Skip to Main Content Skip to Footer Links
Error occured! Please reload the page and try again
Choose a Store
Open till 
There are vehicles in your garage

Free shipping on orders over $25.

Enroll in Speed Perks for more savings.

Cart is empty!

Add Something to the cart

includes estimated shipping

Vehicle added


Find parts for the selected vehicle:

View Vehicles
Are you sure you want to delete this vehicle?

    Add a

    Add a

    Holley Vacuum Secondary Diaphragm

    Loading ...
    • Product Details

      Part No. 135-4

      Warranty Details (90 DAY REPLACEMENT IF DEFECTIVE)

      Vacuum secondaries are activated by venturii velocity through the primary venturii and further aided by secondary venturii velocity. Engine/manifold vacuum is not related and has no effect on the operation of the carburetors secondary system.

      Product Features:

      • Vacuum Secondary Diaphragm

    • Read Review
    • Q & A