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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 |
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
4.7 ★★★★★
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★★★★★ 5
Tremendously helpful for a restful nights sleep!
Flavor Name: Unflavored, Size: 90 Count (Pack of 2)
Jarrow is our go to brand for health supplements. Magmind is amazing - helps tremendously well for restful sleep. Even helps calm my wife's restless legs at night.
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Reviewed in the United States on April 9, 2026
★★★★★ 5
Exceptional Brain Health Supplement – Highly Recommended!
Flavor Name: Unflavored, Size: 90 Count (Pack of 1)
Jarrow Formulas MagMind Brain Health with Magtein** is an outstanding dietary supplement that delivers on its promises. I’m delighted to give it a five-star review for its effectiveness, quality, and support for cognitive health.
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Reviewed in the United States on August 19, 2024
★★★★★ 5
A MAJOR shift for Mg supplements! No side effects and got off ReMag. Best product for me in years!
Flavor Name: Unflavored, Size: 90 Count (Pack of 1)
The big issue with magnesium: we need it, yet for most of us it causes intolerable side effects.
ReMag:
I started on ReMag (a liquid Mg) years ago. Dr. Dean's book sold me on taking Mg and it's helped. I did try a Mg pill supplement then and sure enough, major abdominal pain. But with ReMag I was able to get off of Rx anti acid reflux medication. Her ReMag liquid worked great without pain. BUT it ended up being more inconvenient than I would ever have realized. It's hard to remember to slowly dose throughout the day (I had timers going) and you can't carry a drink to some places. Even worse, if I missed it, got too much at once, or didn't get enough in EVERY day, my body would let me know in bad ways.
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Finally Jarrow solved this and I can take magnesium pills without the huge inconveniences mentioned. I decided to try it out and was able to smoothly transfer over to Jarrow without much issue. And absolutely NO side effects like the typical abdominal pain of other products.
I cannot recommend this product enough if you're looking for a magnesium supplement without side effects or like me you use ReMag but can't stand the the high maintenance of it.
It is helpful to know that if your body is magnesium depleted, starting on Mg may cause weird side effects like an anxiety attack. It's not the fault of the Mg product, it's due to having too little Mg for too long and the body needs time to adjust to getting it. Vitamin D is the same way. And being on anti acid reflux medication results in low Mg & D.
Dr. Dean's book thankfully explains all this.
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Reviewed in the United States on March 4, 2025
★★★★★ 5
Great quality for price
Flavor Name: Unflavored, Size: 90 Count (Pack of 2)
Great value for the quantity and quality. Easy to swallow, no issues.
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Reviewed in the United States on April 6, 2026
★★★★★ 5
Boosted Energy & Great Quality Cinnamon Supplement! ✨💪
Size: 60 Count (Pack of 1)
I’ve been taking these Ceylon Cinnamon Capsules for a few weeks now, and I’m honestly impressed with the results. I’ve noticed better energy levels throughout the day, less fatigue, and overall I just feel healthier. The capsules are easy to swallow, have no bad aftertaste, and the quality feels premium. I also like that they’re made with true Ceylon cinnamon, which is known to be a cleaner and safer option compared to regular cinnamon supplements. Great for supporting metabolism and daily wellness. Definitely a product I’ll continue using and highly recommend!” ✨💪
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Reviewed in the United States on May 18, 2026