The Holley 0-4412 is a stock-replacement 2-barrel carburetor built for street applications and mandated by some oval-track racing sanctioning bodies. It's a proven, winning choice for circle track racing and a reliable upgrade for a tired factory 2BBL.
Specifications:
- CFM: 500
- Model: 2300
- Flange Type: 2300 2-BBL
- Finish: Shiny (vibratory polished)
- Carburetor Material: Aluminum
- Carburetor Use: Street
- Choke Type: Manual (cable driven)
- Fuel Type: Gasoline
- Fuel Inlet: Single
- Booster Design: Downleg
- Secondaries: None
- Primary Main Jet: 73
- Primary Power Valve: 5.0
- Primary Pump Nozzle Size: 28
- Accelerator Pump: 50cc
- Throttle Bore: 1.688 inch
- Venturi Size: 1.376 inch
- Vacuum Ports: 1 timed (spark), 1 full, 1 PCV
- Power Valve Blow-Out Protection: Yes
- Warranty: Manufacturer's Limited 90 Day Warranty
- Part Number: 0-4412S
Compatible with GM, Chrysler, and Ford automatic-transmission kickdown linkage (additional parts may be required).
FAQ
What CFM rating is this carburetor?
500 CFM.
Is this carburetor a direct stock replacement?
Yes — it's designed as a stock replacement for 2-barrel street applications and is also mandated for some oval-track racing sanctioning bodies.
What transmissions is it compatible with?
It works with GM, Chrysler, and Ford automatic-transmission kickdown linkage; additional parts may be required depending on the application.
What size is the accelerator pump?
50cc, for additional fuel delivery under initial acceleration.

