Holley Ultra XP 750-CFM 4150 Carburetor

For a carburetor that weighs 38% less than stock, get your powerhouse the Ultra XP carburetor from Holley (0-80803BKX)! With the mechanical secondaries of this 750-CFM carb, you’ll effortlessly catapult your vehicle from a stand-still to the front of the line. Its four-corner idle ensures stable control while the knurled curb idle screws make tuning as easy as twisting it with your hands.

Features and Benefits:
- Ultra XP 4150 carburetor running at 750-CFM for high-horsepower engines
- Lightweight aluminum construction saves 38% of weight or 4-1/2 lbs
- Shiny finish with black anodized billet metering blocks and base plate
- Baffled fuel bowls prevent sloshing while adding 20% fuel capacity
- Contoured venturi inlet increases horsepower by balancing airflow
- Outward air bleeds smoothen airflow transition from top of carb to venturi
- Integrated idle bypass valve eliminates throttle plate holes
- Dual 30cc accelerator pumps
- Clear sight windows for easy fuel level checking
- Built-in drain plug offers quick access to bowl
- Variable use 8AN O-ringed inlet threads
- 4-corner idle allows for precise control
- Mechanical secondaries make for perfect launches from zero
- Elongated dual pattern mounting holes
- Knurled primary/secondary curb idle screws are adjustable without tools
- Capped primary throttle shaft keeps debris out
- Stainless secondary link, adjustable for 1:1 or progressive secondary throttle actuation
- Machined accessory hole for addition of primary throttle stop
- Includes notched float and jet extensions
- Wet-flow tested before shipping
- Made in the USA

The carburetor is made in the USA from aluminum and bears a gleaming, shiny finish, ensuring a quality construction and clean look at the same time. Draining it is easy, as the slosh-free and baffled fuel bowl has a built-in drain plug and clear windows on the sides. Plus, it has 20% more capacity compared to the original, saving you gas station trips. As for balancing airflow, it utilizes a contoured venturi inlet which simultaneously bolsters horsepower. If it’s not enough power though, the machined accessory hole lets you add on a primary throttle stop. It’s 100% wet-flow tested by Holley techs prior to shipping, welcoming you to use it once it’s in your hands!  

Vehicle Fitment:
- 1965-1985 Ford Mustang
- 1966-1977 Ford Bronco
- 1948-1979 Ford F-100
- 1960-1987 Chevy C10