The factory intake on the 2007–2012 Nissan Altima 2.5L was designed for a very specific goal: silence. Between the resonator chambers, baffled airbox, and restrictive panel filter, the QR25DE engine is breathing through a maze before air ever reaches the throttle body. It works fine for commuting — but if you've ever felt the throttle lag when merging onto the highway, you know the stock system leaves power on the table.

Flashark's cold air intake kit replaces the entire factory airbox assembly with a smooth, mandrel-bent aluminum intake tube and a high-flow dry cone filter. The result is a noticeably sharper throttle response from a stop, faster mid-range pickup, and an intake tone that finally lets the 2.5L four-cylinder be heard. On an otherwise stock QR25DE, realistic gains are 3–7 WHP with improved driveability — the kind of difference you feel every time you press the gas, not just on a dyno sheet.

Installation is bolt-on, with no cutting, no permanent modifications, and no special tools required. The included heat shield keeps the filter out of direct engine bay heat, and the dry filter requires no oiling — just periodic cleaning with compressed air. It's a practical, honest upgrade for the daily-driven Altima that delivers better response and sound in a car you already drive every day.

Key Features

QR25DE-specific design – Engineered for the 2.5L inline-4 engine (QR25DE) in 2007–2012 Nissan Altima (L32 generation); not compatible with 3.5L V6 (VQ35DE) models

Mandrel-bent aluminum intake tube – Black powder-coated finish resists corrosion and engine bay heat; smooth internal bends maintain consistent airflow velocity

High-flow dry cone filter – Oil-free design eliminates MAF sensor contamination risk; red filter element is washable and reusable with compressed air — no oiling kit needed

Heat shield included – Shields the filter from direct radiant engine heat; helps maintain cooler intake air temperatures compared to an open-element setup

3–7 WHP on stock QR25DE – Honest gains on an otherwise stock engine; throttle response improvement is the real upgrade, especially from a stop and at part-throttle

Bolt-on, no fabrication – Reuses factory mounting points; all couplers, clamps, and hardware included — no cutting, no drilling, no permanent changes

Inline-4 induction sound – Unlocks a deeper, more aggressive intake note under acceleration without being intrusive at cruise

45–75 minute DIY install – Straightforward job with basic hand tools (socket set, screwdrivers); suitable for first-time installers

Specifications

Brand: Flashark
SKU: FLIS25132
Type: Cold Air Intake Kit
Pipe Material: Aluminum 
Pipe Finish: Black powder-coated
Filter Type: Dry (oil-free, reusable)
Filter Color: Red
Heat Shield: Included
Intake Diameter: 3.0 inch (76mm)
Installation: Bolt-on, no cutting or permanent modifications required

Package Includes

1x Black powder-coated aluminum mandrel-bent intake tube
1x High-flow dry cone air filter (red)
1x Heat shield assembly with mounting bracket
1x Set of silicone couplers
1x Set of stainless steel hose clamps
1x Set of mounting hardware (bolts, nuts, washers)
1x Installation guide