Home› HVAC > Motors, Core, Case and Related Components› Standard Ignition RU-403 HVAC Blower Motor Resistor
Standard Ignition RU-403 HVAC Blower Motor ResistorOE Quality 60-Day Returns
Standard Ignition RU-403 HVAC Blower Motor Resistor - view 1
Standard Ignition RU-403 HVAC Blower Motor Resistor - view 2
Standard Ignition RU-403 HVAC Blower Motor Resistor - view 3
Standard Ignition RU-403 HVAC Blower Motor Resistor - view 4
Standard Ignition RU-403 HVAC Blower Motor Resistor - view 5
Standard Ignition RU-403 HVAC Blower Motor Resistor - view 6
Standard Ignition RU-403 HVAC Blower Motor Resistor - view 7
Standard Ignition RU-403 HVAC Blower Motor Resistor - view 8
Part #: RU-403

Standard Ignition RU-403 HVAC Blower Motor Resistor

⚙️ 79 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$22.09Free 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: Ford, Mercury, and Lincoln, Crown Victoria, Grand Marquis, Marauder, Town Car, Country Squire, LTD Crown Victoria, Colony Park, LTD, and Mark VI
🔄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 HVAC Blower Motor Resistor options

Reliable HVAC Blower Motor Resistor for Ford, Lincoln, and Mercury

The Standard Ignition RU-403 HVAC blower motor resistor is designed to restore proper blower motor speed control in select Ford, Lincoln, and Mercury vehicles. Engineered for durability and precise fitment, this resistor ensures consistent HVAC performance in models like the Crown Victoria and Town Car.

Key Features of the Standard Ignition RU-403

  • Bolt-on attachment method for secure installation
  • Female rectangular connector with 4 cavities
  • Supports 3-5 blower motor speeds
  • Includes mounting bracket(s) for easy fitment
  • Blade-type male terminals, 4 in total
  • No wiring harness included, designed for direct replacement

Detailed Product Description

The RU-403 blower motor resistor by Standard Ignition is specifically engineered to fit Ford, Lincoln, and Mercury vehicles including the Colony Park, Crown Victoria, Grand Marquis, LTD, LTD Crown Victoria, Marauder, Mark VI, and Town Car models. This resistor features a bolt-on attachment method that ensures a secure and stable fit within the HVAC system. The female rectangular connector with four cavities allows for a reliable electrical connection, while the blade-type male terminals provide efficient current flow to control blower motor speeds ranging from three to five settings. The included mounting bracket(s) facilitate straightforward installation without the need for additional hardware. This part does not come with a wiring harness, making it ideal for direct replacement in compatible vehicles.

Common HVAC Issues Addressed by This Resistor

  • Inconsistent blower motor speeds or blower stuck on one speed
  • Complete loss of blower motor function
  • Intermittent HVAC blower operation
  • Overheating or failure of the blower motor resistor
  • Electrical connection problems within the blower motor circuit

Installation Notes and Tips

  • Ensure the vehicle is turned off and the battery is disconnected before installation
  • Locate the blower motor resistor within the HVAC housing, typically near the blower motor
  • Remove the old resistor by unbolting and disconnecting the electrical connector
  • Install the RU-403 resistor using the included mounting bracket(s) and bolt it securely
  • Reconnect the female rectangular connector and verify all terminals are properly seated
  • Test the blower motor speeds after installation to confirm proper operation

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications, ensuring reliable performance and fitment. The RU-403 blower motor resistor undergoes rigorous quality control testing to maintain durability and electrical integrity. Please refer to Standard Ignition's warranty policy for specific coverage details.

BrandStandard Ignition
Part NumberRU-403
Attachment MethodBolt On
Connector GenderFemale
Connector ShapeRectangular
Hardware IncludedNo
Harness Length - cmNo wire
Harness Length - inchesNo wire
Mounting Bracket(s) IncludedYes
Number Of Connector Cavities4
Number Of Speeds3-5 Speed
Terminal GenderMale
Terminal TypeBlade
Wiring Harness IncludedNo

