Rebuild Kit VR Series

2 & 4 Port Rebuild Kit for VR Series Fuel Pressure Regulator 12-852 and 12-865

PART# 12-866

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2 & 4 Port Regulator Rebuild Kit for 12-852 and 12-865 VR Series Regulators. Includes complete diaphragm, spring and rebuild instructions.


  • Rebuild kit for Holley VR Series Regulators (pn# 12-852 and 12-865)


Component TypeRegulator Rebuild Kit
Emission Code3
Product TypeFuel Pressure Regulator Rebuild Kit
Part Number12-866

Service Parts


This part is legal for use on Uncontrolled (Non-Emissions Controlled) Vehicles or Racing Vehicles.

The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:

  • 1965 and older U.S. manufactured California Certified vehicles
  • 1967 and older U.S. manufactured Federally Certified vehicles
  • 1967 and older Foreign manufactured vehicle

Racing Vehicles are vehicles that are used exclusively for racing or other forms of competition that are not registered and that may never be used on the street.

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      *Free Shipping & Handling only offered to the contiguous US on orders over $100.

      Some parts are not legal for use in California or other states with similar regulations.

       X  Decal Days 2018
       X  Decal Days 2018