500 CFM - 2300 - Shiny - Gasoline
The original Holley 0-4412 has powered thousands of racers to the winners' circle! How do you make it better? Add the proven design elements of the popular Ultra series for more tunability, more durability, more weight savings and more features! The Ultra XP 2bbl carburetors feature all aluminum construction for nearly 50% weight savings over their zinc counterparts, contoured venturii inlet for unobstructed airflow, screw in air bleeds for easy fine tuning, black anodized fully adjustable billet aluminum metering block and baseplate, high capacity fuel bowl which features 20% more fuel capacity to eliminate starvation, integrated fuel shelf to minimize fuel aeration and internal baffling to control fuel slosh and a centered air cleaner flange for improved airflow and performance. Other notable features include wedged floats, knurled hand adjustable curb idle screw and down leg boosters. Ultra XP 2bbl carburetors are approved for use in NASCAR® Mid-West/West Coast Late Model Divisions and utilize the same venturii and throttle bore dimensions of the classic 4412 2bbl carburetor. Available in shiny or Hard Core Gray finishes, the Ultra XP 2bbl will outperform any production 2bbl available.
The original Holley 0-4412 has powered thousands of racers to the winners' circle! How do you make it better? Add the proven design elements of the popular Ultra series for more tunability, more durability, more weight savings and more features! The Ultra XP 2bbl carburetors feature all aluminum construction for nearly 50% weight savings over their zinc counterparts, contoured venturii inlet for unobstructed airflow, screw in air bleeds for easy fine tuning, black anodized fully adjustable billet aluminum metering block and baseplate, high capacity fuel bowl which features 20% more fuel capacity to eliminate starvation, integrated fuel shelf to minimize fuel aeration and internal baffling to control fuel slosh and a centered air cleaner flange for improved airflow and performance. Other notable features include wedged floats, knurled hand adjustable curb idle screw and down leg boosters. Ultra XP 2bbl carburetors are approved for use in NASCAR® Mid-West/West Coast Late Model Divisions and utilize the same venturii and throttle bore dimensions of the classic 4412 2bbl carburetor. Available in shiny or Hard Core Gray finishes, the Ultra XP 2bbl will outperform any production 2bbl available.
- All aluminum construction - for nearly 50% weight savings over zinc version
- Dedicated race-only throttle lever with all unnecessary street attachment points & tangs removed
- Knurled (hand adjustable) curb idle screw allows for easy idle adjustment without the use of tools
- Tumble polished aluminum with Black™ billet aluminum metering block and base plate
- Set screw for wide open throttle stop adjustment
- Wedge float provides fuel control while cornering
- 100% wet-flow tested by Holley technicians to assure it arrives ready to run!
- No choke tower for unobstructed airflow
- Air bleeds moved outward to allow a smoother transition of airflow
- Air cleaner flange centered over venturii for improved airflow and performance. 5/16-18 bent air cleaner stud included
- Down-leg boosters for improved fuel signal
- Fuel bowl provides 20% more fuel capacity while controlling slosh with internal baffling
- Contoured hex head squirter screw for streamlined airflow
- Internal pump passage on metering block equipped with tunable bleed off
- Same 1-3/8” Venturii & 1-11/16” Throttle Bore size and Throttle Plate/Throttle Shaft size of original 0-4412
- Clear sight windows on both sides of bowl for easy & safe fuel level adjustments
- Fuel trough designed into floor of bowl to route fuel flow directly to the jets and assists in keeping jets covered by fuel
- Built in drain plug provides easy access to empty contents of bowl
- -8 (O-ring) inlet threads offer a large variety of plumbing options (come with an extended -8 O-ring to -8AN male adapter and -8 plug). Can be plumbed from either side
- Throttle shaft rides in oil impregnated sintered bronze bushings for smooth throttle actuation
- Throttle shaft capped to prevent entry of debris & contaminates
- 30cc pump with metal lever. Anti-siphon valve in mainbody to reduce pump pull over
Application Summary:
| Year | Make/Model |
|---|---|
| 1960-1965 | Abarth 1600 |
| 1967-1969 | Abarth Simca |
| 1962-1963 | AC Shelby Cobra |
