• K&N 33-2374 Engine Air Filter
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K&N

K&N 33-2374 Engine Air Filter

K&N 33-2374 Engine Air Filter

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✔ K&N 33-2374 Engine Air Filter — Premium Washable Replacement Filter
✔ Fitment: 2007–2013 Nissan Altima (2.5L 4-cylinder), 2007–2010 Altima Hybrid, 2013 Altima Coupe (2.5L), and 2007–2014 Nissan Murano
✔ Direct replacement for OEM air filter — no modifications required
✔ Reusable — clean every 75,000 miles, then simply wash and re-oil the filter
✔ Washable — engineered to last for the life of your vehicle
✔ Increases airflow up to 50% more than standard disposable paper filters
✔ Million Mile Limited Warranty — the last filter your vehicle will ever need

 

K&N 33-2374 High-Flow Air Filter — for Nissan Altima and Murano

A clogged or dirty air filter can restrict engine performance and reduce acceleration. The K&N 33-2374 replacement filter increases airflow to the engine while providing exceptional filtration. Unlike disposable paper filters, this K&N filter is washable and reusable, saving you money over the life of the vehicle and reducing waste.

This high-performance panel filter features layered, oiled cotton gauze media designed to trap harmful contaminants while maximizing air flow. The filter is pre-oiled and ready to drop directly into your existing factory air box, making installation simple.

 

When to Replace

• Reduced engine power or sluggish acceleration
• Decreased fuel economy
• Visible dirt, dust, or debris accumulation on the filter
• Filter has been in service for 50,000 miles or more without cleaning
• You want to upgrade the performance of your vehicle

Product Details & Highlights

• ✔ Increased airflow — designed to boost horsepower and rate of acceleration
• ✔ Washable and reusable — engineered to last the lifetime of your vehicle
• ✔ Easy installation — pre-oiled and ready to drop into your factory air box
• ✔ Save money — avoids the cost of replacement disposable filters
• ✔ Eco-friendly — reduces waste by avoiding disposable filters
• ✔ Race-tested — the Official Air Filter of NASCAR, trusted on the racetrack
• ✔ Backed by K&N’s manufacturer warranty

Package Contents

• 1 × K&N 33-2374 air filter (pre-oiled)

FAQ

FAQ

Is this an OEM replacement or an aftermarket part?
This is a high-performance aftermarket replacement air filter, designed to fit directly into your factory air box as a drop-in replacement.

Does this fit my 2008 Nissan Altima?
Yes — the 2008 Altima with the 2.5L L4 engine is listed as compatible. We recommend verifying your specific model and year before ordering.

Does this fit the Nissan Murano?
Yes — the 2007–2014 Murano with the 3.5L V6 engine is listed as compatible. Please verify with your VIN.

How often should I clean this filter?
Under normal driving conditions, the filter can go up to 75,000 miles before cleaning is required.

Does this filter come pre-oiled?
Yes — the filter comes pre-oiled and ready to install.

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