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Description
1050 CFM Gen 3 Marine Ultra Dominator Carburetor - 0-80903HBMOverview: The patent pending GEN 3 mainbody is 5 16" taller than the previous generation! This new height allowed for larger radius air entries which were optimized using Computational Fluid Dynamics (CFD) software to deliver smoother flow into new fully machined, big bore venturii. The main body also features an integrated idle bypass valve that allows for idle adjustments while maintaining the correct throttle plate to transfer slot relationship as
Overview:
The patent pending GEN 3 main–body is 5/16" taller than the previous generation! This new height allowed for larger radius air entries which were optimized using Computational Fluid Dynamics (CFD) software to deliver smoother flow into new fully machined, big bore venturii.
The main-body also features an integrated idle bypass valve that allows for idle adjustments while maintaining the correct throttle plate to transfer slot relationship as well as an extended air cleaner flange for easy air scoop attachment when using the available air scoop adapter.
The Gen 3 utilizes 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, 12-hole billet booster inserts, fully tunable billet metering blocks, adjustable external linkage, throttle position sensor mounting points and knurled (hand adjustable) curb idle screws. Each calibration has been dyno tested to deliver proven performance!
Features:
- All aluminum construction saves 3.8lbs. over original models (28% weight savings)
- Gray anodized finish with black anodized billet aluminum metering block and booster inserts
- Designed for use on Marine high horsepower engines
- Fully machined from venturi throat to throttle bore for predictable & repeatable performance
- Integrated idle bypass valve allows for adjustment of idle while maintaining correct throttle plate to transfer slot relationship
- 12 hole billet booster inserts for superior atomization and crisp throttle response
- Metering blocks feature improved durability, true gasket sealing and fully adjustable (emulsion bleeds, power valve channel restrictors & idle feed restrictors)
- Dual 50cc 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
- 8 (o-ringed) inlet threads offer a large variety of plumbing options and can be plumbed from either side
- Factory ready TPS mounting points for use with data acquisition systems (Holley TPS P/N 534-214 available)
- Knurled (hand adjustable) primary and secondary curb idle screws allow for easy idle adjustment without the use of tools
- Contoured hex head squirter screws for streamlined airflow
- Fully adjustable stainless steel external linkage can be adjusted for 1:1 progressive, or soft progressive throttle activation. No linkage parts under the carburetor
- 100% wet-flow tested by Holley technicians to assure it arrives ready to run!
- J-Style vent tubes
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| Universal |
Specs:
| Barrels | 4 |
|---|---|
| Billet Color | Hard Core Gray with Black |
| Booster | Annular |
| Brand | Holley |
| Carburetor Use | Marine |
| CFM | 1050 |
| Choke | None |
| Circuit | 3 |
| Condition | New |
| Emission Code | 4 |
| Finish | Hard Core Gray |
| Fuel | Gasoline |
| Fuel Inlet | Dual |
| High Speed Air Bleed | 43 |
| Idle Air Bleed Size | 65 |
| Intermediate Air Bleed | 71 |
| Marine Engine Size | Universal |
| Marine Use | Yes |
| Material | Aluminum |
| Model | 4500 |
| Needle and Seat Size | 120;120 |
| Primary Main Jet | 84 |
| Primary Power Valve | 6.5 |
| Primary Pump Nozzle Size | 35 |
| Product Type | Carburetor |
| Secondaries | Mechanical |
| Secondary Main Jet | 84 |
| Secondary Pump Nozzle Size | 35 |
| Supercharged Application | No |
| Throttle Bore | 2.000 inch |
| Venturii Size | 1.690 inch |
| Warning | California Proposition 65 |
| Warranty | Limited 90 Day |
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Exchange/Return Notes
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4.6 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 3
Pages falling out of binding.
Format: Paperback
I love the book. It’s been fun. My issue is the pages are falling out. I received the book today and every other page comes right out of the binding. I am worried I am going to lose pages.
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Reviewed in the United States on June 2, 2026
★★★★★ 4
Great mystery concept, poor paper quality
Format: Paperback
Love the concept and the book but the quality of the paper and cover just really disappoints me. Because you have to flip back and forth you’re going to be handling this a lot. I had the book at the pool and the edge got wet and the cover just delaminated and came apart.
I have really enjoyed the complexity of this mystery and cannot wait to find out who the killer is!
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Reviewed in the United States on May 30, 2026
★★★★★ 5
Perfect for Mystery Lovers and Overthinkers
Format: Paperback, Format: Paperback
I picked this up thinking it would be a quick little puzzle book and ended up way more invested than I expected. The entire concept is basically solving a murder mystery through elimination clues, and it honestly feels like a mix between Clue, logic puzzles, and a detective game you can do by yourself.
Each page gives you clues about who the killer is NOT, so you slowly narrow down the suspects by crossing out names based on things like syllables, vowels, letters in their name, etc. Some clues are super straightforward and others make you stop and really think. It’s surprisingly addicting once you get into it.
What I like most is that it actually keeps your brain busy for a long time. This is not one of those puzzle books you finish in an hour and forget about. I’ve been working through it slowly because there are SO many pages and clues. It’s honestly kind of funny how serious I got trying to figure it out.
The layout is easy to follow, the concept is original, and it’s a great option if you like mystery games, logic puzzles, escape rooms, or anything detective-related. I could also see this being really fun to bring on a trip or keep around for downtime instead of scrolling on your phone.
Definitely worth it if you enjoy interactive mystery books and want something different from the usual word searches or crossword puzzles.
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Reviewed in the United States on May 12, 2026
★★★★★ 5
Better Than the Movie
Format: Hardcover, Format: Hardcover
I picked up Remarkably Bright Creatures after hearing so much buzz about it, and it absolutely lived up to the hype. This is one of those rare books that is heartfelt, funny, emotional, and completely unique all at the same time. The characters feel real and layered, and the story unfolds in such a thoughtful, satisfying way.
Marcellus the octopus completely steals the show. I didn’t expect to become so attached to an octopus, but his chapters were easily my favorite part of the book. They added humor, wisdom, and so much heart to the story.
If you’ve already seen the movie adaptation but haven’t read the book yet, you absolutely should. The book goes so much deeper emotionally and gives so much more background and connection between the characters. I enjoyed the movie, but the book made me care about the story on a completely different level.
The writing is approachable and easy to get into, but it still leaves a lasting impact. This would make a great book club pick or gift for anyone who enjoys character-driven stories with warmth and emotional depth.
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Reviewed in the United States on May 25, 2026
★★★★★ 5
Great story and characters
Format: Kindle
I had to see what all the hype was about and after seeing the trailer on Netflix I knew I had to read the book before I watched the movie. I have to say, this was one of the better books I've read so far this year. It's not a fast paced read but it held my interest the entire time. The characters are very well developed and I really grew to like Tova and Cameron, of course Marcellus is the star of the show and is as witty as they come. If you're looking for a good read I highly recommend this one. The octopus is a difficult creature to care for so I sincerely hope the "octopus tank craze" doesn't start over this like the "clownfish tank craze" did when Finding Nemo came out. Leave it to the expert level saltwater hobbyist to care for them or better yet, leave them in the ocean. I have to mention too that this is the author's debut novel and for a debut novel it's very impressive, I'll look for others from her in the future.
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Reviewed in the United States on May 25, 2026