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#42580804
Holley 0-80804HB Ultra XP Gas 4 Barrel Carburetor, 850 CFM
$1,258.95
/each
Factory Shipped
$1,399.95
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Product Summary
Universal Fit, 4-Barrel Carburetor Barrels, 850 CFM CFM
Rebates Available
See rebate detailsKey Specs
| Carburetor Barrels | 4-Barrel |
| Fuel Type | Gasoline |
| Choke Type | No Choke |
| CFM Range | 800-899 CFM |
| CFM | 850 CFM |
Need To Know
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855.313.9176Quick and Easy Returns
Return PolicyHolley 0-80804HBX Details
Holley 0-80804HBX Details
Holley HP™ four barrel Carburetors have been the standard in racing carburetors for nearly two decades. So how do you make them better? You make them 38% lighter, increase the fuel capacity by 20% and add 30 other new features! They're available in an all–new Hard Core Gray™ hard coat anodized finish with Black™ billet for superior corrosion protection.
(LINK)
Note: Fuel inlets are spaced 9.75" on center which will require a lengthened fuel line / fuel log arrangement. Fuel bowl inlets feature -8 AN O-ring port fittings to allow for a large variety of plumbing options. Fuel bowl can be plumbed from either side.
- Aluminum Construction
- Saves 4.5 lbs - 38%
- Billet Aluminum Metering Blocks
- Fully adjustable (emulsion bleeds, power valve channel restrictors and idle feed restrictors)
- Power valve channel restrictors now machined lower in metering block for improved fuel delivery to power valve circuit
- Billet Aluminum Base Plates
- Stainless steel adjustable secondary link
- Provides choice of 1:1 or progressive secondary throttle actuation for ultimate control of secondary opening rate
- All New Fuel Bowl Design
- 20% more fuel capacity vs. a traditional v-bowl eliminates fuel starvation and provides consistent air/fuel ratios
- Updated Main Body Design
- Integrated idle bypass valve eliminates the need for holes in throttle plates and allows for proper adjustment of idle while maintaining correct throttle plate to transfer slot relationship
- Helps maintain good idle control when using radical camshafts
- Aluminum Construction
- Saves 4.5 lbs - 38%
- Billet Aluminum Metering Blocks
- Fully adjustable (emulsion bleeds, power valve channel restrictors and idle feed restrictors)
- Power valve channel restrictors now machined lower in metering block for improved fuel delivery to power valve circuit
- Billet Aluminum Base Plates
- Stainless steel adjustable secondary link
- Provides choice of 1:1 or progressive secondary throttle actuation for ultimate control of secondary opening rate
- All New Fuel Bowl Design
- 20% more fuel capacity vs. a traditional v-bowl eliminates fuel starvation and provides consistent air/fuel ratios
- Updated Main Body Design
- Integrated idle bypass valve eliminates the need for holes in throttle plates and allows for proper adjustment of idle while maintaining correct throttle plate to transfer slot relationship
- Helps maintain good idle control when using radical camshafts
Charts
Rebates
Holley October Promo 10% Off Select Parts Sale
Holley's October Promo 10% Off Select Parts Sale, running from September 28, 2026, through November 1, 2026. For a limited time, customers can save up to 10% off on select Holley parts, making it the perfect opportunity to upgrade your ride with premium Holley branded parts including Holley, Brawler, Quick Fuel, Leg Wheels, Rev Wheels, Rocket Racing, Flowtech, Edge, Racequip, Apr and Dinan. Purchases must be made between September 28, 2026, through November 1, 2026. This limited-time offer applies to qualifying Holley branded parts purchased during the promotional period. Following the promotion, these parts will revert back to standard pricing.
Guides & Documents
CARB Warning
For race/ off road use or for use on pre-1966 vehicles.
CARB Warning
For race/ off road use or for use on pre-1966 vehicles.
Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.
CA WARNING:
Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov
Holley 0-80804HBX Specifications
Holley 0-80804HBX Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | 0-80804HBX |
| Brand | Holley |
| Carburetor Barrels | 4-Barrel |
| Fuel Type | Gasoline |
| Choke Type | No Choke |
| CFM Range | 800-899 CFM |
| CFM | 850 CFM |
| Carburetor Flange Type | 4-Barrel Square Bore |
| Finish | Satin |
| Material Type | Aluminum |
| Color | Black |
| Secondary Type | Mechanical |
| Fuel Inlet Type | Dual |
| Gasket(s) Included | No |
| New or Remanufactured | New |
| Throttle Linkage Type | Universal |
| Supercharged Application | No |
| GENERAL | |
| Bolt Hole Pattern | 5.160" x 5.625" |
| GTIN Code | 090127671023 |
| Sold in Quantity | Each |
Ratings & Reviews
Ratings & Reviews
Questions & Answers
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