Cold Air Intake for Nissan Altima (2013-2018) SV S SL SR 2.5L 4 Cylinder Engine

Stop letting your L33’s performance suffocate behind a restrictive plastic box and experience the crisp induction sound and throttle response your sedan actually deserves.

Performance Cold Air Intake System for Nissan Altima (L33) 2.5L QR25DE

If you have spent any time on the Nissan forums, you know the factory intake on the 2013-2018 Altima is designed for one thing: being quiet. Unfortunately, that silence comes at the cost of air velocity. The stock air box utilizes a narrow inlet and a thick paper filter that creates significant turbulence, forcing your QR25DE to work harder just to breathe during hard acceleration. It’s a classic bottleneck that holds back the natural power curve of the 2.5L inline-four.

This Cold Air Intake system is the definitive fix for that "sluggish" feeling off the line. By replacing the baffled factory assembly with a high-flow mandrel-bent tube and a reusable performance filter, you are smoothing out the induction tract. This allows the engine to ingest a higher volume of oxygen-rich air, resulting in a more efficient combustion cycle. This isn't just about peak numbers; it’s about improving the "driveability" and eliminating the laggy response often felt in the L33 chassis.

Because the 2013-2018 Altima shares a consistent architecture across the S, SV, SL, and SR trims, this kit provides a factory-style fitment without the factory-style restriction. You get a deeper, more aggressive engine note under load, a cleaner look under the hood, and the peace of mind that comes with a component designed to exceed OEM airflow parameters.

Why You Need This Upgrade

• Instant Throttle Response: Eliminates the "bog" found in the factory air box for immediate power delivery.
• Increased Power Output: Provides a measurable gain in both horsepower and torque by optimizing air-to-fuel ratios.
• Enriched Induction Sound: Delivers a deep, throaty tone during wide-open throttle without being obnoxious at cruising speeds.
• Lifetime Efficiency: Features a washable and reusable filter, ending the cycle of buying disposable paper filters.
• Sporty Aesthetic: Replaces drab black plastic with a performance-oriented look that cleans up the engine bay.

Installation Notes

This kit is designed to be a "bolt-on" upgrade using basic hand tools like screwdrivers and a socket set. While most enthusiasts can complete the swap in under an hour by following air box removal guides, professional installation is highly recommended to ensure all clamps are seated properly. Pro Tip: Disconnect your battery terminal for a few minutes during the install. This forces the ECU to reset and "re-learn" the new, increased airflow data upon the first startup.

Replaces These OEM Applications & Part Numbers

• 2013 Nissan Altima SV S SL SR 2.5L
• 2014 Nissan Altima SV S SL SR 2.5L
• 2015 Nissan Altima SV S SL SR 2.5L
• 2016 Nissan Altima SV S SL SR 2.5L
• 2017 Nissan Altima SV S SL SR 2.5L
• 2018 Nissan Altima SV S SL SR 2.5L

OEM-Replacement-Kit-2.5-L33

Ditch the restrictive factory baffles and give your Altima the breathing room it needs to perform at its peak.