Product Specifications
2013-2018 Nissan Altima 2.5L QR25DE Cold Air Intake
Give your 2013-2018 Nissan Altima 2.5L QR25DE a freer-breathing aluminum intake path where the factory airbox and plastic intake tract used to be. This Flashark cold air intake is built as a direct bolt-on for S, SV, SL, and SR four-cylinder Altimas — including the 2017 Altima SR — pairing mandrel-bent, powder-coated aluminum tubing with a washable dry cone filter to sharpen throttle response, strengthen mid-range pull, and bring out an induction note the factory airbox keeps muted. All mounting hardware is included, and the install takes about 60–90 minutes with basic hand tools.
By moving filtration out of the restrictive factory airbox, the intake is designed to feed the engine cooler outside air, with the changes you notice most arriving as crisper throttle response, a stronger 2,500–5,000 RPM pull where daily driving happens, and a deeper intake tone under acceleration. No cutting, no welding, no fabrication — just a socket set, an afternoon window, and a cleaner-looking engine bay.
Specifications
| Spec | Detail |
|---|---|
| Brand | Flashark |
| Type / Style | Cold Air Intake |
| Quantity | 1x performance cold air intake kit |
| Part Number (SKU) | FLIS25066 |
| Main Pipe Diameter | 76 mm (3") |
| MAF Tube Diameter | 70 mm — factory replacement spec |
| Material | Aluminum piping |
| Pipe Finish | Powder-coated black |
| Air Filter | Cone, high-flow, red dry cotton gauze |
| Filter Type | Dry (no oil required), washable and reusable |
| MAF Housing | CNC-machined aluminum |
| Silicone Couplers | Multi-ply high-temp silicone |
| Hose Clamps | Stainless steel |
| Hardware | All mounting hardware included |
| Installation | 100% bolt-on — no welding, no drilling |
| Fitment Design | Vehicle-specific |
Key Features
- Direct bolt-on replacement for the factory airbox and intake tract: the aluminum tube and high-flow cone filter swap in place of the restrictive stock airbox and plastic intake tubing, with all mounting hardware included — no cutting, welding, or fabrication required.
- Mandrel-bent, powder-coated aluminum tubing: smooth bends keep the intake path consistent, the black powder coat resists corrosion, and multi-ply high-temp silicone couplers with stainless clamps seal every joint.
- CNC-machined 70 mm MAF housing: the aluminum MAF housing matches the factory replacement spec and retains the original sensor position and bore, so the factory MAF sensor transfers straight in.
- Washable, reusable dry cone filter: the red cotton-gauze element rinses clean with no filter oil required, so you re-use one filter instead of buying disposable paper elements over the life of the car.
- Expected response and pull: typical seat-of-the-pants changes are sharper throttle response and stronger mid-range pull in the 2,500–5,000 RPM range where most daily driving happens, with results varying by vehicle condition and ECU calibration.
- Audible induction note: replacing the enclosed factory airbox lets you hear the QR25DE's intake under load — a deeper intake tone during acceleration and a rush of air at higher throttle openings.
- Light-load efficiency potential: smoother airflow can support more complete combustion under light load; real-world MPG still depends far more on driving habits, tire condition, and vehicle maintenance.
Who This Kit Is For
This Flashark cold air intake replaces the factory airbox and intake tube on 2013-2018 Nissan Altima S, SV, SL, and SR models with the 2.5L QR25DE four-cylinder engine — a first bolt-on upgrade for owners who want a more responsive, better-sounding daily driver without touching the rest of the powertrain.
- ✓ For you if you daily-drive a 2.5L Altima and want crisper throttle response and a more audible intake note
- ✓ For you if you want a washable, reusable filter instead of disposable paper elements
- ✓ For you if you want a hand-tools-only install finished in about 60–90 minutes
- ✓ For you if you have confirmed your engine is the 2.5L QR25DE four-cylinder, not the 3.5L V6
- ✗ Not for you if your Altima has the 3.5L V6 engine or is a Hybrid model
- ✗ Not for you if you expect a guaranteed horsepower or MPG gain from an intake alone
- ✗ Not for you if you live in California or another CARB-adopting state and need a street-legal part (see the Compliance Notice below)
Still weighing whether an intake is worth it? Read Are Cold Air Intakes Worth It? before you order, or browse the full range of Nissan Altima cold air intake kits.
Check Before Ordering
- Vehicle: exact fit for 2013-2018 Nissan Altima S, SV, SL, and SR with the 2.5L QR25DE four-cylinder. Trim names alone do not always confirm the engine — verify your displacement is 2.5L before ordering. If your vehicle isn't listed, browse the full range of Nissan cold air intake kits or message us with your VIN first.
- Intake type: this kit replaces the factory airbox and intake tract with an aluminum tube and a high-flow cone filter, so expect visible engine-bay changes and an intake sound the stock airbox does not produce.
- Filter care: the included filter is a dry cotton-gauze unit — clean it when dirt loads the pleats and never apply filter oil, since residue can contaminate the MAF sensor. See How to Clean Your Cold Air Intake Filter for the full process.
- Sensors: the factory MAF sensor transfers into the supplied 70 mm CNC-machined housing — install it in the correct orientation, tighten every coupler, and avoid touching the sensing element.
- Legality: not legal for sale or use in California (and other CARB-adopting states). Confirm your state and local emissions requirements before ordering a part for a street-driven vehicle.
- Install and water crossings: plan on a 100% bolt-on install of about 60–90 minutes, then check that the pipe and filter clear the radiator fan, battery, bodywork, and hot components. Avoid deep water crossings — water ingestion through the filter can cause hydrolock and severe engine damage.
Shipping & Returns
Free U.S. Shipping: Orders are typically processed within 1–2 business days and delivered within 7–9 business days. Additional charges may apply to remote areas.
30-Day Returns: Unopened and unused items in their original packaging may be returned within 30 days of receipt. Return shipping is covered for verified quality issues.
Worry-Free Delivery: Optional protection against eligible loss, theft, delay, or transit damage is available at checkout.
