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Nitrous Outlet 4 Cylinder Dual Stage Direct Port System - Two .122 Nitrous Solenoids/Two .177 Fuel Solenoids/Distribution Blocks/Annular Discharge Nozzles (E85)(5-7-10 psi)(50-250HP)(No Bottle)

Marsoni M251S
Sale price$1215.49
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Nitrous Outlet 4 Cylinder Dual Stage Direct Port System - Two .122 Nitrous Solenoids/Two .177 Fuel Solenoids/Distribution Blocks/Annular Discharge Nozzles (E85)(5-7-10 psi)(50-250HP)(No Bottle)Low Fuel Pressure (5 7 10 PSI) Straight Blow Through Nozzle Flow Up To 800HP Four Cylinder Wet System Distribution Blocks Dual 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 nozzle per cylinder capable of flowing 200 HP each. High Quality
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
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4.9 ★★★★★
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4cams
Alexandria, US
★★★★★ 5
OEM recommended.
Style: Mineral, Pattern Name: Quart - 1 Pack
It is the OEM recommended oil for my 2017 9.9 outboard. Arrived quickly and in a sealed plastic bag. No leaks. This is 32 oz and the motor only calls for 27 oz so enough for topping up in needed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 23, 2026
O
Verified Purchase
Ontik Hoque
Charlottesville, US
★★★★★ 5
Great for Mercury 4-stroke outboard
Style: Mineral, Pattern Name: Gallon - 1 Pack
The price was too good to pass; I stocked up on 3 years' worth of oil. QuikSilver is OEM Mercury oil, and this stuff has long shelf life if you can store it in stable indoor temperature/away from temperature extremes. Great buy overall, highly recommended.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 20, 2025
J
Verified Purchase
Joe H.
Birmingham, US
★★★★★ 5
Looks well made
Looks well made. Rubber seems pliable
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 15, 2026
D
Verified Purchase
Dct
Massapequa, US
★★★★★ 5
It’s fixed
That awful boat… don’t buy boats unless you like to spend money OBVIOUSLY! This part fixed the boat!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 18, 2026
D
Verified Purchase
Don R
Phoenix, US
★★★★★ 5
Good
Good quality
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2026

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