This part fits 79 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2005FordCrown VictoriaN/AFitment: Excludes vehicles with automatic temperature control.
2005MercuryGrand MarquisN/AFitment: Excludes vehicles with automatic temperature control.
2004FordCrown VictoriaN/AFitment: Excludes vehicles with automatic temperature control.
2004FordGrand MarquisN/AFitment: Excludes vehicles with automatic temperature control.
2004MercuryGrand MarquisN/AFitment: Excludes vehicles with automatic temperature control.
2004MercuryMarauder4.6LV8N/ANot compatible with automatic AC systems.
2003FordCrown VictoriaN/AFitment: Excludes vehicles with automatic temperature control.
2003FordGrand MarquisN/AFitment: Excludes vehicles with automatic temperature control.
2003MercuryGrand MarquisN/AFitment: Excludes vehicles with automatic temperature control.
2003MercuryMarauder4.6LV8N/ANot compatible with automatic AC systems.
2002FordCrown VictoriaN/AFitment: Excludes vehicles with automatic temperature control.
2002FordGrand MarquisN/AFitment: Excludes vehicles with automatic temperature control.
2002MercuryGrand MarquisN/AFitment: Excludes vehicles with automatic temperature control.
2001FordCrown VictoriaN/AFitment: Excludes vehicles with automatic temperature control.
2001FordGrand MarquisN/AFitment: Excludes vehicles with automatic temperature control.
2001MercuryGrand MarquisN/AFitment: Excludes vehicles with automatic temperature control.
2000FordCrown VictoriaN/AFitment: Excludes vehicles with automatic temperature control.
2000FordGrand MarquisN/AFitment: Excludes vehicles with automatic temperature control.
2000MercuryGrand MarquisN/AFitment: Excludes vehicles with automatic temperature control.
1999FordCrown VictoriaN/AFitment: Excludes vehicles with automatic temperature control.
1999FordGrand MarquisN/AFitment: Excludes vehicles with automatic temperature control.
1999MercuryGrand MarquisN/AFitment: Excludes vehicles with automatic temperature control.
1998FordCrown VictoriaN/AFitment: Excludes vehicles with automatic temperature control.
1998FordGrand MarquisN/AFitment: Excludes vehicles with automatic temperature control.
1998MercuryGrand MarquisN/AFitment: Excludes vehicles with automatic temperature control.
1997FordCrown VictoriaN/AFitment: Excludes vehicles with automatic temperature control.
1997FordGrand MarquisN/AFitment: Excludes vehicles with automatic temperature control.
1997LincolnTown CarN/Aw/ Manual AC
1997MercuryGrand MarquisN/AFitment: Excludes vehicles with automatic temperature control.
1996FordCrown VictoriaN/AFitment: Excludes vehicles with automatic temperature control.
1996FordGrand MarquisN/AFitment: Excludes vehicles with automatic temperature control.
1996LincolnTown CarN/Aw/ Manual AC
1996MercuryGrand MarquisN/AFitment: Excludes vehicles with automatic temperature control.
1995FordCrown VictoriaN/AFitment: Excludes vehicles with automatic temperature control.
1995FordGrand MarquisN/AFitment: Excludes vehicles with automatic temperature control.
1995LincolnTown CarN/Aw/ Manual AC
1995MercuryGrand MarquisN/AFitment: Excludes vehicles with automatic temperature control.
1994FordCrown VictoriaN/AFitment: Excludes vehicles with automatic temperature control.
1994LincolnTown CarN/Aw/ Manual AC
1994MercuryGrand MarquisN/AFitment: Excludes vehicles with automatic temperature control.
1993FordCrown VictoriaN/AFitment: Excludes vehicles with automatic temperature control.
1993LincolnTown CarN/Aw/ Manual AC
1993MercuryGrand MarquisN/AFitment: Excludes vehicles with automatic temperature control.
1992FordCrown VictoriaN/AFitment: Excludes vehicles with automatic temperature control.
1992LincolnTown CarN/Aw/ Manual AC
1992MercuryGrand MarquisN/AFitment: Excludes vehicles with automatic temperature control.
1991FordGrand MarquisN/AFitment: Excludes vehicles with automatic temperature control.
1991FordLTD Crown VictoriaN/A
1991LincolnTown CarN/Aw/ Manual AC
1991MercuryColony Park5.0LV8N/AFitment: Excludes vehicles with automatic temperature control.
1991MercuryGrand MarquisN/Aw/o Auto. Temp Control; 4 Term.
1990FordLTD Crown VictoriaN/Aw/ Manual AC
1990LincolnTown CarN/AFitment: Excludes vehicles with automatic temperature control.
1990MercuryColony Park5.0LV8N/A
1990MercuryGrand MarquisN/Aw/o Auto. Temp Control; 4 Term.
1989MercuryColony Park5.0LV8N/A
1989MercuryGrand MarquisN/A4 Term.
1988MercuryColony Park5.0LV8N/A
1988MercuryGrand MarquisN/A4 Term.
1987MercuryColony Park5.0LV8N/A
1987MercuryGrand MarquisN/A4 Term.
1986MercuryGrand MarquisN/A4 Term.
1985MercuryGrand MarquisN/A4 Term.
1984MercuryGrand MarquisN/A4 Term.
1983FordLTDN/A
1983LincolnMark VIN/A
1983LincolnTown CarN/A
1983MercuryGrand MarquisN/A
1982FordLTDN/A
1982LincolnMark VIN/A
1982LincolnTown CarN/A
1982MercuryGrand Marquis4.2LV8N/A
1982MercuryGrand Marquis5.0LV8N/A
1981FordLTDN/A
1981LincolnMark VIN/A
1981LincolnTown CarN/A
1981MercuryGrand Marquis4.2LV8N/A
1981MercuryGrand Marquis5.0LV8N/A
1981MercuryGrand Marquis5.8LV8N/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:

203202BMR06144P137953-69640970-04131973-016BMRA232BR307E3AZ19A706AMT1887RU1097RUC1082YH1702

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

Related Articles