| 1951-1957 | Alfa Romeo 1900 |
| 1946-1952 | Alfa Romeo 6C 2500 |
| 1946-1949 | Allard J1 |
| 1950-1951 | Allard J2 |
| 1952-1954 | Allard J2X |
| 1946-1949 | Allard K1 |
| 1950-1951 | Allard K2 |
| 1952-1954 | Allard K3 |
| 1946-1949 | Allard L |
| 1946-1949 | Allard M |
| 1952-1954 | Allard Monte Carlo |
| 1952-1954 | Allard Safari |
| 1963-1970 | Alpine A110 |
| 1950-1953 | Alvis TA21 |
| 1972-1974 | AM General DJ5 |
| 1960-1974 | American Motors Ambassador |
| 1959 | American Motors American |
| 1963-1968 | American Motors American |
| 1968-1969 | American Motors AMX |
| 1978-1980 | American Motors AMX |
| 1961-1966 | American Motors Classic |
| 1978-1983 | American Motors Concord |
| 1961-1962 | American Motors Custom |
| 1980-1988 | American Motors Eagle |
| 1970-1978 | American Motors Gremlin |
| 1970-1977 | American Motors Hornet |
| 1968-1974 | American Motors Javelin |
| 1965-1967 | American Motors Marlin |
| 1971-1978 | American Motors Matador |
| 1976-1980 | American Motors Pacer |
| 1958-1960 | American Motors Rambler |
| 1969 | American Motors Rambler |
| 1961 | American Motors Rebel |
| 1966-1970 | American Motors Rebel |
| 1966 | American Motors Rogue |
| 1979-1983 | American Motors Spirit |
| 1962-1965 | Apollo GT |
| 1969-1974 | Audi 100 Series |
| 1973-1974 | Audi Fox |
| 1969-1972 | Audi Super 90 |
| 1975-1978 | Bentley Corniche |
| 1975-1976 | Bentley T1 Series |
| 1977-1978 | Bentley T2 Series |
| 1973-1974 | BMW 2002 |
| 1961-1963 | BMW 2600 |
| 1961-1963 | BMW 3200 |
| 1952-1960 | BMW 501 |
| 1954-1955 | BMW 501A |
| 1954-1955 | BMW 501B |
| 1954-1961 | BMW 502 |
| 1958-1961 | Borgward Isabella |
| 1975-1976 | Bricklin SV-1 |
| 1973-1975 | Buick Apollo |
| 1973 | Buick Centurion |
| 1973-1986 | Buick Century |
| 1942 | Buick Century Series 60 |
| 1977 | Buick Electra |
| 1985 | Buick Electra |
| 1959-1964 | Buick Estate Wagon |
| 1970 | Buick Estate Wagon |
| 1970-1972 | Buick GS |
| 1968-1969 | Buick GS 350 |
| 1959-1974 | Buick LeSabre |
| 1976-1985 | Buick LeSabre |
| 1935 | Buick Limited Series 90 |
| 1942 | Buick Limited Series 90 |
| 1976-1979 | Buick Opel |
| 1973-1987 | Buick Regal |
| 1950-1951 | Buick Roadmaster |
| 1942 | Buick Roadmaster Series 70 |
| 1946-1949 | Buick Roadmaster Series 70 |
| Attributes | |
| ASIN | B00Q7OXN3O |
| Barrel | Two |
| Barrel Quantity | 2 |
| Barrels | 2, 2 |
| Billet Color | Shiny with Black Billet, Shiny with Black Billet |
| Body Color | Polished |
| Body Finish | Polished |
| Booster | Down Leg, Downleg |
| Booster Type | Down Leg |
| Brand | Holley, Holley |
| California Proposition 65 | WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov |
| Carburetor Material | Aluminum |
| Carburetor Type | 2300 |
| Carburetor Use | Performance and Race, Performance and Race |
| Category | Air and Fuel Delivery |
| CFM | 500, 500 |
| Choke | None, None |
| Choke Type | None, None |
| Condition | New, New |
| Country of Origin (Primary) | US |
| Cubic Feet Per Minute Rating | 500, 500 |
| Emission | Without EGR |
| Emission Code | 3, 3, Off Road |
| Finish | Shiny, Shiny |
| Flange | 2bbl/2300 |
| Flange Type | 2300 2-BBL, 2300 2-BBL |
| Fuel | Gasoline, Gasoline |
| Fuel Inlet | Dual, Dual |
| Fuel Type | Gasoline |
| Grade Type | Performance, Performance |
| Harmonized Tariff Code (Schedule B) | 8409915085 |
| Hazardous Material Code | N |
| Life Cycle Status Code | Available to Order |
| Linkage Attached | Yes, Yes |
| Marine Approved | No, No |
| Marine Use | No, No |
| Material | Aluminum, Aluminum |
| Model | 2300, 2300 |
| Mounting Hole Quantity | 4, 4 |
| NAFTA Preference Criterion Code | B |
| part type | Carburetor, Carburetor |
| Primary Jet Diameter | 74, 74 |
| Primary Main Jet | 74, 74 |
| Primary Power Valve | 3.5, 3.5 |
| Primary Pump Nozzle Size | 28, 28 |
| Product Type | Carburetor, Carburetor |
| Sale Category | Carburetors and Components |
| SDR Required Flag | N |
| Secondaries | None, None |
| Secondary Type | None |
| Spacer Included | No, No |
| Sub Category | Carburetion, Carburetion |
| Supercharged Application | No, No |
| Throttle Bore | 1.688 in., 1.688 inch |
| Throttle Bore (in.) | 1.688 |
| Type | Automotive |
| Usage | Racing |
| Venturii Size | 1.376 in., 1.376 inch |
| Venturii Size (in.) | 1.376 |
| Warning | California Proposition 65, California Proposition 65 |
| Warranty | Limited 90 Day, Manufacturer's Limited 90 Day Warranty |
| GTIN | 00090127713341 |