Black, Vacuum Advance Mechanism

Black, replacement vacuum advance. Does not fit HEI distributors.

PART# 84633

$22.57   Suggested Retail
$20.31   Your Price
Free Shipping on orders over $100*
In Stock  


Replacement vacuum advance mechanism for MSD Black Distributors equipped with vacuum advance (except the PN 8365, 83653 and PN 8362 HEI Distributors.)


Emission Code1
Part Number84633


This part is legal for use on Emissions Controlled Vehicles when used in accordance with the manufacturers application guide because it has a California Air Resources Board Executive Order number or is a direct or consolidated replacement part.

The following vehicles are considered Emissions Controlled Vehicles:

  • 1966 and newer U.S. manufactured California Certified vehicles
  • 1968 and newer U.S. manufactured Federally Certified vehicles
  • 1968 and newer Foreign manufactured vehicle

*Free Shipping & Handling only offered to the continental US on orders over $100.

Some parts are not legal for use in California or other states with similar regulations.