K&N 33-2478 High-Flow Replacement Air Filter for 2013-2018 Nissan Altima

Vehicle Fitment

• 2013-2018 Nissan Altima S (FWD, 2.5L I4)
• 2013-2018 Nissan Altima SV (FWD, 2.5L I4)
• 2013-2018 Nissan Altima SL (FWD, 2.5L I4)
• 2013-2018 Nissan Altima SR (FWD, 2.5L I4)

Fitment Notes

• Fits 2.5L 4-cylinder models equipped with the factory air intake system only.
• Does not fit 3.5L V6-equipped Altima models.
• Direct replacement panel filter for the OE air box.

Features

• High-flow, multi-layer oiled cotton gauze filtration media.
• Helps improve airflow, horsepower, and throttle response.
• Washable and reusable for the life of the vehicle with proper maintenance.
• Direct drop-in replacement requiring no modifications.
• Engineered to provide up to 99% overall filtration efficiency.
• Durable molded sealing surface for an OE-quality fit.
• Requires servicing only about every 50,000 miles under normal highway driving conditions.
• Backed by K&N's No-Hassle Lifetime Limited Warranty.

Specifications

• Filter Type: Panel Air Filter
• Filter Media: Oiled Cotton Gauze
• Shape: Panel
• Washable: Yes
• Outside Length: 11.438 in (291 mm)
• Outside Width: 11.375 in (289 mm)
• Height: 1.00 in (25 mm)
• Overall Filtration Efficiency: Up to 99%
• Filter Re-Oiling Amount: 1.3 oz (39 ml)
• Position: Engine Air Intake

Included Components

• 1x K&N 33-2478 High-Flow Replacement Panel Air Filter

Product Description

The K&N 33-2478 High-Flow Replacement Air Filter is engineered as a direct-fit upgrade for 2013-2018 Nissan Altima models equipped with the 2.5L inline-four engine. Designed to fit seamlessly into the factory air box, it delivers increased airflow while maintaining excellent filtration to help support improved engine performance and throttle response.

Featuring K&N's premium multi-layer oiled cotton gauze media, this reusable filter can be washed and re-oiled instead of replaced, making it a cost-effective alternative to disposable paper filters. Its durable construction, precise fit, and lifetime serviceability provide long-term performance and reliable engine protection for everyday driving.