Description
Holley 650 CFM Ultra XP 4150 Race Carburetor – Hard Core Gray
Engineered for competitive drag racing and track performance, the Holley Ultra XP 650 CFM 4-barrel carburetor combines an ultra-lightweight aluminum body with Hard Core Gray anodising and precision black billet metering components.
Overview & Motorsport Performance
The Holley 0-80802HBX Ultra XP 650 CFM carburetor represents state-of-the-art race carburetion for Model 4150 setups. Constructed entirely from high-grade aluminum, it provides up to a 38% weight savings (saving approximately 4.5 lbs) compared to traditional cast zinc race carburetors. Built specifically for high-horsepower race applications, this unit features high-capacity fuel bowls offering 20% more fuel volume, internal slosh baffling, and an integrated idle bypass valve that maintains proper throttle blade-to-transfer slot geometry under aggressive camshaft setups.
Key Features
- ☑ Lightweight All-Aluminum Body: Saves 4.5 lbs (38% lighter) over conventional zinc-body race carburetors.
- ☑ Hard Core Gray Anodised Finish: Hard-coat anodised main body paired with black billet aluminum metering blocks and base plate for superior corrosion resistance.
- ☑ 650 CFM Mechanical Secondaries: Delivers immediate throttle response and maximum off-the-line launch performance.
- ☑ Integrated Idle Bypass Valve: Allows fine idle tuning on aggressive camshaft profiles without drilling throttle plates.
- ☑ High-Capacity Fuel Bowls: 20% extra fuel capacity with dual sight windows, internal slosh baffles, and central drain plugs.
- ☑ Dual -8AN O-Ring Inlets: Versatile plumbing connections supporting dual-feed fuel delivery setups.
- ☑ 4-Corner Idle System: Precision idle mixture adjustment across all four barrels with hand-adjustable knurled screws.
Technical Specifications
| Brand | Holley |
|---|---|
| Manufacturer Part Number | 0-80802HBX |
| Carburetor Model | Model 4150 Ultra XP (4150UXP) |
| Air Flow Rating | 650 CFM |
| Barrels | 4-Barrel |
| Secondary Control | Mechanical Secondaries |
| Choke | None (Race Calibration) |
| Finish & Color | Hard Core Gray Hard Coat / Black Billet |
| Material | Cast & Billet Aluminum |
| Fuel Inlet Size | -8AN O-Ring Female Threads |
| Booster Type | Down Leg |
| Accelerator Pumps | Dual 30cc Pumps |
| Flange Type | Dual Pattern (Square Bore 4150 & Dominator) |
What’s Included in the Box
- 1 x Holley 650 CFM Ultra XP Race Carburetor (PN 0-80802HBX)
- 1 x Base Flange Mounting Gasket Set
- -8AN O-Ring Inlet Fittings
- Quick-Start Setup & Tuning Guide
As an official UK stockist of Holley performance parts, JP Racing provides genuine competition components backed by expert technical advice and express UK mainland shipping. Upgrade your competition engine with verified Holley Ultra XP technology today.
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