The original Holley 0-4412 has propelled countless racers to victory, and now it gets even better with the incorporation of proven design elements from the popular Ultra series. The Ultra XP 2bbl carburetors offer enhanced tunability, increased durability, significant weight savings, and additional features. Constructed entirely from aluminum, they boast nearly 50% weight savings compared to their zinc counterparts.
Key Features:
- Tumble-polished aluminum with a Black™ billet aluminum metering block and baseplate
- No choke tower for unobstructed airflow
- Outwardly moved air bleeds for smoother airflow transition
- Centered air cleaner flange for improved airflow and performance (5/16-18 bent air cleaner stud included)
- Down-leg boosters for improved fuel signal
- Contoured hex head squirter screw for streamlined airflow
- Internal pump passage on metering block equipped with tunable bleed-off
- Maintains the same 1-3/8” Venturii & 1-11/16” Throttle Bore size and Throttle Plate/Throttle Shaft size as the original 0-4412
- Fuel bowl with 20% more capacity, internal baffling to control slosh, and clear sight windows for easy fuel level adjustments
- Fuel trough in the bowl floor directs fuel flow to the jets and helps keep jets covered by fuel
- Built-in drain plug for easy bowl emptying
- -8 (O-ring) inlet threads with an extended -8 O-ring to -8AN male adapter and -8 plug
- Throttle shaft rides in oil-impregnated sintered bronze bushings for smooth throttle actuation
- Throttle shaft capped to prevent entry of debris and contaminants
- 30cc pump with metal lever, anti-siphon valve in the main body to reduce pump pull-over
- Dedicated race-only throttle lever with unnecessary street attachment points and tangs removed
- Knurled (hand adjustable) curb idle screw for easy idle adjustment without tools
- Set screw for wide-open throttle stop adjustment
- Wedge float for fuel control while cornering
- 100% wet-flow tested by Holley technicians to ensure it arrives ready to run!
Specifications:
- Barrels: 2
- Billet Color: Shiny with Black Billet
- Booster: Down Leg
- Brand: Holley
- Carburetor Use: Performance and Race
- CFM: 500
- Choke: None
- Condition: New
- Emission Code: 3
- Finish: Shiny
- Fuel: Gasoline
- Fuel Inlet: Dual
- Marine Use: No
- Material: Aluminum
- Model: 2300
- Primary Main Jet: 74
- Primary Power Valve: 3.5
- Primary Pump Nozzle Size: 28
- Product Type: Carburetor
- Secondaries: None
- Supercharged Application: No
- Throttle Bore: 1.688 inch
- Venturii Size: 1.376 inch
- Warranty: Limited 90 Day
- Local Pickup Available:
- No
- Local Delivery Available:
- No
- Additional Handling:
- No
