Phenolic Carb Spacer 1/2" 300-4000

Part # 300-4000QFT Be the first to write a review

Open style

Estimated Ship Date: 06/19/2026

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Emissions

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

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Designed for drag race applications only. Features include 1/2" open style phenolic spacer with longer mounting studs. Features include 1/2" open style phenolic spacer with longer mounting studs.

Features:

Helps isolate heat from motor to carburetor

About Quick Fuel Technology

Looking for carburetors and carburetor parts for drag racing and street rods? Shop on Holley.com, the official site for QFT products.

Brand	Quick Fuel Technology
Carburetor Type	Performance
Category	Air and Fuel Delivery
Emission Code	5
Flange Style	4150
Grade Type	Performance
Material	Phenolic
Mounting Hole Quantity	4
Part Type	Carburetor Spacer
Product Type	Carburetor Spacer
Spacer Finish	Black
Sub Category	Hardware, Fasteners and Fittings
Thickness	1/2"
Warranty	Manufacturer's Limited 90 Day Warranty
UPC	849804007019
Part Number	300-4000QFT

Manufacturer's Limited 90 Day Warranty: See Details

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*Free Shipping and Handling only offered to the contiguous US on orders over $149, excludes clearance parts and oversized packages.

Some parts are not legal for use in California or other states with similar regulations.