You need an E85 carburetor, we want to custom build one for you!
You need an E85 carburetor, we want to custom build one for you!
Signed in as:
filler@godaddy.com
From choosing your build to submitting your specs, getting started with Mark Sullens E85 Carburetors is simple.
MSE85 Carburetors builds custom E85 carburetors for drag racing, circle track, street performance, boosted applications and more. Every carburetor is calibrated to the customer's combination, not pulled off a shelf with a one size fits all tune.
For more than 20 years, Mark Sullens has built, tested, tuned, and refined E85 carburetors with his own hands. That hands on experience across countless engine combinations gives him the knowledge to recognize what a setup needs and calibrate each carburetor accordingly.
Every build is backed by real world testing, continued research, and knowledge earned at the track, not just on paper. Mark Sullens E85 Carburetors have helped racers compete and win from local tracks to National and World Championship.
No cookie cutter calibrations. Every MSE85 carburetor is built around your engine, your setup, and your goals, with one on one support from start to finish.

Built for racers chasing more than the finish line. MSE85 Champion Series carburetors deliver precision E85 performance, crisp response, and consistent fuel delivery, custom calibrated for your combination.
Our Champion Series 1050 Dominator are results of satisfied customers, and proven calibrations that have led to numerous track and National Championships.
Built from a Holley Gen 3 Ultra Dominator with custom Mark Sullens E85 calibration for your engine. Includes high volume HP fuel bowls, external linkage and dual 50cc accelerator pumps. Designed for drag racing, Pro Street and high horsepower engines.
You will need to submit a customer engine spec sheet when ordered.
*Custom E85 calibration built to specific requirements
*External linkage
* Main body height increased by 5/16 in. compared to previous generation
* Optimized design for larger radius air to deliver smoother flow into Venturi
* Power valve channel restrictors, are now machined to enhance fuel delivery to the power valve circuit, if required
* Fuel bowls excess material removed for increased fuel capacity
* 20 percent greater fuel capacity compared to traditional V-bowl, eliminating fuel starvation and providing consistent air/fuel ratios.
* Fuel trough designed to route fuel flow directly to the jets and assist in keeping them covered by fuel
* Designed for use on drag race, Pro Street, or any
high-horsepower engines
* Dual 50cc accelerator pumps
Our Champion Series 1250 Dominator are results of satisfied customers, and proven calibrations that have led to numerous track and National Championships.
Our carburetor build starts with a 4500 Holley Gen 3 Ultra Dominator carburetor, featuring a new main body, new state-of-the-art
Mark Sullens E85 calibrations, and high-volume HP fuel bowls.
You will need to submit a customer engine spec sheet when ordered.

This will include 650, 750, 850 ,950 cfm. Built to compete and built to win. MSE85 Winner Series Carburetors deliver strong throttle response, consistent MSE85 fuel delivery, and custom calibration matched to your combination.
You will need to submit a customer engine spec sheet when ordered.
No one size fits all calibration here. Every Mark Sullens E85 Winner Series Carburetor receives a custom MSE85 calibration based on your engine specs, application, and performance requirements.
*Custom E85 calibration built to specific requirements
*External linkage
* Designed radius air entries optimized to deliver smoother flow
* More fuel capacity eliminating fuel starvation and providing consistent air/fuel ratios
* Proper needle and seat to minimize fuel aeration and promote more consistent metering
* Designed for use on drag race, Pro Street, or any high-horsepower engines
From drag racing and circle track to mud trucks, road racing, performance street, Street Outlaws, and boats, Mark Sullens E85 Carburetors have powered combinations across motorsports, including numerous National and World Championship winning programs.

Built for boost and calibrated for your combination. MSE85 Blow Through Carburetors deliver the fuel control and consistency OUR OUTLAW SERIES IS FOR TURBO OR PRO-CHARGED APPLICATIONS.
You will need to submit a customer engine spec sheet when ordered.
Built specifically for your engine combination with custom Mark Sullens E85 calibration and boost referenced power valves designed for high performance boosted applications. Dual needle and seat bowls increase fuel capacity and help prevent fuel starvation, maintaining consistent air fuel ratios when horsepower and boost climb.
*Custom E85 calibration built to specific requirements for optimal performance
*Enhanced external linkage for improved throttle response and control
* Designed for radius air entries optimized to deliver smoother flow
* Specifically designed for drag race, Pro Street, Outlaw Street or any high-horsepower engines
*Special Boost preference power values
*Engineered to meet the demands of high-performance engines running on E85
Enhanced external linkage, optimized radius air entries, and properly sized needle and seats work together for responsive throttle control, smooth airflow, and dependable fuel delivery.

