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Vehicle Info NeededMR GASKETPART NUMBER: 720-3405
Phenolic Carb Spacer Square Flange - Open
$6049
Ships on 11/09/2026
Lowest Price Guarantee
1'' Spacers
- Phenolic Carb Spacer
- Square Flange - Open
- 1'' Thick
- Advanced Phenolic Thermoset Plastic
- Withstands Extreme High Temperatures
- Insulates/Reduces Heat Flow
- Allows Denser Fuel Mix
- Produces More Horsepower
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
- Manufactured from advanced phenolic thermoset plastic and engineered to withstand extreme high intake manifold temperatures, these spacers insulate and reduce heat flow to the carburetor, keeping it cooler to allow a denser fuel mixture to enter the engine and produce more horsepower. Available to fit the standard Holley/Carter and Quadrajet 4-barrel bolt pattern in your choice of open center or 4-hole straight bore design. Complete with gaskets, studs, nuts, and washers. A must for any serious racing enthusiast.
Part TypeCarburetor Spacer
Product LineMr. Gasket Phenolic Carb Spacer
BrandMR GASKET
Package Height1.2
Package Width6.3
Package Length6.5
Weight1.0 PG
Part CategoryPerformance Parts
Carburetor TypeHolley
Carburetor Spacer StyleOpen
ColorBlack
QuantitySold individually
Mounting Hardware IncludedYes
MaterialPhenolic
Carb TypeCarter AFB
Carburetor Spacer MaterialPhenolic plastic
Thickness1 in (25.4 mm)
Gaskets IncludedYes
Carburetor Spacer FinishBlack
Part FitmentSemi Universal
Vendor Part Number3405
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
