★★★★★ 5
Very good filter
Size: CA12290-Premium
Very good filter
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 3, 2025
Nitrous Outlet 4 Cylinder Direct Port System - .122 Nitrous Solenoid/.177 Fuel Solenoid/Distribution Blocks/Annular Degree Discharge Nozzles (Gas)(5-7-10 psi)(50-250HP)(10lb Bottle)
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Nitrous Outlet 4 Cylinder Direct Port System - .122 Nitrous Solenoid/.177 Fuel Solenoid/Distribution Blocks/Annular Degree Discharge Nozzles (Gas)(5-7-10 psi)(50-250HP)(10lb Bottle)Low Fuel Pressure (5 7 10 PSI) Straight Blow Through Nozzle Flow Up To 400HP Four Cylinder Wet System Distribution Blocks 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 SBT wet nozzle per cylinder capable of flowing 200 HP each. High Quality
Quick Dispatch:
Your Nitrous Outlet 4 Cylinder Direct Port System - .122 Nitrous Solenoid/.177 Fuel Solenoid/Distribution Blocks/Annular Degree Discharge Nozzles (Gas)(5-7-10 psi)(50-250HP)(10lb Bottle) orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
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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 1586 reviews
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Product Reviews
★★★★★ 3
Not 99.9 %
Size: CA12290-Premium
Only 98% efficient. Says 99.9 in the ad. There is a huge difference between those two efficiencies.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 8, 2026
★★★★★ 5
Accord
Size: CA12290-Premium, Size: CA12290-Premium
Fit was perfect on 2018 accord, delivery fast and packaging intact.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 18, 2025
★★★★★ 5
Prefect fit
Size: CA12290-Premium, Size: CA12290-Premium
Excellent product! OEM Replacement. If you are buying for horse power gains. You will not really notice any difference
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 18, 2025
★★★★★ 5
K and N is the best
Size: CA12290-Premium
In my opinion, you can’t buy a better air filter. Been buying them for all my cars since the 1990s.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 8, 2024
