Regulator Rebuild Kit for 12-840 Billet Regulator. Includes complete diaphragm, spring and rebuild instructions.

Features:
  • Fuel Pressure regulator rebuild kit for Holley 12-840 regulator
  • Includes diaphragm and spring
  • More From This Category

    MSD Magneto Hold Down Clamp, 12LT Pro Mag, Steel, Stud, Nut, For Chevrolet, V8, Each

    MSD Magneto Hold Down Clamp, 12LT Pro Mag, Steel, Stud, Nut, For Chevrolet, V8, Each

    $194.18

    NOS Nitrous System, Cheater 4bbl, 150-250HP, 10lb bottle

    NOS Nitrous System, Cheater 4bbl, 150-250HP, 10lb bottle

    $1,933.71

    MSD Spark Plug Wires, Copper, Silicone, Multi-Angle, 8.5mm Dia, Red, GM LS Engines, Set

    MSD Spark Plug Wires, Copper, Silicone, Multi-Angle, 8.5mm Dia, Red, GM LS Engines, Set

    $213.43