Will this intake require a tune for my Altima?

No, this Injen cold air intake is designed to work with your vehicle's factory ECU. It maintains safe air/fuel ratios and does not require a custom tune for installation.

What is the CARB EO number for this intake?

The CARB Executive Order number for this Injen RD Series cold air intake is D-476-5. This certification applies to 2002-2004 model year Nissan Altimas with the 2.5L engine.

How do I maintain the Injen air filter?

The SuperNano-Web dry air filter included with this intake is serviceable. You can clean it using a dedicated Injen filter cleaning kit or a mild soap and water solution, then allow it to air dry completely before reinstalling.

Injen 02-06 Altima 4 Cyl. 2.5L (CARB 02-04 Only) Polished Cold Air Intake

1 / 3

Specifications

Brand: Injen
Part #: RD1975P
UPC: 843115005870

Injen 02-06 Altima 4 Cyl. 2.5L (CARB 02-04 Only) Polished Cold Air Intake

Name: Injen 02-06 Altima 4 Cyl. 2.5L (CARB 02-04 Only) Polished Cold Air Intake
Brand: Injen
Price: 424.74 USD
Availability: InStock

$424.74

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 2002-2006 Nissan Altima 4 Cyl. 2.5L. This Injen polished cold air intake adds horsepower and an aggressive engine tone.

Key Features

Fits 2002-2006 Nissan Altima 4 Cyl. 2.5L.
Smooth, mandrel-bent 6061-T6 aluminum tubing improves airflow.
Dyno-proven gains of up to 6.4 HP and 7 lb-ft. of torque.
Maintains safe air/fuel ratios without additional tuning.
Includes a fully serviceable Injen SuperNano-Web dry air filter.
Polished finish for a custom engine bay appearance.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

Secure CheckoutFast Shipping631-982-0042

Fits this vehicle

Nissan Altima 2002-2006

Product Details

This Injen RD Series cold air intake is made specifically for your 2002-2006 Nissan Altima with the 2.5L 4-cylinder engine. It's designed to pull cooler, denser air from outside the engine bay, which helps your engine burn fuel more efficiently and make more power. You'll notice an improved throttle response and a more aggressive sound when you step on the gas.

The intake tube is constructed from 6061-T6 aluminum and is mandrel-bent to ensure a smooth, uninterrupted path for airflow, reducing restrictions compared to the stock intake. It includes a serviceable Injen SuperNano-Web dry air filter that offers a large surface area for maximum airflow and good filtration. This kit is CARB certified for 2002-2004 models (EO #: D-476-5), meaning it meets emissions standards in California and other states that follow its regulations. The polished finish gives your engine bay a clean, custom look.

Installation is straightforward, and you can expect noticeable gains in horsepower and torque without needing to retune your engine. The kit comes with all the necessary hardware and instructions for installation, and it's backed by Injen's limited lifetime warranty.