SKU: 81757141560

750CFM Ultra XP Carburetor - 0-80803RDX

Sale price$584.98 Regular price$649.98
Save 10%

Pay in installments of $162.50 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 10 - Aug 15

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

750CFM Ultra XP Carburetor - 0-80803RDXOverview: Xtreme Performance Holley Ultra XP carburetors! Ultra XP carbs are up to 38% lighter than our traditional race carbs, have fuel capacity that is 20% greater and 30 other new features! They're available in our all new Hard Core Gray hard coat anodized finish with Black billet for improved corrosion protection. They're also available in natural tumble polished aluminum with your choice of Black or Red metering blocks and base plate. The

Overview:

Xtreme Performance - Holley Ultra XP™ carburetors! Ultra XP carbs are up to 38% lighter than our traditional race carbs, have fuel capacity that is 20% greater and 30 other new features! They're available in our all-new Hard Core Gray™ hard coat anodized finish with Black™ billet for improved corrosion protection. They're also available in natural tumble-polished aluminum with your choice of Black™ or Red™ metering blocks and base plate. The Aluminum Ultra XP comes in 600, 650, 750, 850, and True 950-CFM. Holley Ultra XP carburetors offer new features such as an integrated idle bypass valve that allows for idle adjustments while maintaining the correct throttle plate to transfer slot relationship, high capacity fuel bowls which feature 20% more fuel capacity to eliminate starvation, integrated fuel shelf to minimize fuel aeration and internal baffling to control fuel slosh. Other features include all aluminum construction, fully tunable billet metering blocks, billet base plate, adjustable secondary linkage and knurled (hand adjustable) curb idle screws. Holley Ultra XP carburetors are the ultimate in square bore race carburetors!
 

Features:

  • Aluminum Construction (saves 4.5 lbs - 38% weight savings)
  • Shiny with red anodized billet aluminum metering blocks and base plate
  • Designed for use on Drag race, circle track, or any high horsepower engines
  • Contoured venturri inlet offers balanced airflow for increased horsepower
  • Air bleeds moved outward to allow a smoother transition of airflow from the top of the carburetor into the venturii
  • Metering blocks feature improved durability, true gasket sealing and fully adjustable (emulsion bleeds, power valve channel restrictors & idle feed restrictors)
  • 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.
  • Dual 30cc accelerator pumps provide the perfect amount of fuel from idle to full throttle
  • Fuel bowls provide 20% more fuel capacity while controlling slosh with internal baffling
  • Clear sight windows on both sides of bowls for easy and safe fuel level adjustments
  • Built in drain plug in front center of bowl provides easy access to empty contents of bowl
  • 8AN (o-ringed) inlet threads offer a large variety of plumbing options and can be plumbed from either side
  • 4 corner idle allows you to precisely control your idle system
  • Mechanical Secondaries for perfect off the line launches
  • Elongated (dual pattern) mounting holes allow fitment on intakes with square flange (Holley 4150™ style) or large flange (Holley Dominator® style)
  • Knurled (hand adjustable) primary and secondary curb idle screws allow for easy idle adjustment without the use of tools
  • Primary throttle shaft capped to prevent entry of debris & contaminates
  • Factory machined accessory mounting hole for easy addition of adjustable primary throttle stop. New secondary pump cam lever designed to provide positive throttle stop on secondary side
  • Stainless steel adjustable secondary link. Provides choice of 1:1 or progressivesecondary throttle actuation for ultimate control of secondary opening rate
  • Baseplate designed with a boss that can be consumer machined for vacuum source
  • Includes notched float and jet extensions
  • 100% wet-flow tested by Holley technicians to assure it arrives ready to run!

 

Application:

Year Make Model Submodel Engine Size
Universal

 

Specs:

Barrels 4
Billet Color Shiny with Red Billet
Booster Down Leg
Brand Holley
Carburetor Use Professional Race
CFM 750
Choke None
Circuit 2
Condition New
Emission Code 3
Finish Shiny
Fuel Gasoline
Fuel Inlet Dual
Marine Use No
Material Aluminum
Model 4150
Primary Main Jet 76
Primary Power Valve 6.5
Primary Pump Nozzle Size 32
Product Type Ultra XP Carburetor
Secondaries Mechanical
Secondary Main Jet 76
Secondary Pump Nozzle Size 32
Supercharged Application No
Throttle Bore 1.688 inch
Venturii Size 1.376 inch
Warning California Proposition 65
Warranty Limited 90 Day
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: 81757141560

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.4 ★★★★★
Based on 29 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
H
Verified Purchase
H.
New York, US
★★★★★ 5
Attractive
Size: 6 Panel
Smells nice, looks nice. Used for screening light in my room and as background for online meetings.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 30, 2023
N
Verified Purchase
Nita
Fort Morgan, US
★★★★★ 1
Garbage!!!
Size: 6 Panel
The description of this item claims it is a room divider for patio privacy. The problem is that a little gust of wind and down it goes. Ther's not much privacy when it's always on the floor. This poor design needs some braces on the bottom to give it some stability and keep it from blowing over. Mine came damaged and the seller wanted me to pay $80 to have it shipped back to them despite uploading pictures of the broken hinge it came with. Take my advice, keep looking and don't settle for this one!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 28, 2022
A
Verified Purchase
Anna
Draper, US
★★★★★ 5
Stylish, Sturdy Shelves That Instantly Upgrade Any Bathroom
Size: 15.7", Color: Rustic Brown, Size: 15.7", Color: Rustic Brown
Beautiful, sturdy, and easy-to-install shelves that instantly make the bathroom look more organized and stylish. These floating shelves completely transformed the look of my bathroom. The wood color is rich and warm, and once installed, the shelves look much more expensive than they actually are. They add both decoration and practical storage without taking up extra space. Installation was straightforward, and everything aligned well. Once mounted, the shelves feel very sturdy. The toilet paper holder is especially useful, and the storage box has enough space for two rolls plus small decor pieces. The shelves also have great weight capacity. I added decor, candles, and a picture frame, and everything sits securely. They really elevate the room, giving it a cleaner and more put-together appearance. The set arrives packed well, and the finish has no scratches or flaws. For bathrooms, entryways, or small spaces, this set is an excellent choice. It’s functional, stylish, and adds instant charm to the room.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 12, 2025
N
Verified Purchase
Nonniebugg
Cuba, US
★★★★★ 5
would buy again
Size: 15.7", Color: Rustic Brown
I was very pleased with the look and quality. Easy installation and fits perfectly over the toilet. Uncluttered the area nicely.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 4, 2026
D
Verified Purchase
Dani
Draper, US
★★★★★ 5
Good Quality for the Price
Size: 15.7", Color: Black
Surprisingly good quality for shelves made of particle board. They look nice and hold quite a bit of weight when installed properly. I ordered another shorter set of floating shelves from another seller on Amazon. Those shelves were of especially horrible quality when compared to these.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 20, 2025

recommand products