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Nitrous Outlet 10 Cylinder Direct Port System - Two .122 Nitrous Solenoid/Two .310 Fuel Solenoid/Two Dual Passage Injection Rail/90 Degree Discharge Nozzles (E85)(45-55 psi)(125-375HP)(12lb Bottle)

Marsoni M251S
Sale price$1773.99
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Nitrous Outlet 10 Cylinder Direct Port System - Two .122 Nitrous Solenoid/Two .310 Fuel Solenoid/Two Dual Passage Injection Rail/90 Degree Discharge Nozzles (E85)(45-55 psi)(125-375HP)(12lb Bottle)Flow Up To 400HP Ten Cylinder Wet System Dual Untapped Injection Rails Single Stage 90 Aluminum Nozzles Fuel Jetting For 45 55 PSI All Hardware, Fittings, and Accessories Included Includes Jetting For 125 250 375HP High Horsepower: Nitrous Outlet's 10 cylinder direct port systems are designed to be high flowing for high horsepower applications. This system comes with one nozzle per cylinder capable of flowing 200 horsepower each. High Quality
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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4.3 ★★★★★
Based on 2467 reviews
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Thomas W.
Battle Creek, US
★★★★★ 5
Looks very good quality to me.
Size: 85-300 HP
Everything looks good quality to me. I find it odd that the people leaving bad reviews with pictures of broken and melted impeller, when you can clearly see the brass on the inside is brown and dirty like old pennies and mine is shiny new. It's almost like the took the pictures of the ones they replaced to get a refund and a free repair kit.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
K
Verified Purchase
Kris W Cayton
Alexandria, US
★★★★★ 5
Great quality and price
Perfect fit. Received quicker than boat shop
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 22, 2025
R
Verified Purchase
Roger
Cuba, 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.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2025
M
Verified Purchase
Mike M.
Lowell, US
★★★★★ 4
Very good shipped and received fast
Missing one bottom gasket. Maybe factor made changes from old style
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 10, 2021
D
Verified Purchase
DW
Omaha, US
★★★★★ 5
Good impeller kit
Great kit for impeller alpha one gen two outdrive. The only thing that was missing is the instructions as a reference.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 14, 2025

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