HomeElectrical, Charging and Starting > Voltage RegulatorStandard Ignition VR-438 Voltage Regulator
Part #: VR-438

Standard Ignition VR-438 Voltage Regulator

28 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$199.43Free 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: Acura, Honda, and Sterling, NSX, Prelude, Legend, Accord, and 825
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Charging System Voltage Regulator for Acura and Honda Vehicles

The Standard Ignition VR-438 Charging System Voltage Regulator is designed to maintain optimal voltage levels in your vehicle's charging system. Engineered for select Acura and Honda models, this regulator ensures consistent electrical performance and helps protect your alternator and battery.

  • Connector Gender: Female with a single round connector
  • Terminal Type: Combination of blade and eye ring terminals
  • Terminal Quantity: 1 male blade, 1 male eye ring, and 4 additional terminals
  • Voltage Rating: 12 volts, suitable for standard automotive electrical systems
  • Compact Dimensions: 90.17 x 55.372 x 32.766 mm (3.55 x 2.18 x 1.29 inches)
  • No hardware, mounting brackets, or installation instructions included

Product Details and Specifications

The VR-438 voltage regulator from Standard Ignition is built to precise specifications to fit Acura and Honda vehicles including the Accord, Legend, NSX, and Prelude models. Its female round connector and mixed terminal types (blade and eye ring) provide secure and reliable electrical connections. The compact size allows for easy integration into the vehicle’s charging system without requiring additional mounting hardware. This 12-volt regulator is designed to control the alternator output voltage, preventing overcharging or undercharging of the battery, which can lead to electrical system failures.

Compatible Vehicles and Common Applications

This voltage regulator is compatible with the following makes and models:

  • Acura Accord
  • Acura Legend
  • Acura NSX
  • Honda Prelude

It is commonly used to address issues such as:

  • Fluctuating or unstable battery voltage
  • Battery not charging properly
  • Dim or flickering dashboard lights
  • Alternator overcharging or undercharging
  • Electrical system warning lights on the dashboard

Installation Notes and Tips

Installation of the Standard Ignition VR-438 voltage regulator requires basic electrical knowledge and proper tools. Since no hardware or mounting brackets are included, reuse existing components or source compatible mounting parts. Ensure the vehicle’s battery is disconnected before installation to prevent electrical shorts. Verify connector orientation and terminal connections match the vehicle’s wiring harness to avoid damage. Consult the vehicle’s service manual for detailed installation procedures specific to Acura Accord, Legend, NSX, and Honda Prelude models.

Quality Assurance and Warranty Information

Standard Ignition parts are manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. The VR-438 voltage regulator undergoes rigorous quality control testing to maintain consistent voltage regulation under various operating conditions. While hardware and instructions are not included, the product is backed by Standard Ignition’s limited warranty against defects in material and workmanship. Refer to the warranty documentation for specific terms and coverage details.

BrandStandard Ignition
Part NumberVR-438
Connector GenderFemale
Terminal GenderMale
Terminal TypeBlade; Eye Ring

This part fits 28 vehicles. Search below:

YearMakeModelPositionNotes
2005AcuraNSXN/A
2004AcuraNSXN/A
2003AcuraNSXN/A
2002AcuraNSXN/A
2001AcuraNSXN/A
2000AcuraNSXN/A
1999AcuraNSXN/A
1998AcuraNSXN/A
1997AcuraNSXN/A
1996AcuraNSXN/A
1995AcuraNSXN/A
1991HondaPreludeN/A
1990AcuraLegendN/A
1990HondaPreludeN/A
1989AcuraLegendN/A
1989HondaAccordN/A
1989HondaPreludeN/A
1988AcuraLegendN/A
1988HondaAccordN/A
1988HondaPreludeN/A
1987AcuraLegendN/A
1987HondaAccordN/A
1987HondaPreludeN/A
1986AcuraLegendN/A
1986HondaAccordN/A
1986HondaPreludeN/A
1985HondaAccordN/A
1985HondaPreludeN/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:

1260000540190190051V102127-151929-016631150PD201431150PD602486186100044KVR566R736RAA2779VR1033VR605

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