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Ships within 48 hours · Estimated delivery Aug 20 - Aug 25
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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:
- 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
4.4 ★★★★★
Based on 11 reviews
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Product Reviews
★★★★★ 5
Well made & pretty!
Color: Gold
Love it! Great storage options. Easy to access all drawers & side pockets. Looks nice when closed. Kind of an "art deco" look.
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Reviewed in the United States on May 9, 2026
★★★★★ 5
A Treasure Chest of Organization!
Color: White + Gold, Color: White + Gold
Unlock the Treasure Chest of Organization!
If you’ve ever dreamed of a jewelry box that feels like a personal vault for your treasures, the Homde Synthetic Leather Huge Jewelry Box is your answer. From the moment you open its mirrored lid, you’re greeted by a spacious, thoughtfully designed interior that can accommodate an impressive collection from watches, necklaces, rings, earrings, and more. Whether you’re a jewelry enthusiast or simply want to keep your accessories beautifully organized, this box delivers in both style and substance.
Why It Stands Out:
• Generous Size: This isn’t your average jewelry box. It’s huge! You’ll find dedicated compartments for every type of jewelry, so even the most extensive collection fits comfortably. No more tangled necklaces or misplaced rings everything has its place.
• Secure Storage: The included keys let you lock up your valuables with confidence. Whether you’re safeguarding heirlooms or everyday favorites, you’ll appreciate the extra peace of mind.
• Elegant Design: Wrapped in sleek synthetic leather, the box looks stunning on any dresser or vanity. The mirrored lid adds a touch of luxury and makes it easy to check your look as you accessorize.
• Versatile Organization: With specialized slots and drawers for watches, necklaces, rings, and earrings, you’ll spend less time searching and more time enjoying your jewelry.
Final Thoughts:
The Homde Jewelry Box is more than just storage it’s a statement piece that brings order and elegance to your daily routine. If you want a jewelry organizer that’s as impressive as your collection, this is the one to get. Unlock it, fill it, and enjoy the beauty of true organization!
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Reviewed in the United States on January 25, 2026
★★★★★ 4
Lock is useless, but it’s way bigger than my old one and seems better quality (TLDR at bottom)
I’ve had my original jewelry box since early 2015 and I’ve accumulated so much over the years it was so disorganized and overflowing. It wasn’t big enough to hang necklaces, so I used the sides to hang earrings and when I got this new one, had to get the enormous tangles out of all my chains. I wish I had a before picture from before I moved the jewelry to the new one; it was a mess. The first two photos are the old one.
The new one is much bigger, and I’m able to hang my chains and necklaces. I read some reviews before I got it that you have to stuff the pendants in the bottom pockets and they tangle there, but I got around that by hanging them differently so they barely meet the little pocket at the bottom. Some of the areas are a little small; there were still some spots that I dedicated to chokers and these multicolored necklaces that are overflowing in the third drawer, but will probably tangle if I moved them to the big one, but I was able to fit my really long earrings there so that was nice. The little spots in the second drawer are amazing! i have so many pendants with no dedicated chains, so I switch them out a lot, and I had little areas where I could put them all, and where I could put my dangly earrings since there wasn’t a dedicated spot in the earring drawer (first drawer). I do love the earring drawer though, I can also put rings in it if I want. The dividers seem useless in the sense that I probably won’t put anything between them, since when you have to pull them out to take the earrings out anything there would all fall to the bottom. Under the bottom one is fine for small backings. If anyone knows a better way to use the earring drawer I’d love to know (for the dangly ones). I don’t wear watches but the top was great for all my bracelets once I took the watch pillows out; I kept one to use for the beaded stretchy bracelets just because it looks nice. I don’t have a lot of rings, so the top fit all mine, but I want more so I’ll probably have to move some to the earring drawer once I get more.
The only thing I prefer about my old one (besides it came with a travel case you could take in and out, but I hardly used it, and it got stolen anyway) is that the lock actually mattered. All the sides closed around the drawers and buttons, then locked in place with the top, so you couldn’t get in without the key at all. This new one; the lock only locks the top. You can get to all the drawers and sides for necklaces without the key. This isn’t a huge deal for me, since I rarely locked my old box anyway, and it’s not like I have expensive jewelry. But it would be nice for if I was going out of town.
TLDR,
The lock only locks the top, so anything really valuable you’d have to put in there. The sides are great for keeping necklaces and chains untangled. In short, it’s a great box of you need space and love meticulous organization.
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Reviewed in the United States on March 5, 2021
★★★★★ 5
Fantastic jewelry box
Color: White + Gold
Love this jewelry box. It has a lot of space and looks so elegant. Has side flaps for necklaces and a lot of room for rings, etc
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Reviewed in the United States on April 3, 2026
★★★★★ 5
Great product for the price!
Color: White + Gold, Color: White + Gold
Amazing. Great quality. Super sturdy. The color is vibrant and just like it was pictured. Smooth surface. Even comes with 2 littles keys! So cute. No setup, just pull it out of box and load it up! Love all the little drawers helps keeps everything organized. Very stable on top of dresser. Great for price.
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Reviewed in the United States on January 16, 2026
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