Holley Aluminum Ultra XP Carburetors 0-80803BKX Carburetors, XP, 750 cfm, 4-barrel, Square Bore and Dominator Mounting, Mechanical Secondaries, Dual Inlet, Shiny and Black Finish, Each
Holley Aluminum Ultra XP Carburetors 0-80803BKX Carburetors, XP, 750 cfm, 4-barrel, Square Bore and Dominator Mounting, Mechanical Secondaries, Dual Inlet, Shiny and Black Finish, Each
A$2,940.32
LOW STOCK! Est Ship 4-7 days.
In stock at 2 locations
(more than 10 available)
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Description
Carburetor - Ultra XP - Model 4150 - 4-Barrel - 750 CFM - Square Bore - No Choke - Mechanical Secondary - Dual Inlet - Aluminum - Black Anodized / Tumble Polished - Each
Data: v2 - Desc: v4.2 - Upd: 2026-11-08 02:17:16
Features
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Specifications
Reference Information
| Reference Data (Provide these details to our support team) | |
|---|---|
| Brand Name/s | Holley, Hilborn, Holley Efi, Retrobright, Terminator X |
| StreetFX SKU | hly0-80803BKX |
| SFX Item ID | 4784298 |
| Accounting SKU | hly-0-80803BKX |
| Manufacturer SKU | 0-80803BKX |
| Manufacturer UPC | 090127713433 |
| Alternative References | 0-80803BKX, HLY-0-80803BKX, HOL0-80803BKX |
Carburetors, Ultra XP, 750 cfm, 4-barrel, Square Bore and Dominator Mounting, Mechanical Secondaries, Dual Inlet, Shiny and Black Finish, Each
Holley's Ultra XP carburetors are up to 38 percent lighter than their traditional carbs, offer 20 percent greater fuel capacity, and include a host of other features. One of the main perks is an integrated idle bypass valve that allows for idle adjustments while maintaining the proper throttle-plate-to-transfer-slot relationship. You'll also get all-aluminum construction, fully tunable billet metering blocks, billet base plate, adjustable secondary linkage, and knurled (hand-adjustable) curb idle screws. Enjoy the ultimate in square-bore race carbs; order the Ultra XP carburetor with options best suited for your race application!
Some of the many other features include:
• Your choice of several finishes and CFM ratings (from 600 to 950)
• Contoured Venturi inlet offers balanced airflow for increased hp
• Dual accelerator pumps provide the perfect amount of fuel, from idle to full-throttle
• Clear sight windows on both sides of bowls for safe and easy fuel level adjustments
• -8 AN (O-ringed) inlet threads offer a large variety of plumbing options from either side
• Mechanical secondaries for perfect off-the-line launches
• 100-percent wet-flow tested by Holley technicians
| Product Attributes | |
|---|---|
| Brand | Holley |
| Manufacturer's Part Number | 0-80803BKX |
| Part Type | Carburetors |
| Product Line | Holley Aluminum Ultra XP Carburetors |
| UPC | 090127713433 |
| CFM | 750 |
| Fuel Category | Gasoline |
| Remanufactured | No |
| Number of Barrels | 4 |
| Carburetor Flange | Square bore/Dominator |
| Choke | None |
| Secondary Type | Mechanical |
| Fuel Inlet | Dual |
| Primary Jet Size | 76 |
| Primary Power Valve (Hg) | 6.5 Hg |
| Primary Discharge Nozzle Size (in.) | 0.031 in. |
| Secondary Jet Size | 76 |
| Primary Outer Air Bleed Sizes Included | 73 |
| Primary Inner Air Bleed Sizes Included | 36 |
| Secondary Discharge Nozzle Size (in.) | 0.031 in. |
| Secondary Power Valve | 6.5 |
| Secondary Outer Air Bleed Sizes Included | 73 |
| Secondary Inner Air Bleed Sizes Included | 36 |
| Carburetor Color | Tumble polished |
| Ford Kickdown | No |
| Booster Type | Down-leg |
| Throttle Linkage Type | Universal |
| Carburetor Height (in.) | 3.250 in. |
| Quantity | Sold individually. |
| Notes | Billet aluminum black anodized metering blocks. -8AN O-ringed inlet threads. Come standard with -8AN o-ring to -6AN male adapter and -8AN plug. Can be plumbed from either side. |
| Special Attention | Holley Ultra XP race carburetors are for race applications only and are not designed or suggested for street use. Ultra XP carburetors do not provide attachment points for street transmissions, vacuum outlets or stock throttle linkage and cables. |
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