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- USA
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Ships within 48 hours · Estimated delivery Jul 10 - Jul 15
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Description
Holley Aluminum Ultra XP Carburetor 750cfm # HO0-80803HBXHolley Aluminum Ultra XP Carburetor 750cfm # HO0 80803HBX Carburetors, Ultra XP, 750 cfm, 4 barrel, Square Bore and Dominator Mounting, Mechanical Secondaries, Dual Inlet, Grey and Black Finish, Each 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
Holley Aluminum Ultra XP Carburetor 750cfm # HO0-80803HBXCarburetors, Ultra XP, 750 cfm, 4-barrel, Square Bore and Dominator Mounting, Mechanical Secondaries, Dual Inlet, Grey and Black Finish, Each
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:
Gray anodized
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.
Holley Aluminum Ultra XP Carburetors
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
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.0 ★★★★★
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Product Reviews
★★★★★ 5
Easy to Hang
Color: Black, Size: 3 Pack
This shelf is easy to hang, comes with great anchors and looks perfect. The quality looks nice and is was an easy hanging process compared to other shelves. Worth it for the price.
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Reviewed in the United States on May 18, 2026
★★★★★ 5
One of the best deals available!
Color: White, Size: 2 Pack
Extremely sturdy, good looking and easy to install. I have a couple of dozen feet of assorted lengths in the kitchen, bedroom, living room and foyer. Holding all sorts of antique clocks, audio equipment and cooking stuff from my flours and assorted cornmeals to cases of powdered “lemonade”.
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Reviewed in the United States on April 18, 2026
★★★★★ 3
Mounting system doesn’t align on one of three shelves.
Color: Walnut, Size: 3 Pack
Nice shelves. Install was super easy except on one of the three shelves. The main mounting shelf holes were off so the shelf will not slip onto horizontal mounting poles unless I modify the shelf. So a 20 minute job becomes a two hour job.
The mounting system does appear very sturdy just not aligned.
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Reviewed in the United States on January 4, 2026
★★★★★ 5
Simple, easy, and strong
Size: 16 Inch, Color: White
Kind of on the smaller side but for the price it’s just fine. Easy to install with just a screw driver if you can miss a stud, else you’ll need a drill. Strong enough to hold what a normal person would put on a shelf that size. No worries and it looks great
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Reviewed in the United States on April 22, 2026
★★★★★ 5
Great shelves
Size: 24 Inch, Color: White, Size: 24 Inch, Color: White
Pretty easy to put up. Love the way it looks.
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Reviewed in the United States on April 30, 2026