CARBURETOR SPACERS
Holley 4500 Series Dominator Carb Spacers Some kits include mounting studs and nuts. Refer to manufacturer data for application-specific details.
With Hardware and Gaskets
Part No.
Height
Bore Dia.
Material Type
Notes
Allstar Performance ALL25990 1/2"
Open Open Open
Thermoplastic Thermoplastic Thermoplastic Thermoplastic Thermoplastic Thermoplastic Thermoplastic Thermoplastic
— — — — — — — — — — —
No No No No No No No No No No No
ALL25991 ALL25992 ALL25993 ALL25994 ALL25995 ALL25996 ALL25997 CAN85-202 CAN85-200 CAN85-210
1" 2"
1/2"
2.030" 2.030" 2.030"
1" 2" 1" 2"
ALL25990
2.030" Taper 2.030" Taper
Canton
1/2"
Open Open
Phenolic Phenolic Phenolic
1" 1"
2.000"
Dart Machinery DRT62100006
1"
Open
Phenolic
Cloverleaf Design
No
Edelbrock EDE8717
1" 1"
Open Open
Aluminum Aluminum
—
Yes Yes
EDE8718
Cloverleaf
High-Velocity Heads HVHSS4500-1P 1" HVHSS4500-1.1P 1" HVHSS4500-1AL 1" HVHSS4500-2P 2" HVHSS4500-2AL 2" HVHSS4500-2.1P 2" HVHSS4500-CAL 1" HVHSS4500-1CP 1"
2.000" Taper
Black Thermoplastic Black Thermoplastic
Drag Race Only Drag Race Only
No No No No No No No No No No No No
2.125"
— — —
Aluminum
—
Black Thermoplastic
Drag Race Only
Aluminum
—
1250 CFM Carbs Drag Race Only
2.125" Tapered
Black Thermoplastic
EDE8718
Tapered/Cloverleaf Tapered/Cloverleaf
Aluminum
Black Thermoplastic
—
Moroso
MOR64947 MOR64951 MOR65016 MOR65017
1/2"
Open Open Open
Phenolic
— — — —
1"
Billet Aluminum
1/2" 1/2"
Wood Fiber Laminate Wood Fiber Laminate
2.000"
Trans Dapt TRA3215
2"
Taper
Billet Aluminum
—
Yes
Wilson Manifolds WLS024110
1"
Taper Taper
Billet Aluminum Billet Aluminum
— — —
No No No
WLS024130 WLS020010
1.5"
Hard Coat Aluminum Lightweight Hard Coat Aluminum Lightweight
HVHSS4500-1P
1"
Open
WLS020050
2"
Open
—
No
High-Performance “Super Sucker” Carburetor Spacers
Spacers increase throttle response, improve carb signal, and insulate the carburetor from the manifold. Available in aluminum or insulative plastic (drag racing only). For Holley 4150 and 4500 Dominator carburetors.
589 2021-22 ENGINE BUILDER CATALOG
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