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Vehicle Info NeededALLSTAR PERFORMANCEPART NUMBER: 049-ALL25981
Hi-Flow Carburetor Spacer Open
$3999
Ships on 11/03/2026
Lowest Price Guarantee
4150 Series
- Hi-Flow Carburetor Spacer
- Open
- Thickness: 1"
- 4150 Series
Emissions Note:
This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
- Spacers isolate carburetor from manifold, preventing horsepower-robbing heat transfer while also increasing air flow due to the increase in distance from the bottom of the carburetor to the manifold plenum. Spacers are precision CNC-machined in the U.S. from a state-of-the-art polymer compound and can withstand temperatures up to 400°F. Available in open or four hole versions for popular 4150 and 4500 Holley style carburetors in 1/2", 1" and 2" thicknesses. Four hole spacers are additionally offered with specially contoured holes which helps increase air velocity under the carburetor.
Part TypeCarburetor Spacer
Product LineAllstar Performance Hi-Flow Carburetor Spacers
BrandALLSTAR PERFORMANCE
Package Height3.8
Package Width6.7
Package Length7.1
Weight1.01 PG
Part CategoryPerformance Parts
Thickness1 in (25.4 mm)
Gaskets IncludedNo
Carburetor Spacer FinishBlack
Carburetor Spacer StyleOpen
QuantitySold individually
Mounting Hardware IncludedNo
Part FitmentSemi Universal
Carburetor Spacer MaterialPhenolic plastic
Vendor Part NumberALL25981
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
