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2003 Toyota 4Runner
1
0
Price Match Guarantee
60-Day Returns
Lifetime Replacement
Price Match Guarantee
60-Day Returns
Lifetime Replacement
Guaranteed to Fit2003 Toyota 4Runner Change Vehicle

K&N®
2003 Toyota 4Runner - Air Filter, 6 Cyl., 4.0L Engine

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$64.99
Manufacturer #33-2281
Guaranteed to Fit2003 Toyota 4Runner Change Vehicle
Qty:
1

Your Vehicle Fit Details

Vehicle Name
Submodel
Engine
Fitment Information
2003 Toyota 4Runner
SR5
6 Cyl 4.0L
-
2003 Toyota 4Runner
Sport
6 Cyl 4.0L
-
2003 Toyota 4Runner
Limited
6 Cyl 4.0L
-

Highlights

Part:
Air Filter
Brand:
K&N
Style:
Oiled
Type:
Reusable
Series:
33 Series
Recommended Use:
Performance Replacement
Quantity Sold:
Sold individually
Warranty:
10-year or 1 million-mile K&N limited warranty
Prop 65 Warning:

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Promotions:
Fall Car Care Month
Filtration Efficiency Rating:
96 to 99%
Interchange Part Number:
KV400104, CA8918

Vehicle Fitment Information

Vehicle Name
Submodel
Engine
Fitment Information
2003-2009 Toyota 4Runner
Limited
6 Cyl 4.0L
-
2003-2009 Toyota 4Runner
SR5
6 Cyl 4.0L
-
2003-2009 Toyota 4Runner
Sport
6 Cyl 4.0L
-
2005-2010 Toyota Tundra
Base
6 Cyl 4.0L
-
2005-2010 Toyota Tundra
SR5
6 Cyl 4.0L
-
Page 1 of 3 | Showing 1 - 5 of 12 results

Product Information

K&N ENGINE AIR FILTER

K&N performance High-Flow Air Filters are engineered to improve engine performance by increasing airflow up to 50%. Unlike disposable paper filters which must be frequently replaced, K&N Air Filters are washable, reusable, and engineered to last for the life of your vehicle. K&N air filters are backed by our famous 10-Year/Million Mile Limited Warranty, and they provide an environmentally friendly way to reduce landfill waste by avoiding disposable filters. Engineered to fit easily into your factory air box, installation can be completed in a matter of minutes! K&N develops and tests each product on the world’s toughest race tracks, so we can bring the highest level of performance to your daily driving. Join the millions of customers who have saved money and improved vehicle performance by upgrading to K&N filtration.

  • Engineered power: State-of-the-art filtration media provides up to 50% more airflow than disposable paper filters to increase power and acceleration; clogged or dirty air filters can reduce your vehicle’s acceleration by up to 10%
  • Easy installation: Pre-oiled and ready to drop into your factory air box; one of the easiest and most cost-effective upgrades for your vehicle for quick performance gains
  • Saves money: K&N high-flow replacement air filters will save you $250 over 10 years by avoiding disposable filters
  • Eco-friendly: Using a washable, reusable product helps reduce replacement waste; K&N filter will last longer than 10 disposable filters
  • World class protection: Pushing the limits of engine protection by protecting your engine from harmful contaminants
  • Low-maintenance design: 50,000 miles before your first cleaning under normal highway driving conditions
  • High quality: Made in America
  • Race tested: The Official Air Filter of NASCAR; trusted on the racetrack—made for your vehicle

Started in 1969, K&N has garnered a reputation for engineering the world’s finest filtration products for cars, trucks, SUVs, motorcycles, race vehicles, commercial vehicles and anything in-between.

Need help?Call our product expert1-866-529-0412
Chat with us
Mondays - Sundays7am - 11pm ET | 4am - 8pm PT
Warranty Policy
Right parts, guaranteed. If you find any defects, let us know within 60 days and we’ll take care of it. Check out our Warranty Policy for more details.
Shipping Policy
We ship fast so you can get on the road that much faster. Check out our Shipping Policy for more details.
Easy Return Policy
We’re only happy if you’re happy. If you’re not entirely satisfied with your order, you may be entitled to a refund. Check out our Return Policy for more details.

Product Q&A

0
How do I wash this product?JacksMay 23, 2022
Best Answer:Hi Charles, I'm glad to assist you. You will need to order part number 33-2281. The K&N filter cleaner. Follow the instructions included with your cleaning kit in order to ensure you use the appropriate amount of oil when re-applying. Grab our sale price offer and click the two links below to order these today. I hope this helps. Happy shopping. <a href="https://www.carparts.com/air-filter/k-and-n/k33332281?can=CPJE1043_20220523" target="_blank">https://www.carparts.com/air-filter/k-and-n/k33332281?can=CPJE1043_20220523</a> (K&N air filter) <a href="https://www.carparts.com/air-filter-cleaner/k-and-n/k33990533?&vehicle[cylinders]=6&vehicle[liter]=4%2E0&vehicle[submodel]=SR5&vehicle[model]=4Runner&vehicle[make]=Toyota&vehicle[year]=2009?can=CPJE1043_20220523" target="_blank">https://www.carparts.com/air-filter-cleaner/k-and-n/k33990533?&vehicle[cylinders]=6&vehicle[liter]=4%2E0&vehicle[submodel]=SR5&vehicle[model]=4Runner&vehicle[make]=Toyota&vehicle[year]=2009?can=CPJE1043_20220523</a> (K&N filter cleaner)
Jeonino E.STAFFMay 23, 2022

Customer Reviews

K Amp;N Performance Air Filter - Premium Lifetime, Washable, Replacement Filter - 33-2281
Great purchase
I've only installed it yesterday so it's a little early for a good review. It did install in about five minutes and fit well.
Purchased on Apr 06, 2017
K Amp;N Performance Air Filter - Premium Lifetime, Washable, Replacement Filter - 33-2281
Purchase of a lifetime!....really!
Im very excited about my purchase of this k&n air filter. When I go to get my oil changed, I will never again have to hear, "It looks like you need to change your air filter... " Now if I could eliminate the other items they're always trying to sell us on!
Purchased on Dec 18, 2007
K Amp;N Performance Air Filter - Premium Lifetime, Washable, Replacement Filter - 33-2281
Great useful air filter 4Runner 2008
Easy to setup didn't even take 1 minute to install. Better air intake can save you gas.
Purchased on May 22, 2011