Home› HVAC > Relays› Standard Ignition RY-20 A/C Compressor Control Relay
Standard Ignition RY-20 A/C Compressor Control RelayOE Quality 60-Day Returns
Standard Ignition RY-20 A/C Compressor Control Relay - view 1
Standard Ignition RY-20 A/C Compressor Control Relay - view 2
Standard Ignition RY-20 A/C Compressor Control Relay - view 3
Standard Ignition RY-20 A/C Compressor Control Relay - view 4
Standard Ignition RY-20 A/C Compressor Control Relay - view 5
Standard Ignition RY-20 A/C Compressor Control Relay - view 6
Standard Ignition RY-20 A/C Compressor Control Relay - view 7
Standard Ignition RY-20 A/C Compressor Control Relay - view 8
Part #: RY-20

Standard Ignition RY-20 A/C Compressor Control Relay

⚙️ 283 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$22.02Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
✅OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Chevrolet, Oldsmobile, Buick, Pontiac, and GMC, Commercial Chassis, Cutlass Ciera, Cutlass Calais, Electra, LeSabre, Regal, Caprice, 98, Custom Cruiser, Bonneville, Delta 88, Safari, Monte Carlo, El Camino, Caballero, Cutlass, Grand Prix, Tempest, Riviera, Toronado, Parisienne, Impala, Cutlass Supreme, Estate Wagon, Malibu, Grand LeMans, Century, Skylark, Chevette, Cutlass Cruiser, Acadian, Catalina, Firebird, Laurentian, LeMans, Monza, Cutlass Salon, Grand Am, Phoenix, Sunbird, Opel, and Grand Safari
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST
Not what you need? Click here for all A/C Compressor Control Relay options

Reliable A/C Compressor Control Relay for Select GM Vehicles

The Standard Ignition RY-20 A/C Compressor Control Relay is designed to provide dependable operation for your vehicle's HVAC system. Engineered for compatibility with various Buick, Chevrolet, Oldsmobile, and Pontiac models, this relay ensures proper control of the air conditioning compressor.

  • Amperage rating: 15 amps for consistent electrical performance
  • 12-volt relay suitable for standard automotive electrical systems
  • Female rectangular connector with one connector for secure fit
  • Includes mounting bracket(s) for easy installation
  • Five male blade terminals for reliable electrical connections
  • Designed for use as an A/C compressor control relay in HVAC systems
  • Non-continuous duty relay optimized for compressor cycling

Technical Details and Compatibility

The Standard Ignition RY-20 relay features a 15 amp amperage rating and operates on a 12-volt system, making it suitable for controlling the A/C compressor in a range of General Motors vehicles. The relay includes a female rectangular connector with one connector and five male blade terminals, ensuring a secure and stable electrical connection. The included mounting bracket simplifies installation and helps maintain proper positioning within the HVAC system.

This relay is compatible with multiple Buick, Chevrolet, Oldsmobile, and Pontiac models, including but not limited to the Chevrolet Caprice, Impala, Monte Carlo, and El Camino; Buick Century, LeSabre, and Riviera; Oldsmobile Cutlass series and Delta 88; Pontiac Firebird, Grand Prix, and Bonneville. The part number RY-20 is specifically designed to meet the electrical and mechanical requirements of these vehicles' air conditioning systems.

Common Applications and Problem Resolution

  • Restores proper A/C compressor engagement in Buick, Chevrolet, Oldsmobile, and Pontiac vehicles
  • Resolves intermittent or non-functioning air conditioning compressor issues
  • Eliminates electrical faults caused by worn or damaged relays
  • Prevents HVAC system failures related to compressor control
  • Addresses relay-related HVAC electrical circuit interruptions

Installation Notes and Tips

When installing the Standard Ignition RY-20 relay, ensure the vehicle's ignition is off and the battery is disconnected to prevent electrical shorts. The included mounting bracket should be used to secure the relay in its designated location within the HVAC system. Verify that the female rectangular connector and male blade terminals align correctly with the vehicle's wiring harness. After installation, test the A/C compressor operation to confirm proper relay function.

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications, providing reliable performance and durability. The RY-20 A/C Compressor Control Relay undergoes rigorous quality control testing to ensure consistent operation. While specific warranty details may vary, Standard Ignition typically offers coverage against defects in materials and workmanship, supporting long-term vehicle HVAC system reliability.

