The Holley 0-4412, a legendary force that has propelled numerous racers to victory, is now elevated to new heights! Infused with the proven design elements from the acclaimed Ultra series, this Ultra XP 2bbl carburetor offers unmatched tunability, durability, weight savings, and features. Crafted with all-aluminum construction, it achieves nearly 50% weight reduction compared to its zinc counterparts.
Key Features:
- Hard Core Gray finish with Black™ billet aluminum metering block and base plate
- No choke tower for unobstructed airflow
- Outwardly moved air bleeds for a smoother transition of airflow
- Air cleaner flange centered over venturii for enhanced airflow and performance. Includes a 5/16-18 bent air cleaner stud
- 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 provides 20% more fuel capacity while controlling slosh with internal baffling
- Clear sight windows on both sides of the bowl for easy and safe fuel level adjustments
- Fuel trough designed into the floor of the bowl to direct fuel flow directly to the jets and assists in keeping jets covered by fuel
- Built-in drain plug for easy access to empty the bowl's contents
- -8 (O-ring) inlet threads offer a wide variety of plumbing options, with an extended -8 O-ring to -8AN male adapter and -8 plug included. Can be plumbed from either side
- Throttle shaft rides in oil-impregnated sintered bronze bushings for smooth throttle actuation
- Capped throttle shaft to prevent entry of debris & contaminants
- 30cc pump with metal lever. Anti-siphon valve in the main body to reduce pump pull-over
- Dedicated race-only throttle lever with all unnecessary street attachment points & tangs removed
- Knurled (hand adjustable) curb idle screw for easy idle adjustment without the use of tools
- Set screw for wide-open throttle stop adjustment
- Wedge float provides fuel control while cornering
- 100% wet-flow tested by Holley technicians to ensure it arrives ready to run!
- Local Pickup Available:
- No
- Local Delivery Available:
- No
- Additional Handling:
- No
