Description
Part Number: 0-80845HBX
Holley Ultra XP 950 CFM E85 Aluminum Carburetor
The Holley Ultra XP 950 CFM race carburetor (0-80845HBX) delivers unmatched E85 performance, featuring lightweight aluminum construction, Hard Core Gray anodised body, and precision billet metering components.
Key Features
- ☑ Calibrated specifically for E85 ethanol racing fuels straight out of the box
- ☑ All-aluminum construction provides 38% weight savings (4.5 lbs lighter than standard cast carbs)
- ☑ Durable Hard Core Gray hard-coat anodised finish with black anodised billet metering blocks
- ☑ Integrated idle bypass valve allows idle speed tuning without altering throttle plate-to-transfer slot geometry
- ☑ High-capacity fuel bowls with internal baffling, sight glass windows, and -8AN O-ring inlet threads
- ☑ Mechanical secondaries (Double Pumper) with dual 30cc accelerator pumps for immediate throttle response
- ☑ Dual pattern mounting flange accommodates both standard 4150 square bore and 4500 Dominator intake manifolds
Technical Specifications
| Brand | Holley |
|---|---|
| Manufacturer Part Number | 0-80845HBX |
| Carburetor Model | 4150 Ultra XP |
| CFM Rating | 950 CFM |
| Fuel Type | E85 Ethanol |
| Number of Barrels | 4-Barrel |
| Secondary Type | Mechanical |
| Finish / Color | Hard Core Gray Body with Black Billet Components |
| Flange Type | Square Bore 4150 / 4500 Dual Pattern |
| Needle & Seat Size | .130″ Stainless Steel |
| Fuel Inlet Thread | -8AN O-Ring |
| Accelerator Pumps | Dual 30cc |
What’s Included in the Box
- Holley Ultra XP 950 CFM E85 Carburetor (PN 0-80845HBX)
- Base Plate Mounting Gasket & Base Hardware
- Carburetor Air Cleaner Gasket
Engineered for hardcore drag racing and circuit competition, Holley Ultra XP carburetors represent the peak of mechanical fuel delivery engineering. As an authorised UK supplier, JP Racing provides genuine Holley motorsport hardware backed by expert technical advice and fast UK dispatch.




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