BrandStandard Ignition
Part NumberRY-20
Amperage Rating15 A
Connector GenderFemale
Connector ShapeRectangular
ContentsRelay
Continuous DutyNo
FunctionsRelay
Mounting Bracket(s) IncludedYes
Terminal GenderMale
Terminal TypeBlade
Voltage12

This part fits 283 vehicles. Search below:

YearMakeModelBody TypeLitersCylindersPositionNotes
1992ChevroletCommercial ChassisN/ARectangular Shape
1992OldsmobileCutlass CieraN/A
1991ChevroletCommercial ChassisN/ARectangular Shape
1991OldsmobileCutlass CalaisN/AMetal Housing
1990BuickLeSabre3.8LV6N/AHigh Blower
1990BuickLeSabre5.0LV8N/AHigh Blower
1990BuickRegalN/A
1990ChevroletCapriceN/A
1990Oldsmobile98N/AHigh Blower
1990OldsmobileCustom CruiserN/AHigh Blower
1990PontiacBonnevilleN/AHigh Blower
1989BuickLeSabre3.8LV6N/AHigh Blower
1989BuickLeSabre5.0LV8N/AHigh Blower
1989BuickRegalN/A
1989ChevroletCapriceN/A
1989Oldsmobile98N/AHigh Blower
1989OldsmobileCustom CruiserN/AHigh Blower
1989OldsmobileDelta 88N/AHigh Blower
1989PontiacBonnevilleN/AHigh Blower
1989PontiacSafariN/AMetal Housing
1988BuickLeSabre3.8LV6N/AHigh Blower
1988BuickLeSabre5.0LV8N/AHigh Blower
1988BuickRegalN/A
1988ChevroletCapriceN/A5-blade terminal for automatic transmission spark control relay.
1988ChevroletMonte CarloN/A
1988Oldsmobile98N/AHigh Blower
1988OldsmobileCustom CruiserN/AHigh Blower
1988OldsmobileCutlass CieraN/ASilver
1988OldsmobileDelta 88N/A
1988PontiacBonnevilleN/AHigh Blower
1988PontiacSafariN/AMetal Housing
1987BuickLeSabre3.8LV6N/AHigh Blower
1987BuickLeSabre5.0LV8N/AHigh Blower
1987BuickRegalN/A
1987ChevroletCapriceN/A5-blade terminal for automatic transmission spark control relay.
1987ChevroletEl CaminoN/A
1987ChevroletMonte CarloN/A
1987Oldsmobile98N/AHigh Blower
1987OldsmobileCustom CruiserN/AHigh Blower
1987OldsmobileCutlassN/AHigh Blower
1987OldsmobileCutlass CieraN/ASilver
1987OldsmobileDelta 88N/AHigh Blower
1987OldsmobileDelta 88N/ARectangular Shape
1987PontiacBonnevilleN/ASquare Relay
1987PontiacGrand PrixN/A
1987PontiacSafariN/A
1987PontiacTempestN/A
1986BuickLeSabre3.0LV6N/AHigh Blower
1986BuickLeSabre3.8LV6N/AHigh Blower
1986BuickLeSabre5.0LV8N/AHigh Blower
1986BuickRegalN/A
1986BuickRivieraN/A
1986ChevroletCapriceN/A5-blade terminal for automatic transmission spark control relay.
1986ChevroletEl CaminoN/A
1986ChevroletMonte CarloN/A
1986Oldsmobile98N/AHigh Blower
1986OldsmobileCustom CruiserN/AHigh Blower
1986OldsmobileCutlassN/AHigh Blower
1986OldsmobileCutlass CieraN/ASilver
1986OldsmobileDelta 88N/AHigh Blower
1986OldsmobileDelta 88N/ARectangular Shape
1986OldsmobileToronadoN/A
1986PontiacBonnevilleN/A
1986PontiacGrand PrixN/A
1986PontiacParisienneN/A5-blade terminal for automatic transmission spark control relay.
1986PontiacParisienneN/A
1985BuickLeSabreN/A
1985BuickRegalN/A
1985BuickRivieraN/A
1985ChevroletCapriceN/AHigh Blower
1985ChevroletEl CaminoN/A
1985ChevroletImpalaN/A
1985ChevroletMonte CarloN/A
1985Oldsmobile98N/AHigh Blower
1985OldsmobileCutlassN/AHigh Blower
1985OldsmobileCutlass CieraN/ASilver
1985OldsmobileCutlass SupremeN/ARectangular Shape
1985OldsmobileDelta 88N/ARectangular Relay
1985OldsmobileToronadoN/A
1985PontiacBonnevilleN/ASquare Relay
1985PontiacGrand PrixN/A
1985PontiacParisienneN/A
1984BuickLeSabreN/A
1984BuickRegalN/A
1984BuickRivieraN/A
