Air Intake for Infiniti I35 (2002-2004) 3.5L Engine

Sharper Throttle Response and Induction Sound for the Infiniti I35 VQ35DE

Who It’s For: Designed specifically for 2002-2004 Infiniti I35 owners looking to maximize the efficiency of the legendary VQ35DE engine.

The Problem: The factory intake system on the VQ35DE is heavily muffled and restrictive. To meet consumer noise standards, Infiniti utilized a baffled air box and thick paper filters that create significant air turbulence. This results in a "lazy" throttle feel and prevents the engine from reaching its full volumetric efficiency, especially in the higher RPM range where this V6 is designed to shine.

The Solution: This Air Intake Kit replaces the bulky, restrictive factory housing with a high-flow, washable cotton media filter and a lightweight aluminum adapter. By streamlining the path of oxygen to the throttle body, we reduce pumping losses and allow the VQ35DE to breathe freely, resulting in a more aggressive induction note and improved mid-range pull.

Why This is the Ultimate Upgrade

• Optimized Airflow: By eliminating the factory baffles and corrugated tubing, this kit provides a more direct path for cool air to enter the combustion chamber.
• Lifetime Filtration: Features a high-performance cotton air filter that is fully washable and reusable, saving you money over the life of the vehicle compared to disposable OEM paper filters.
• Enthusiast Sound Profile: Beyond the power gains, you’ll notice a much deeper, throaty engine tone under heavy acceleration that the stock air box purposely hides.

Technical Specifications

Compatibility & OEM Reference

Fits the Following Vehicles:

• 2002 Infiniti I35 Base Sedan 4-Door 3.5L V6
• 2003 Infiniti I35 Base Sedan 4-Door 3.5L V6
• 2004 Infiniti I35 Base Sedan 4-Door 3.5L V6

Interchange Part Numbers:

AIK-I35-0204-VQ35, 3.5-V6-INF-I35-INTAKE

The Performance Promise

Buy with confidence. As specialists in the VQ platform, we know that these engines crave air. This kit is a direct bolt-on that requires only basic hand tools and about 60 minutes of your time. We recommend disconnecting your battery during the install to allow the ECU to recalibrate for the increased airflow upon the first startup.

Common Questions

Will this air intake kit fit my 2002-2004 Infiniti I35?
Yes, this kit is a direct bolt-on fit for all 2002, 2003, and 2004 Infiniti I35 4-door sedans equipped with the 3.5L VQ35DE V6 engine.

What engine is this intake kit built for?
This intake kit is engineered specifically for the 2002-2004 Infiniti I35 with the 3.5L VQ35DE V6 engine rated at 255 HP and 246 lb-ft of torque.

What components are included in the box?
The kit includes a washable high-flow cotton media air filter, a lightweight aluminum adapter, and a mounting clamp.

Is the air filter washable and reusable?
Yes, the included high-performance cotton media filter is fully washable and reusable, eliminating the need for disposable paper filters.

How long does installation take and what tools are needed?
Installation takes about 60 minutes using basic hand tools. Disconnecting the battery during installation is recommended so the ECU can recalibrate for the increased airflow on first startup.