Vacuum Bypass Kit
Fits TH350/C, TH250/C, TH400, 3L80, TH375, C4, C5, C6
Also fits 4L60/65E when using 46-MOD and 4L80/85E when using 48-MOD

  1. Distributor Part Numbers

    TransGo VBP-VAC
    A & Reds VBP-VAC
    Capital Core
    MST VBP-VAC
    Natpro VBP-VAC
    OTS VBP-VAC
    PDQ TG-VBP-VAC
    PTW VBP-VAC
    Summit TRG-VBP-VAC
    Transtar T34161E
    WIT VBP-VAC
  2. Installation Icons

     

  3. General Details

    The TransGo Vacuum Bypass Kit is for use on supercharged and turbocharged vehicles with transmissions that are equipped with a vacuum modulator. The bypass valve exhausts the boost pressure going to the modulator so the internal diaphragm does not get ruptured under engine boosted driving conditions. This vacuum bypass kit quickly and easily T’s into the brake booster vacuum line or directly into the intake manifold.

    Corrects/Prevents Reduces:

    • Prevents boost pressure from damaging vacuum modulator
    • Prevents damage to transmission from incorrect pressure boost