Click on image to zoom

Moroso 1" Billet Carburetor Spacer - Fits Holley® 4500 Series Open Plenum Design

Carburetor Spacer, 1 in Thick, Open, Dominator Flange- Billet Aluminum, Each.
Return Shipping
Limited Supply: only 3 remaining
Availability: Same Day Shipping!
Shipping: Ships from Michigan.
Was: $72.24
Sale: $57.20
Save: 21%
Save: $15.04


  • Extends length of intake mixture column to improve air/fuel distribution
  • CNC machined from 6061-T6 billet aluminum to extremely accurate specifications
  • Billet aluminum eliminates porosity and improves engine appearance
  • Available with 4150/4160 and 4500 Series Holley® bolt patterns to fit a variety of carburetors
  • 4150/4160 Series Spacers available in 1/2", 1" and 2" thicknesses with open plenum and 4-hole designs to suit tuning requirements; 4500 Series (Dominator) Spacer is 1" thick with open plenum
  • As a general rule, open designs increase plenum volume for improved high rpm power, while 4-hole designs increase mixture velocity for improved low-speed and mid-range torque

    Pit Stop USA offers Moroso 1" Billet Carburetor Spacer - Fits Holley® 4500 Series Open Plenum Design 64951 at low everyday prices. Be sure to check out all of our products from Moroso Performance Products including Moroso Performance Products Carburetor Adapters.
  • Details

    • MOR64951
    • MOR64951
    • 84663649516
    • Moroso Performance Products
    • Available
    • Same Day Shipping!
    • New

    Shipping Information

    • Item Requires Shipping
    • 1.5 lbs.
    • W8.5500” x H1.0000” x L14.1500”
    • Ships from Michigan.

    Customer Reviews

    Comment Total Reviews (0)

    Write the First Review!

    You must login to post a review.