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Air Filter for 2009 Toyota 4Runner

We have 23 Items In-stock. Select your vehicle's Submodel to continue.

K&N - Performance Air Filters

K&N – PERFORMANCE AIR FILTERS

When most people think of top-of-the-line performance air filters, K&N comes to mind. That’s probably because in addition to being regarded as the world’s finest filtration company, K&N performance air filters will last as long as your vehicle’s engine does and are a factory replacement that can boost your horsepower output by as much as 4 horsepower. 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.

  • Replaces existing air filter
  • Boosts cold air flow which translates to more horsepower
  • Backed by K&N’s million mile warranty
  • Custom fit to your vehicle’s specifications
  • Cotton-gauze design features as many as 6 layers of filtration
  • The world’s best performance air filter
  • Only need to clean every 50,000 miles
  • All filters are washable, reusable and come already oiled by K&N
  • ‘Green’ design
  • Increases horsepower (up to 4 hp) and fuel efficiency
  • One air filter will last as long as one vehicle’s engine
  • Maintain with K&N Recharger kit - (not included)
  • Made in America
K&N Air Filter, K&N 33 Series, Cotton Gauze, Washable
$45.99 List Price $71.87 Save $25.88 Availability: In Stock
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  • SKU#: K33332281
  • Product Fit: Direct Fit
  • Quantity Sold: Sold Individually
  • Recommended Use: Performance
  • Style: Oiled
  • Anticipated Ship Out Time: Same day - 1 business day
  • Filtration Efficiency Rating: 96 to 99%
  • Warranty: Million-mile K&N limited warranty
see more Fits the following 2009 Toyota 4Runner submodels:
  • 6 Cyl 4.0L | Limited, SR5, Sport
Rating: (see review/s)

"Easy to setup didn't even take 1 minute to install. Better air intake can save you gas." posted by: Juanito on May 21, 2011

"even better feel after gibson exhaust was in stalled. great combo." posted by: on February 4, 2008 view all 4 reviews