Automatic Transmission Vacuum Modulator
Hover over the image to zoom in
Share this:

Pro-King Automatic Transmission Vacuum Modulator

Part No. MD-20 Warranty Details  
Quantity  Add to Cart

See if this part fits a specific vehicle.

Check Vehicle Fit

Fully adjustable vacuum modulator to maintain accurate shift points.
Back To Top
O.E.M. Replacement:Yes
Transmission Manufacturer:Ford
Transmission Model:C4; C5


by PowerReviews
Pro-KingAutomatic Transmission Vacuum Modulator

(based on 1 review)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Reviewed by 1 customer

Displaying review 1

Back to top

(6 of 9 customers found this review helpful)


works good rite out of the box


from homosassa, fl.

See all my reviews

Ask me a question

Verified Buyer
3 or more reviews submitted


  • Easy replacement
  • Easy To Use


  • Needs adjustment info inc

Best Uses

  • Trucks

Comments about Pro-King Automatic Transmission Vacuum Modulator:

works ok rite out of the box , but could use adjustment info included in box

  • Car & Truck:
  • Auto Enthusiast, Backyard Mechanic, Competitive Driver, Truck Enthusiast

Displaying review 1

Back to top

Do you have questions about this product?


Ask a question, get answers from real customers and in-house experts. For further assistance, please review your support options on our Contact Us page.

1 Question | 2 Answers
Displaying question 1
  • Q:

    is this hard to adjust. this is the first time i have put in one and i am not a mechanic .,so do i need to take it to one or , is this something i can do myself
    Asked on 7/27/2010 by baba from mocksville nc

    2 answers



      For step by step instructions i recommend that you go to your nearest Advance Auto Parts store and purchase a repair manual.

      Answered on 7/27/2010 by Kevin from AAP
    • A:

      It Adjust where you plug in the vacuum line. Thin screw driver will do it!. I never adjusted one before today and it was easy to adjust...

      Answered on 12/5/2013 by Jasper Sandy from Bunn, NC
Displaying question 1

Do you have a question about this product? 

Check out the specials in our monthly flyer.
Disclaimer We strive to keep all information accurate and up-to-date; however, product availability, pricing, promotions and store hours are subject to change without notice. Please contact Customer Care if you have any questions or corrections.