Home› Electrical, Charging and Starting > Relays› Standard Ignition RY1981 Alternator Diode Relay
Standard Ignition RY1981 Alternator Diode RelayOE Quality 60-Day Returns
Part #: RY1981

Standard Ignition RY1981 Alternator Diode Relay

27 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$114.11Free 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: Audi and Volkswagen, R8, Touareg, TT, TT Quattro, TT RS Quattro, and TTS Quattro
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? See all Alternator Diode Relay options

Alternator Diode Relay for Audi and Volkswagen

Standard Ignition RY1981 is a 12-volt alternator diode relay built for charging-system service on select Audi and Volkswagen applications. It uses a push-on mounting style with four male blade terminals and a 30 amp amperage rating for direct electrical connection in the relay circuit.

Compatible With Audi R8, TT, TT Quattro, TTS Quattro, TT RS Quattro, and Volkswagen Touareg applications, this relay supports charging-system repair where the original unit has failed. The Standard Ignition RY1981 is a direct-fit electrical replacement for vehicles that use the specified relay configuration.

  • 12-volt alternator diode relay for charging and starting electrical systems
  • 30 amp amperage rating for relay circuit service
  • Push-on mounting type with four male blade terminals
  • Male connector layout with male terminal gender
  • Direct replacement for select Audi R8, TT, and Volkswagen Touareg applications

Fitment and Application Details

  • Fits 2020 Audi R8, N/A
  • Fits 2017-2018 Audi R8, N/A
  • Fits 2014-2015 Audi R8, N/A
  • Fits 2008-2012 Audi R8, N/A
  • Fits 2012-2015 Audi TT Quattro, N/A
  • Fits 2012-2015 Audi TTS Quattro, N/A
  • Fits 2012-2014 Audi TT, N/A
  • Fits 2012-2013 Audi TT RS Quattro, N/A
  • Fits 2007-2010 Volkswagen Touareg, N/A

This part cross-references Audi/VW OE number 1H5951253 and aftermarket references AR7484 and R7484 for the same application. Standard Ignition RY1981 also cross-references Standard Ignition RY1981.

What This Relay Helps Address

  • Charging-system relay failure
  • Intermittent alternator operation
  • Electrical connection issues at the relay terminals
  • Voltage control problems in the charging circuit
  • Starting or charging faults traced to the relay

Installation Notes and Quality Assurance

Verify terminal style, connector gender, amperage rating, and voltage before installation. Match the relay to the original part number and confirm vehicle application for Audi R8, Audi TT, Audi TT Quattro, Audi TTS Quattro, Audi TT RS Quattro, or Volkswagen Touareg service. Standard Ignition is a recognized aftermarket electrical parts brand, and RY1981 is cataloged as an OE-style replacement relay for the listed applications.

BrandStandard Ignition
Part NumberRY1981
Mounting Hardware IncludedNo
Mounting Bracket IncludedNo
Amperage Rating30 a
Connector GenderMale; male; male; male
Connector QuantityRelay
FunctionsRelay
Mounting TypePush on
Terminal GenderMale
Terminal Quantity4
Terminal TypeBlade
Voltage12

This part fits 27 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2020AudiR8N/A
2018AudiR8N/A
2017AudiR8N/A
2015AudiR8N/A
2015AudiTT Quattro2.0LL4N/A
2015AudiTTS QuattroN/A
2014AudiR8N/A
2014AudiTTN/A
2014AudiTT Quattro2.0LL4N/A
2014AudiTTS QuattroN/A
2013AudiTTN/A
2013AudiTT Quattro2.0LL4N/A
2013AudiTT RS QuattroN/A
2013AudiTTS QuattroN/A
2012AudiR8N/A
2012AudiTTN/A
2012AudiTT Quattro2.0LL4N/A
2012AudiTT RS QuattroN/A
2012AudiTTS QuattroN/A
2011AudiR8N/A
2010AudiR8N/A
2010VolkswagenTouaregN/A
2009AudiR8N/A
2009VolkswagenTouaregN/A
2008AudiR8N/A
2008VolkswagenTouaregN/A
2007VolkswagenTouaregN/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:

1H5951253AR7484R7484RY1981

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