How often should I clean my K&N air filter?

K&N recommends cleaning and re-oiling your filter every 50,000 miles for normal highway use. If you drive in dusty conditions, you may need to clean it more often. A dirty-looking filter is a sign that it's time for maintenance.

Do I need to oil this filter?

Yes, this K&N filter uses a specially formulated oil to help trap dirt and debris. The oil is what makes the cotton media effective at filtration. You'll need to purchase a K&N filter cleaning and oiling kit separately to maintain the filter.

Is there a warranty on this filter?

Yes, K&N backs this filter with a 10-Year/Million Mile Limited Warranty. This means K&N will replace the filter if it's defective in materials or workmanship. The warranty does not cover damage from misuse or improper cleaning.

K&N Replacement Air Filter FORD F150 LIGHTNING 5.4L 99-04, F150 Harley-Davidson 5.4L 02-03

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Specifications

Brand: K&N
Part #: 33-2140-1
UPC: 024844087997

K&N Replacement Air Filter FORD F150 LIGHTNING 5.4L 99-04, F150 Harley-Davidson 5.4L 02-03

Name: K&N Replacement Air Filter FORD F150 LIGHTNING 5.4L 99-04, F150 Harley-Davidson 5.4L 02-03
Brand: K&N
Price: 83.99 USD
Availability: InStock

$83.99

Only 7 left in stock

Washable and reusable air filter. Drops right into the factory air box.

Key Features

Washable — clean and re-oil for extended use
Direct replacement — fits in the factory air box
Oiled cotton gauze media — traps dirt without restricting airflow
Backed by K&N's 10-Year/Million Mile Limited Warranty

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Fits these vehicles

Ford F-150 1999-2003
Ford F-150 Heritage 2004

Product Details

K&N washable, reusable High-Flow Air Filters feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower. Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N's 10-Year/Million Mile Limited Warranty. K&N drop-in replacement filters are designed to install easily into your factory air box. Upgrade today and start enjoying superior airflow and superior performance from K&N's most popular product!K&N washable, reusable High-Flow Air Filters feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower. Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N's No-Hassle Lifetime Limited Warranty. K&N drop-in replacement filters are designed to install easily into your factory air box. Upgrade today and start enjoying superior airflow and superior performance from K&N's most popular product!