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Nitrous Outlet 4 Cylinder Direct Port System - .122 Nitrous Solenoids/.177 Fuel Solenoids/Dual Passage Injection Rail/90 Degree Discharge Nozzles (E85)(45-55 psi)(50-250HP)(15lb Bottle)

Marsoni M251S
Sale price$737.50
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Nitrous Outlet 4 Cylinder Direct Port System - .122 Nitrous Solenoids/.177 Fuel Solenoids/Dual Passage Injection Rail/90 Degree Discharge Nozzles (E85)(45-55 psi)(50-250HP)(15lb Bottle)High Fuel Pressure (45 55 PSI) Flow Up To 400HP Four Cylinder Wet System Single Untapped Injection Rail Single Stage All Hardware, Fittings and Accessories Included Includes Jetting For 50 100 150 200 250HP High Horsepower: Nitrous Outlet's 4 cylinder direct port systems are designed to be high flowing for high horsepower applications. This system comes with one wet nozzle per cylinder capable of flowing 200 HP each. High Quality Construction: Nitrous
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
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4.9 ★★★★★
Based on 350 reviews
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Donivan d.
Carnegie, US
★★★★★ 5
Good
Works great!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 5, 2024
A
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Amazon Customer
Alexandria, US
★★★★★ 1
Cheap
Cheaply made
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Reviewed in the United States on December 30, 2025
K
Verified Purchase
Kris W Cayton
Carnegie, US
★★★★★ 5
Great quality and price
Perfect fit. Received quicker than boat shop
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Reviewed in the United States on June 22, 2025
R
Verified Purchase
Roger
Pawtucket, US
★★★★★ 5
Easy to install if you watch some online how to videos.
The water pump kit worked great on my 35 year old, 2 stroke, 100hp, Mercury Outboard.
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Reviewed in the United States on May 15, 2025
M
Verified Purchase
Mike M.
New York, US
★★★★★ 4
Very good shipped and received fast
Missing one bottom gasket. Maybe factor made changes from old style
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Reviewed in the United States on July 10, 2021

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