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Nitrous Outlet 8 Cylinder Dual Stage Direct Port System - Four .122 Nitrous Solenoids/Four .177 Fuel Solenoids/Compact Distribution Blocks/Compression Fittings/90 Degree Discharge Nozzles (Gas)(45-55 psi)(100-400HP)(12lb Bottle)

Marsoni M251S
Sale price$2080.49
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Nitrous Outlet 8 Cylinder Dual Stage Direct Port System - Four .122 Nitrous Solenoids/Four .177 Fuel Solenoids/Compact Distribution Blocks/Compression Fittings/90 Degree Discharge Nozzles (Gas)(45-55 psi)(100-400HP)(12lb Bottle)Flow Up To 800HP Per Stage . 122 Nitrous & . 177 Fuel Solenoids Wet System Dual Stage All Hardware, Fittings and Accessories Included Includes Jetting For 100 200 300 400HP 90 Aluminum Nozzles 45, 55 psi Gas Fuel Jets Included High Horsepower: Nitrous Outlet's 8 cylinder direct port systems are designed to be high flowing for high horsepower applications. This system comes with two wet nozzles per cylinder capable of flowing 200 HP each. Racers
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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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4.9 ★★★★★
Based on 1465 reviews
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Verified Purchase
Scottytoohotty
Bozeman, US
★★★★★ 1
DO NOT BUY THIS GARBAGE
Size: 20-35 HP
DO NOT BUY. Stopped working after 2nd trip total of 2 hours use. Not returnable after 30 days. Could easily ruin your engine. Expensive garbage.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 19, 2026
T
Verified Purchase
Thomas W.
West Palm Beach, 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
Fort Morgan, 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
Los Angeles, 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.
Birmingham, 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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