1984ChevroletCapriceN/AHVAC Automatic Temperature Control (ATC) Relay with Bracket
1984ChevroletEl CaminoN/A
1984ChevroletImpalaN/A
1984ChevroletMonte CarloN/A
1984OldsmobileCustom CruiserN/A
1984OldsmobileCutlass SupremeN/AHVAC Automatic Temperature Control (ATC) Relay with Bracket
1984OldsmobileDelta 88SedanN/A
1984OldsmobileToronadoN/A
1984PontiacBonnevilleN/A
1984PontiacGrand PrixN/A
1984PontiacParisienneN/A
1983BuickLeSabreN/A
1983BuickRegalN/A
1983BuickRivieraN/A
1983ChevroletCapriceN/AHVAC Automatic Temperature Control (ATC) Relay with Bracket
1983ChevroletEl CaminoN/A
1983ChevroletImpalaN/A
1983ChevroletMalibuN/A
1983ChevroletMonte CarloN/A
1983Oldsmobile98N/A
1983OldsmobileCustom CruiserN/A
1983OldsmobileCutlass SupremeN/A
1983OldsmobileDelta 88SedanN/A
1983OldsmobileToronadoN/A
1983PontiacBonnevilleN/A
1983PontiacGrand LeMansN/ACompatible with vehicles equipped with Canada Emissions.
1983PontiacGrand PrixN/A
1983PontiacParisienneN/A
1982BuickLeSabreN/A
1982BuickRegalN/A
1982BuickRivieraN/A
1982ChevroletCapriceN/AHVAC Automatic Temperature Control (ATC) Relay with Bracket
1982ChevroletEl CaminoN/A
1982ChevroletImpalaN/A
1982ChevroletMalibuN/A
1982ChevroletMonte CarloN/A
1982Oldsmobile98N/A
1982OldsmobileCustom CruiserN/A
1982OldsmobileCutlass SupremeN/A
1982OldsmobileDelta 88SedanN/A
1982OldsmobileToronadoN/A
1982PontiacBonnevilleN/A
1982PontiacGrand LeMansN/ACompatible with vehicles equipped with Canada Emissions.
1982PontiacGrand PrixN/A
1982PontiacParisienneN/A
1981BuickCenturyN/Aw/ Bracket; 5 Blade Term.
1981BuickLeSabreN/A
1981BuickRegalN/ARectangular Relay
1981BuickRegalN/A
1981BuickRivieraN/A
1981BuickSkylarkN/AHigh Blower
1981ChevroletCapriceN/A
1981ChevroletChevetteN/A
1981ChevroletEl CaminoN/A
1981ChevroletImpalaN/A
1981ChevroletMalibuN/A
1981ChevroletMonte CarloN/A
1981Oldsmobile98N/A
1981OldsmobileCustom CruiserN/A
1981OldsmobileCutlassN/A
1981OldsmobileCutlass CalaisN/A
1981OldsmobileCutlass CruiserN/A
1981OldsmobileCutlass SupremeN/A
1981OldsmobileDelta 88SedanN/A
1981OldsmobileToronadoN/A
1981PontiacAcadian1.6LL4N/A
1981PontiacBonnevilleN/A
1981PontiacBonnevilleN/AHVAC Automatic Temperature Control (ATC) Relay with Bracket
1981PontiacCatalinaN/A
1981PontiacFirebirdN/A
1981PontiacGrand LeMansN/A
1981PontiacGrand PrixN/A
1981PontiacLaurentianN/A
1981PontiacLeMansN/A
1981PontiacParisienneN/A
1981PontiacParisienne3.8LV6N/AStamping No. 10018449
1981PontiacParisienne4.3LV8N/AStamping No. 10018449
1981PontiacParisienne4.4LV8N/AStamping No. 10018449
1981PontiacParisienne5.0LV8N/AStamping No. 10018449
1981PontiacParisienne5.7LV8N/AStamping No. 10018449
1980BuickCenturyN/Aw/ Bracket; 5 Blade Term.
1980BuickLeSabreN/A
1980BuickRegalN/A
1980BuickRivieraN/A
1980ChevroletCapriceN/A
1980ChevroletChevetteN/AHigh Blower
1980ChevroletEl CaminoN/A
1980ChevroletImpalaN/A
1980ChevroletMalibuN/A
1980ChevroletMonte CarloN/A
1980ChevroletMonza2.5LL4N/A
1980ChevroletMonza3.8LV6N/A
1980Oldsmobile98N/A
1980OldsmobileCustom CruiserN/A
1980OldsmobileCutlassN/A
1980OldsmobileCutlass CalaisN/A
1980OldsmobileCutlass CruiserN/A
1980OldsmobileCutlass SalonN/A
1980OldsmobileCutlass SupremeN/A
1980OldsmobileDelta 88SedanN/A
1980OldsmobileToronadoN/A
1980PontiacAcadianN/A
1980PontiacBonnevilleN/A
1980PontiacCatalinaN/A
1980PontiacFirebirdN/AFitment: Excludes vehicles with automatic temperature control.
