SKU: 90810683537

Holley Aluminum Ultra XP Carburetor 750cfm # HO0-80803HBX

Sale price$978.75 Regular price$1087.50
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 9 - Jul 14

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

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 # HO0-80803HBX
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 (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:
  1. 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
SKU: 90810683537

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.5 ★★★★★
Based on 2134 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
M
Verified Purchase
Mr Friedman
Chelsea, US
★★★★★ 5
Beautiful and comfortable
Size: 12 Wide, Color: Black
Beautiful and comfortable
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
D
Verified Purchase
DeeDee
Houston, US
★★★★★ 5
Really nice
Size: 10.5 Wide, Color: Black
My husband loves these shoes. He has a flat food and said they still fit nice.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026
B
Verified Purchase
Brian Diez
Los Angeles, US
★★★★★ 4
Good Quality
Size: 11, Color: White
Nice looking shoe. Slides on easy. My only feedback would be I wish the toe box was a bit wider and the heel a bit higher. It's a good shoe overall. I would buy again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 10, 2025
C
Verified Purchase
carl mazaleski
Chelsea, US
★★★★★ 5
Fit
Size: 11.5 Wide, Color: Cognac
Comfortable and affordable
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026
T
Verified Purchase
The Product Connoisseur
Lexington, US
★★★★★ 3
Classy pair that look great but don’t last
Size: 12, Color: Black, Size: 12, Color: Black
Great shoe. Slip on is easy and the shoes are comfortable and classy. Ten months later and the bottom has holes and didn’t last.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 30, 2025

recommand products