Product Summary

Universal Fit, 4" Overall Thickness, Aluminum, Natural

  • This open carburetor spacer fits square bore carburetors such as Holley and Edelbrock four barrel carburetors
  • 4" height with open design adds plenum volume to increase high RPM horsepower
  • Can be used to raise your carburetor to achieve a through the hood look
  • Also used to raise your carburetors and hood scoop on open engine cars to get the proper hood scoop height
  • Hardware is not included - we suggest two carburetor stud kits part number 13560 for use with this adapter

Key Specs

MFG. Part #5606091
Carburetor Flange Type4-Barrel Square Bore
Overall Thickness4"
Material TypeAluminum

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Speedway Motors 5606091 Details

Aluminum Holley open carb spacer. Does NOT include gaskets or studs/hardware.

  • Open center port
  • Holley 4 barrel carburetors

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

Speedway Motors 5606091 Specifications

MFG. Part #5606091
BrandSpeedway Motors
Carburetor Flange Type4-Barrel Square Bore
Overall Thickness4"
Material TypeAluminum
Carburetor Spacer StyleOpen
Sold in QuantityEach
Overall Length6.50"
Overall Width6.00"
Inside Length4.63"
Bolt Hole PatternInside: 4.26" x 5.60", Outside: 5.18" x 5.60"
Gasket(s) IncludedNo
Hardware IncludedNo