Toyota and Lexus owners.
- 2-pack value
- Exact spec match
- Easy plug-in install
- Verify fitment before buying
- No brand recognition
WVE by NTK 1R1066 A/C Clutch Relay – OE Quality
Brand: WELLS VEHICLE ELECTRONICS
A trustworthy universal relay for various vehicles.
The WVE by NTK 1R1066 A/C Clutch Relay is a single-pack relay that meets or exceeds OE specifications in form, fit, and function. It is designed to handle high-amperage current controlled by a low-current switch, ensuring reliable operation. This relay is suitable for both import and domestic applications, offering broad coverage.
When a faulty relay is not replaced, the circuit can become non-functional or remain engaged, causing AC issues. This relay prevents that by delivering consistent performance. The build quality is robust, reflecting NTK’s reputation for reliability. If you need a straightforward replacement without extra frills, this relay is a solid option.
- OE spec compliance
- Broad vehicle coverage
- Reliable brand
- Single pack only
- No specific vehicle list
Rainco AC Relay 39794-SDA-A05 – 2-Pack for Honda and Acura
The Rainco AC Relay 2-pack is designed to replace OEM part number 39794-SDA-A05, along with RY1224 and G8HL-H71. It fits a wide range of Honda and Acura models, including Accord 2003-2014, Civic 2006-2014, CR-V 2007-2014, Odyssey 2005-2014, and Acura ILX 2013-2014. The relay is made from high-quality materials that meet or exceed OEM standards.
This economical option allows you to replace the AC compressor relay yourself, saving on repair shop costs. The plug-and-play design simplifies installation, making it perfect for DIYers. With two relays in the pack, you have a spare for future needs. The wide compatibility makes it a versatile choice for Honda and Acura owners.
- 2-pack value
- Wide compatibility
- DIY-friendly
- Limited to Honda/Acura
- No waterproof rating
Rainco G8HL-H71 AC Relay – Multi-Purpose for Honda
The Rainco G8HL-H71 AC Relay is a premium quality relay that replaces OEM numbers 39794-SDA-A03, 39794-SDA-A05, RY1224, and G8HL-H71. It is commonly used for accessory power, radiator fan, blower motor, cargo light, A/C compressor, and A/C condenser fan motor relays. This versatility makes it a handy component for various electrical systems.
It fits Honda Accord 2003-2014, Civic 2006-2014, CR-V 2007-2014, Odyssey 2005-2014, and Acura ILX 2013-2014. The relay is built to meet or exceed OEM standards, ensuring durability and reliable performance. Whether you’re fixing your AC or other electrical components, this relay offers flexibility. Its multi-purpose nature adds value for any Honda owner.
- Multi-purpose relay
- OEM standard quality
- Wide Honda fitment
- No spare included
- Check compatibility
DENSO AC Clutch Relay – Genuine for Toyota Highlander
The Sixity Auto DENSO AC Clutch Relay is a genuine DENSO part, specifically compatible with Toyota Highlander models from 2008 to 2012. It comes with original packaging and hardware, ensuring a direct replacement fit. As a genuine DENSO product, you can trust its quality and performance.
This relay is designed to meet the exact specifications of your Highlander, providing reliable AC clutch engagement. The direct replacement design means no modifications are needed; simply swap out the old relay. If you own a Highlander from these years, this relay offers peace of mind with its authentic construction. It’s a straightforward choice for maintaining your vehicle’s AC system.
- Genuine DENSO quality
- Direct fit
- Includes hardware
- Limited to specific years
- Single relay only
Rainco 90987-02028 AC Relay – Wide Toyota Compatibility
The Rainco 90987-02028 AC Relay is designed to match or exceed OEM specifications for Toyota, Lexus, and Scion models. It is compatible with Camry, Corolla, Tacoma, RAV4, Tundra, 4Runner, FJ Cruiser, and more from 1997 to 2014. This wide coverage makes it a versatile replacement for many vehicles.
Built with premium materials and high-temperature resistance, it operates reliably under harsh engine bay conditions. The plug-and-play design ensures a direct fit with no modifications needed, perfect for DIYers. Whether you’re replacing a faulty AC compressor relay or cooling fan relay, this relay delivers stable performance. It’s a dependable choice for Toyota and Lexus owners.
- Wide vehicle compatibility
- Durable construction
- Easy installation
- No spare included
- Verify fitment for your model
Buyer’s Guide: What to Consider
Selecting the right AC clutch relay involves more than just picking a part. Consider compatibility, electrical specs, and build quality to ensure reliable performance and longevity. Here are key factors to guide your decision.
- Compatibility: Check the OEM part number and vehicle model list. Relays are often specific to certain makes and years. Using the wrong relay can lead to poor performance or damage.
- Electrical Ratings: Ensure the relay matches your vehicle's voltage (usually 12V) and current rating (e.g., 30A). A relay with too low a rating may overheat, while one with too high may not switch correctly.
- Build Quality: Look for relays with durable materials like silver alloy contacts and copper coils. Waterproof or sealed housings offer better protection against moisture and engine bay heat.
- Pack Size: Consider whether you need a single relay or a multi-pack. Multi-packs provide spares for future failures or for multiple vehicles, often at a better value.
- Brand Reputation: Choose relays from reputable brands or those that meet OEM specifications. Genuine parts like DENSO offer guaranteed quality, while aftermarket options can be cost-effective if they meet standards.
Conclusion
Choosing the right AC clutch relay is essential for a properly functioning air conditioning system. Whether you need a budget-friendly 2-pack for your Honda or a genuine DENSO part for your Toyota, the options above cover a range of needs and budgets. Always verify compatibility with your vehicle’s make, model, and year before purchasing.
For most drivers, the HHZL 2-pack offers excellent value and reliability, while the Rainco 90987-02028 provides broad Toyota coverage. If you drive a Highlander, the genuine DENSO relay is a top pick. Whichever you choose, replacing a faulty relay is a simple DIY fix that can restore cold air quickly.
Erica Steven is the founder and lead writer of WorstBrands, a site dedicated to providing honest and trustworthy reviews about outdoor gear and fashion products.
With a passion for exploring the great outdoors and staying up to date on the latest fashion trends, Erica uses her expertise to provide valuable insights into the products that matter most to her readers.
Whether you're looking for camping equipment or the latest fashion accessories, Erica's articles are the perfect resource for finding the best products that fit your lifestyle.