Holley Ultra XP 750-CFM 4150 Hard Core Gray Carburetor

Experience 38% pounds worth of weight savings within your vehicle with the powerful Ultra XP hard core gray carburetor by Holley (0-80803HBX)! Running at a CFM of 750, this 4150-style carburetor is the contender high-horsepower engines need. Its mechanical secondaries spring your ride forward from a standstill to the forefront with ease. Plus, the four-corner idle system ensures you’ll have precise control when it comes to tuning. Simply adjust the knurled curb idle screws by hand for the driving experience you’re looking for.

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
- Hard core gray 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

Draining the slosh-free, baffled fuel bowl is hassle-free because of its built-in drain plug and clear side windows. It even has 20% more capacity than the factory version, meaning less gas trips and more time on the road. Balanced airflow and boosted horsepower are a guarantee too, as the carburetor is designed with a contoured venturi inlet. However, the machined accessory hole means you can add on more power via a primary throttle stop. From being made in the USA to 100% wet-flow tested before shipping, this carburetor is a powerhouse you can rely on the moment it arrives.

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