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Vacuum Modulators

Vacuum Modulators

The vacuum modulator is a vital component of automatic transmissions. It tells the transmission what kind of load is being put on it, allowing the transmission to react with the proper line pressures and shift points. Over time, modulators can develop leaks, suffer ruptured diaphragms, become bent, etc. This can not only cause annoying drivability issues, but it can lead to premature transmission failure. TCI® comes to the rescue with a full line of new, adjustable modulators.

  • Fights premature transmission failure & renews performance
  • Allows ability to slightly raise/lower part throttle shift points & line pressures
  • Screws inside the vacuum nipple can be adjusted for more or less diaphragm preload

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  1. Ford, 1974-86 C4 Vacuum Adjustable Modulator, Push-in, Green Stripe

    Ford, 1974-86 C4 Vacuum Adjustable Modulator, Push-in, Green Stripe

    SKU: 260101
    $15.60

    C4 Vacuum Modulator Adjustable Push-in 74 - 86 w/ Green Stripe Learn More
  2. GM, 1963-73, Powerglide Adjustable Vacuum Modulator

    GM, 1963-73, Powerglide Adjustable Vacuum Modulator

    SKU: 280001
    $20.59

    Powerglide Vacuum Modulator, adjustable, 1963-1973 Learn More
  3. GM, TH350/TH400 Adjustable Vacuum Modulator

    GM, TH350/TH400 Adjustable Vacuum Modulator

    SKU: 350001
    $16.10

    TH350 Vacuum Modulator, adjustable Learn More
  4. Ford, 1966-72 C4/C6 Adjustable Vacuum Modulator, Screw-in, White Stripe

    Ford, 1966-72 C4/C6 Adjustable Vacuum Modulator, Screw-in, White Stripe

    SKU: 360001
    $21.24

    C4/C6 Vacuum Modulator Adjustable Push-in 66 - 72 w/ White Stripe Learn More
  5. Ford, 1972-91 C6 Adjustable Vacuum Modulator, Push-in, Purple Stripe Late

    Ford, 1972-91 C6 Adjustable Vacuum Modulator, Push-in, Purple Stripe Late

    SKU: 360002
    $21.24

    C6 Vacuum Modulator Adjustable Push-in 72 - up w/ Purple Stripe Learn More
  6. Ford, 1977-91 C6 Adjustable Vacuum Modulator, Push-in, Green Stripe

    Ford, 1977-91 C6 Adjustable Vacuum Modulator, Push-in, Green Stripe

    SKU: 360003
    $21.24

    C6 Vacuum Modulator Adjustable Push-in 77 - up w/ Green Stripe Learn More

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per page

Set Descending Direction