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Vehicle Info NeededALLSTAR PERFORMANCEPART NUMBER: 049-ALL25983
Hi-Flow Carburetor Spacer 4 Hole
$3499
Ships on 11/03/2026
Lowest Price Guarantee
4150 Series
- Hi-Flow Carburetor Spacer
- 4 Hole
- Thickness: 1/2"
- 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 Height2.0
Package Width9.0
Package Length11.0
Weight0.55 PG
Part CategoryPerformance Parts
Thickness0.5 in (12.7 mm)
Gaskets IncludedNo
Carburetor Spacer FinishBlack
Carburetor Spacer Style4-hole
QuantitySold individually
Mounting Hardware IncludedNo
Part FitmentSemi Universal
Carburetor Spacer MaterialPhenolic plastic
Vendor Part NumberALL25983
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
