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OE Quality
60-Day Returns
K&NPart #: 33-2478
K&N 33-2478 Engine Air Filter
6 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$81.08Free Shipping
Free ShippingNo Cost to Continental U.S.
Free Returns*Wrong fit? No cost
60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
In Stock · Ready To Ship
Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Nissan, Altima
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST
Not what you need? See all Engine Air Filter options
K&N 33-2478 Engine Air Filter
| Brand | K&N |
|---|---|
| Part Number | 33-2478 |
| Air Filter Material | Cotton gauze |
| Air Filter Shape | Panel |
| Filter Re-Oiling Amount | 1.3 oz (39 ml) |
| Flanges | None |
| Frame Design | Flexible |
| Height | 1 in (25 mm) |
| Item Type | High performance |
| Oil Included | Filter is pre-oiled |
| Outside Length | 11.438 in (291 mm) |
| Outside Width | 11.375 in (289 mm) |
| Package Contents | 1 air filter |
| Package Material | Paperboard |
| Package Quantity | 1 |
| Package Type | Box |
| Pre-Screened | No |
| Product Style | Unique air filters |
| Title | K&n 33-2478 replacement air filter |
| Warranty | 1,000,000 miles/10 year |
| Washable | Yes |
| Weight | 1.6 lb (0.7 kg) |
This part fits 6 vehicles. Search below:
| Year | Make | Model | Body Type | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2018 | Nissan | Altima | 2.5L | L4 | N/A | K&N Replacement Air Filter | |
| 2017 | Nissan | Altima | 2.5L | L4 | N/A | K&N Replacement Air Filter | |
| 2016 | Nissan | Altima | 2.5L | L4 | N/A | K&N Replacement Air Filter | |
| 2015 | Nissan | Altima | 2.5L | L4 | N/A | K&N Replacement Air Filter | |
| 2014 | Nissan | Altima | 2.5L | L4 | N/A | K&N Replacement Air Filter | |
| 2013 | Nissan | Altima | Sedan | 2.5L | L4 | N/A | K&N Replacement Air Filter |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
0421843165463TA0A49073500047917683073A1877A3675CA46297AF1559AF5220AF6297CA11450DA5220LX3498MA10003MGA49073PA10023PA6297PA9915SA11450VA312WAF5220
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.