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Subaru WRX Air Filter

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$43.99 List Price $74.69 Save $30.70 Availability: In Stock
  • APW Bestseller
  • Low Price Guarantee



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 100% legal 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
  • 50-state legal and ‘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
  • SKU#: K33332304
  • Brand: K&N
  • Quantity Sold: Sold Individually
  • Recommended Use: Performance
  • Anticipated Ship Out Time: Same day - 1 business day
  • Filtration Efficiency Rating: 96 to 99%
  • Warranty: Million-mile K&N limited warranty
Fits the following Subaru WRX Years:
  • 2013-2014 | 4 Cyl 2.5L | Base, Limited
Rating: (see review/s)

"The filter and product itself is tops but there was no installation manual or instructions on the proper way of cleaning the filter and applying the oil after cleaning. I had to refer to a Simota Cleaning Kit with a similar material to K&N to be educated on how often it should be cleaned and the directions in cleaning." posted by: Tony on April 20, 2009

$35.99 List Price $49.99 Save $14.00 Availability: In Stock
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Oiled filters are not as effective as dry filters because they form a barrier for airflow which sacrifices some of your ride’s horsepower and torque potential. Using an AEM oil-free DryFlow synthetic filter eliminates this problem – and the mess of cleaning an oiled filter. Started in 1987, AEM has garnered a reputation for engineering some of the best and most cost-effective air intake systems for high-output/race vehicles in particular.

  • Easy to clean since no oil is involved
  • Made in America
  • Replacement for stock or worn out air filters
  • Complements AEM Cold Air Intakes, Brute Force, Short Ram and V2 cold air systems
  • No oil allows better air filtration
  • Increased air flow translates directly to increased horsepower and torque
  • Lifetime warranty
  • SKU#: A182820304
  • Brand: AEM Air
  • Fit Note: Panel, H-2.438 in., L-8.75 in., W-8.563 in.
  • Color/Finish: Red
  • Product Fit: Direct fit
  • Quantity Sold: Sold Individually
  • Recommended Use: OE Upgrade
  • Style: Original Equipment
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Fits the following Subaru WRX Years:
  • 2013 | 4 Cyl 2.5L | Base, Limited