How to Wash a K&N Air Filter: A Comprehensive Guide

If you own a high-performance vehicle, you’re probably familiar with K&N air filters. These filters are designed to improve airflow, increase horsepower, and enhance engine sound. However, like any other air filter, K&N air filters need regular maintenance to perform at their best. In this article, we’ll discuss how to wash a K&N air filter to keep it in top condition.

What is a K&N Air Filter?

Before we dive into the washing process, let’s first understand what a K&N air filter is. K&N air filters are high-performance air filters that are designed to increase horsepower and acceleration while providing excellent filtration. These filters are washable and reusable, which makes them more eco-friendly than regular air filters.

Why Wash a K&N Air Filter?

While K&N air filters are washable and reusable, they still need regular cleaning to perform at their best. Over time, dirt and debris can clog up the filter, reducing its airflow and engine performance. By washing your K&N air filter, you can restore its filtration efficiency and improve your vehicle’s performance.

When Should You Wash Your K&N Air Filter?

It’s recommended that you wash your K&N air filter every 50,000 miles for normal driving conditions. However, if you frequently drive in dusty or dirty environments, you may need to wash your filter more often. You can also check your filter’s condition by inspecting it. If the filter is visibly dirty or clogged, it’s time to clean it.

How to Wash a K&N Air Filter: Step-by-Step Guide

Here’s a step-by-step guide on how to wash a K&N air filter:

  1. Remove the filter from your vehicle.
  2. Gently tap the filter to remove any loose dirt and debris.
  3. Spray the K&N Power Kleen onto the filter, saturating it completely.
  4. Let the cleaner sit on the filter for 10 minutes.
  5. Rinse the filter with low-pressure water, starting from the clean side and working your way out.
  6. Repeat steps 3-5 if necessary.
  7. Allow the filter to dry completely before reinstallation.

What is K&N Power Kleen?

K&N Power Kleen is a specially formulated cleaner that’s designed to clean K&N air filters. It’s a biodegradable, phosphate-free, and non-toxic cleaner that’s safe for the environment. It’s important to use the K&N Power Kleen instead of regular household cleaners, as they can damage the filter.

Tips for Washing Your K&N Air Filter

Here are some tips to keep in mind when washing your K&N air filter:

  • Always follow the manufacturer’s instructions when washing your filter.
  • Never use compressed air or a high-pressure washer to clean your filter, as it can damage the filter.
  • Make sure the filter is completely dry before reinstallation.
  • Inspect the filter for any damage or tears before reinstalling it.
  • Consider purchasing a K&N Recharger kit, which includes both the Power Kleen and the K&N Filter Oil.


Washing your K&N air filter is an important step in maintaining your vehicle’s performance. By following the manufacturer’s instructions and using the right products, you can keep your filter in top condition for years to come. Remember to clean your filter regularly and inspect it for any damage or tears. With a little maintenance, your K&N air filter can help you get the most out of your vehicle.

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