Cold Air Intake for Nissan Altima (1993-1997) 2.4L 4 Cylinder Engine

The KA24DE is a legendary workhorse—tough, torquey, and nearly indestructible. But in the first-generation Altima, this iron-block warrior is muffled by a maze of plastic designed for commuter silence. It’s time to strip away the restriction and let your 2.4L engine breathe the way it was meant to.

Performance Cold Air Intake System for Nissan Altima (KA24DE 2.4L)

If you are driving a 1993–1997 Nissan Altima (U13 chassis), you know that the 2.4L KA24DE under the hood is one of the most reliable 4-cylinder engines Nissan ever produced. Originally sharing DNA with the 240SX and Hardbody trucks, this engine has plenty of low-end torque potential. However, the factory intake system forces air through a restrictive, baffled airbox that strangles air velocity to keep the engine quiet. This results in a "flat" feeling when you step on the gas, especially during highway merging or passing.

This Performance Cold Air Intake System replaces that bulky, aging OEM plastic setup with a mandrel-bent T304 aluminum tube finished in polished chrome. By smoothing out the intake path and removing the factory resonators, the engine can ingest a larger volume of cool, oxygen-dense air with significantly less resistance. The chrome finish paired with the stealthy black high-flow filter instantly cleans up the engine bay, replacing dull, oxidized plastic with a show-quality shine.

The transformation isn't just visual; it's visceral. The smooth aluminum piping increases throttle response, helping the car accelerate more urgently from a stop. Acoustically, the intake wakes up the KA24DE, delivering a deep, throaty induction growl under load that makes the car feel much more alive. It’s the perfect balance of daily reliability and spirited performance.

Why You Need This Upgrade

• Unrestricted Airflow: Replaces the turbulent factory airbox with smooth T304 aluminum piping for maximum air velocity.
• Enhanced Throttle Response: Reduces the intake lag, giving you immediate power delivery when you touch the accelerator.
• Deep Induction Tone: Eliminates factory baffles to unlock the natural, aggressive sound of the 2.4L engine.
• Custom Engine Bay Look: Features a mirror-polished chrome tube and a sleek black filter for a high-performance aesthetic.
• Lifetime Usability: The high-flow filter is washable and reusable, saving you money on disposable paper filters for the life of the car.

Installation Notes

This intake is designed as a direct bolt-on replacement using basic hand tools. Critical Step: You must disconnect the negative battery terminal before beginning the installation and leave it disconnected for a few minutes. This resets the ECU (Engine Control Unit), clearing old fuel trim data and forcing the computer to learn the new airflow parameters immediately. Failure to reset the battery may result in a check engine light or rough idle as the car adapts to the increased air volume.

Replaces These OEM Applications

• 1993-1997 Nissan Altima All Models (2.4L)

Give your KA24DE the airflow it deserves. Ditch the restrictive plastic box for polished chrome performance and a sound that demands attention.