Don’t underestimate the 2 Barrel. Custom MSE85 calibration, crisp throttle response, and consistent fuel delivery built specifically for your racing combination.
The 4412 XP is available for an additional charge.
You will need to submit a customer engine spec sheet when ordered.
Mark Sullens E85 2 Barrel Carburetors bring custom MSE85 calibration and precise fuel delivery to applications where a 2 barrel is required or preferred. Airflow, fuel metering, and calibration are matched to your engine specs and intended use for crisp response and consistent performance.
*Custom E85 calibration built to specific requirements
* Designed air entries optimized to deliver a better flow across the boosters
* Better fuel capacity eliminating fuel starvation and providing consistent air/fuel ratios
* Passes Go/NO Go gauge
*Proper sized needle and seat to minimize fuel aeration and promote more consistent metering
* Designed for anything that requires the use of 2 barrel carburetors, 6 packs included
* CHEATER VERSION AVAILABLE
From circle track to specialized racing applications, each MSE85 2 Barrel is built around your combination. ATM, Quick Fuel, or Holley style carburetors are used depending on application, with XP options available for an additional charge.

Mark Sullens E85 Carburetors also builds custom E85 conversions for drag racing, circle track, street performance, boosted applications and more. Every carburetor is calibrated to the customer's combination, not pulled off a shelf with a one size fits all tune.
Send us your carburetor and we will convert it to Mark Sullens E85 the right way. MSE85 Carburetors conversions are built one at a time, custom calibrated from proven track tested combination, then tailored to your exact setup.
No generic kit guessing. No mass production shortcuts. You get a purpose built E85 calibration, quality parts, and real after sale support from a shop that builds only E85.
You will need to submit a customer engine spec sheet when ordered.
If you purchase an MSE85 Carburetor from a third party, we are happy to perform a refresh and recalibration to ensure it works correctly for your specific application.
But when purchasing through a third party, it's crucial to authenticate the carburetor to be sure that it's a MSE85 product. Buying used can be risky and when issues arise, you don't get what you expected and our reputation could suffer. At MSE85, we prioritize customer satisfaction, even when purchases are made through third party sellers.
Also, be aware that the carburetor may have been modified or adjusted by others and may no longer reflect our original calibration. For this reason, we strongly recommend contacting us before purchasing a used or previously owned carburetor so we can help you determine if it is the correct unit and avoid unnecessary cost or delays.
Already have a carburetor you want to run on E85? Mark Sullens E85 Carburetors conversions go beyond simply changing a few parts. Your carburetor is converted and calibrated for E85 based on the carburetor, engine combination and intended application.
Conversion pricing varies depending on the carburetor and work required.
Final pricing is determined after reviewing your carburetor and build specifications.

Mark Sullens E85 Carburetors also refresh our custom E85 carburetors for drag racing, circle track, street performance, boosted applications and more. Every carburetor is calibrated to the customer's combination, not pulled off a shelf with a one size fits all tune.
At Mark Sullens E85 Carburetors our work does not stop once a carburetor leaves the shop. E85 technology continues to evolve, and our research and development evolve right along with it.
Because of that, we may recommend a Refresh and update every few years to take advantage of improvements developed since your carburetor was originally built.
That being said, if your carburetor is running properly and you are satisfied with its performance, do not send it in. We do not believe in changing something that is already doing exactly what you want it to do.
Refreshes are optional, not automatic. Our goal is performance, consistency, and reliability, not unnecessary changes.
You will need to submit a customer engine spec sheet when ordered.
If you purchase an MSE85 carburetor from a third party, we are happy to perform a refresh and recalibration to ensure it works correctly for your specific application.
But when purchasing through a third party, it's crucial to authenticate the carburetor to be sure that it's a MSE85 product. Buying used can be risky and when issues arise, you don't get what you expected and our reputation could suffer. At MSE85, we prioritize customer satisfaction, even when purchases are made through third party sellers.
Also, be aware that the carburetor may have been modified or adjusted by others and may no longer reflect our original calibration. For this reason, we strongly recommend contacting us before purchasing a used or previously owned carburetor so we can help you determine if it is the correct unit and avoid unnecessary cost or delays.
A refresh is for an existing Mark Sullens E85 Carburetor that needs service, inspection and recalibration to get it back where it belongs. Each carburetor is evaluated individually because wear, condition and replacement parts can vary.
Refresh pricing is based on condition and services required.
Any additional parts or repairs needed will be identified before final pricing.
Mark Sullens E85 Carburetors
Any questions call or text Mark

We use cookies to analyze website traffic and optimize your website experience. By accepting our use of cookies, your data will be aggregated with all other user data.