Nissan's VQ35DE earned a spot on Ward's 10 Best Engines list for years — but the factory intake on the 2002-2006 Altima and Maxima was engineered for dealership silence, not airflow. The restrictive plastic airbox, convoluted intake snorkel, and dense paper filter choke the 3.5L V6 before air reaches the throttle body, leaving the engine feeling lazy below 3,500 RPM and muted at wide-open throttle.

The FLASHARK Cold Air Intake Kit replaces the entire factory intake tract with a mandrel-bent aluminum intake tube, a high-flow dry cone filter, and all necessary couplers and hardware. On a near-stock VQ35DE, expect 5-10 wheel horsepower with the most noticeable improvement in throttle response — the engine wakes up where the factory intake holds it back. No ECU tune required; the factory MAF-based management adapts via fuel trim learning.

Installation is a straightforward bolt-on — 45-90 minutes with basic hand tools, no cutting or permanent modifications. The dry filter is fully washable and reusable, and the black powder-coated finish on the intake tube resists corrosion and heat while blending cleanly with the engine bay. Compatible with all 2002-2006 Altima and Maxima 3.5L trims (S, SE, SL, SE-R).

Key Features

Mandrel-Bent Aluminum Intake Tube — 6061 aluminum with black powder-coated finish. A larger internal diameter and a smooth bend profile eliminate turbulence in the factory plastic airbox, improving airflow velocity across the VQ35DE's powerband.

High-Flow Dry Cone Filter — No oil required. Captures 95%+ of airborne particles without the MAF contamination risk of oiled filters. Fully washable and reusable — every 15,000 miles or annually.

Sharper Throttle Response — The VQ35DE already makes strong mid-range torque. This intake removes the factory restriction that dulls pedal feel below 3,500 RPM, making the car feel more responsive in daily driving and more eager at wide-open throttle.

Bolt-On Installation — Reuses factory MAF sensor, PCV, and IAT provisions. All couplers, clamps, brackets, and hardware included. 45-90 minutes with basic hand tools — no cutting, drilling, or permanent modifications.

Factory ECU Compatible — Designed for the VQ35DE's MAF-based engine management. The OEM ECU detects increased airflow and adjusts fuel trim automatically — no reflash or piggyback tuner required for basic installation.

Dual-Platform Coverage — Engineered for both the 2002-2006 Altima 3.5L (L31) and 2002-2006 Maxima 3.5L (A34). The same intake tube and filter configuration works on both platforms despite minor differences in engine bay layout.

Specifications

Brand: FLASHARK
SKU: FLIS25042
Material: 6061 Aluminum tubing
Tubing Finish: Black powder-coated
Tube Diameter: 3.0" (76mm)
Filter Type: Dry (no oil required)
Filter Media: Cotton gauze
Filter Style: Cone
Filter Color: Red
Installation: Bolt-on, 45-90 minutes
Tuning Required: No
Warranty: 1 Year

Package Includes

1x Black powder-coated 6061 aluminum mandrel-bent intake tube
1x Red dry cotton gauze cone air filter
1x Silicone coupler 
3x Stainless steel hose clamps
1x Vacuum hose and fittings
1x Mounting bracket and hardware kit
1x Installation guide