1980PontiacGrand AmN/A
1980PontiacGrand LeMansN/A
1980PontiacGrand PrixN/A
1980PontiacLaurentianN/A
1980PontiacLeMansN/A
1980PontiacParisienneN/A
1980PontiacPhoenixN/AHVAC Automatic Temperature Control (ATC) Relay with Bracket
1980PontiacSunbirdN/A
1979BuickCenturyN/A
1979BuickLeSabreN/A
1979BuickRegalN/A
1979BuickRivieraN/A
1979ChevroletCapriceN/ANot compatible with automatic AC systems.
1979ChevroletCapriceN/A
1979ChevroletChevetteN/A
1979ChevroletEl CaminoN/A
1979ChevroletImpalaN/A
1979ChevroletMalibuN/A
1979ChevroletMonte CarloN/A
1979Oldsmobile98N/A
1979OldsmobileCustom CruiserN/A
1979OldsmobileCutlassN/A
1979OldsmobileCutlass CalaisN/A
1979OldsmobileCutlass SalonN/A
1979OldsmobileCutlass SupremeN/A
1979OldsmobileDelta 88N/A
1979OldsmobileToronadoN/A
1979PontiacAcadianN/A
1979PontiacBonnevilleN/A
1979PontiacCatalinaN/A
1979PontiacFirebirdN/A
1979PontiacGrand AmN/A
1979PontiacGrand LeMansN/A
1979PontiacGrand PrixN/A
1979PontiacLaurentianN/A
1979PontiacLeMansN/A
1979PontiacParisienneN/A
1979PontiacPhoenixN/A
1979PontiacSunbirdN/A
1978BuickCenturyN/A
1978BuickLeSabreN/A
1978BuickLeSabreN/AFitment: Excludes vehicles with automatic temperature control.
1978BuickRegalN/A
1978BuickRiviera5.7LV8N/Aw/ Bracket Perpendicular to Relay
1978BuickRiviera6.6LV8N/Aw/ Bracket Perpendicular to Relay
1978BuickRivieraN/AFitment: Excludes vehicles with automatic temperature control.
1978ChevroletCapriceN/Aw/ Manual AC
1978ChevroletCapriceN/A
1978ChevroletChevetteN/A
1978ChevroletEl CaminoN/A
1978ChevroletImpalaN/A
1978ChevroletMalibuN/A
1978ChevroletMonte CarloN/A
1978Oldsmobile98N/A
1978OldsmobileCustom CruiserN/A
1978OldsmobileCutlassN/A
1978OldsmobileCutlass SalonN/A
1978OldsmobileCutlass SupremeN/A
1978OldsmobileDelta 88N/A
1978PontiacAcadianN/A
1978PontiacBonnevilleN/A
1978PontiacCatalinaN/A
1978PontiacFirebirdN/A
1978PontiacGrand AmN/A
1978PontiacGrand LeMansN/A
1978PontiacGrand PrixN/A
1978PontiacLaurentianN/A
1978PontiacLeMansN/A
1978PontiacParisienneN/A
1978PontiacPhoenixN/Aw/ Bracket Perpendicular to Relay
1978PontiacSunbirdN/A
1977BuickCentury3.8LV6N/Aw/ Bracket Perpendicular to Relay
1977BuickCentury5.0LV8N/Aw/ Bracket Perpendicular to Relay
1977BuickCentury5.7LV8N/Aw/ Bracket Perpendicular to Relay
1977BuickCentury6.6LV8N/Aw/ Bracket Perpendicular to Relay
1977BuickCenturyN/A
1977BuickLeSabreN/A
1977BuickLeSabreN/AFitment: Excludes vehicles with automatic temperature control.
1977BuickRiviera5.7LV8N/Aw/ Bracket Perpendicular to Relay
1977BuickRiviera6.6LV8N/Aw/ Bracket Perpendicular to Relay
1977BuickRivieraN/AFitment: Excludes vehicles with automatic temperature control.
1977ChevroletCapriceN/A
1977ChevroletImpalaN/A
1977Oldsmobile98N/A
1977OldsmobileCustom CruiserN/A
1977OldsmobileCutlassN/A5 Term ABS Relay
1977OldsmobileDelta 88N/A
1977PontiacBonnevilleN/AFitment: Excludes vehicles with automatic temperature control.
1977PontiacCatalinaN/A
1977PontiacParisienneN/AHigh Blower
1976Oldsmobile98N/A5-blade terminal for automatic transmission spark control relay.
1976OldsmobileDelta 88SedanN/A5-blade terminal for automatic transmission spark control relay.
1976PontiacCatalinaN/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:

10018449198201R12203591156-168583102AR163AR203MT0509R808RAC3061

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