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K&N K&N Engine Air Filter: High Performance, Premium, Washable, Replacement Filter: 2016-2019 Subaru H4 1.6/2.0/2.4 L (Ascent, Crosstrek, Forester, Impreza, XV), 33-5064

60 Reviews
  • ULTIMATE LONGEVITY: 10-Year/Million Mile Limited Warranty protects for the life of your vehicle
  • 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

$55.24

SKU:024844365590
  • ULTIMATE LONGEVITY: 10-Year/Million Mile Limited Warranty protects for the life of your vehicle
  • 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 dollars over 10 years by avoiding disposable filters
  • ECO-FRIENDLY: Using a washable, reusable product helps reduce replacement waste. A 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
Weight 1.3 lbs
Dimensions 10.438 × 1.75 × 11.563 in

Latest reviews

  1. TJ

    This is my 6th filter in the past 2 years – the first one without stickers. Is it fair to reduce the rating because that won’t affect performance? Well if the shop replaced out because it didn’t have the stop sticker, then a star less is appropriate.

    Overall each filter has increased fuel economy and acceleration- so I keep getting the filters. Now I just have to stop trading in cars…

  2. KingWilliamII

    I recently purchased an engine air filter and interior cabin filter from K&N. They are great quality filters that were made to fit my car, install easily, and come with a lifetime guarantee, meaning I won’t have to replace them every 12,000! When I did the math it made perfect sense to make the switch to K&N. I will be ordering replacement filters for my wife’s car next.

  3. 2022 WRX

    Excessive oil straight out of the packing. I rested the filter on paper towels to remove some of it but it turned the towels light pink all the way through. K&N did not respond to my email with included pictures. I don’t have confidence in this product, not using it in my vehicle.

  4. 15 year kn user

    I’ve purchased filters for years for all vehicles and dirt bikes etc. this one had the black resin molding material leaking down the pleat of the filter which looked like poor manufacturing but also would clearly block air flow. First time but serious flaw.

  5. Yessir

    It’s an exact fit allows for 100% filtration so that no pollutants go around or find there way through some crack. Which I know should already be happening but those low quality filter don’t Always do the best job. Definitely worth the investment.

  6. A. Dodson

    I’ve been using K&N air filters for various vehicles I’ve owned for over 25 year’s. Their filters work very well. I’ve always noticed better engine responsiveness and a slight bump in MPGs. Thank you K&N Engineering for making a fine product.

  7. John

    I recently purchased a new Subaru Forester. One of the first things I did was to Order a K&N air and oil filter for it. The price is right, the quality of the filters is right. I would recommend K&N to anyone who wants their engine to last.

  8. K&N Fan

    It still baffles me that all cars are still sold with generic paper air filters that clog easily and reduce airflow, which reduces performance. Once installed, I noticed an immediate improvement in throtle response.

  9. Riyach

    Never disappointed in these filters. Buy the cleaning kit and use it every time you change the oil. I use K&N filers in all of my vehicle. The oldest one is from 2015. I sell my cars before these need replacing.

  10. Chuck

    Great Lifetime air filter. Just clean and re-oil once per year and away you go. I have a Subaru Ascent with a turbocharged engine and this allows more air in yet cleans it superbly.

  11. B

    Have used K&N filters for 2 decades in 6 different vehicles and never a problem. Slight uptick in fuel mileage but nothing noteworthy. Convenience factor is the major “like” for me.

  12. Randy L

    Engine filter appears to give my 2021 Subaru more power and better fuel economy. Driving a 200 mile trip my fuel mileage increased by 3 miles per gallon. Very good purchase

  13. Anonymous

    Simply love it. Best filter on the market. Doesn’t matter if you’re driving a sports car, Mcfly’s truck, laggin wagon or work van, these filters are worth every penny.

  14. Chad

    Perfect replacement for both my MY20 Forester and also MY21 Outback. Have use dthes ein all my cars and highly recommend them for an easy swap out.

  15. C Well

    Good quality filter that fits well. I wanted a filter that wasn’t cheaply made and could be used for years. K&N makes great products.

  16. Ryan F

    K&N is known on reputation alone, that’s the reason I use their products for their high performance and value of a reusable product.

  17. James

    Have used K&N Air Filters for decades. Fit, Finish, Performance and ease of maintenance I’ve come to expect.

  18. Ross

    Great fit, slide in replacement. The filtration & durability will be great for my vehicles.

  19. AJ

    Filter is a perfect fit. Improved air flow and will be last filter needed to purchase.

  20. Edward

    Excellent filters and excellent service. Items were delivered ahead of expectations.

  21. Arturo4WD

    You notice the difference right away and it was so easy to install just drop it in.

  22. rockier

    The air filter is of good guilty and make the car get better gas millage.

  23. Alessandro

    The K&N filter has improved the acceleration of my Subaru, great filter.

  24. Mark O.

    I’ve used K&N for years, just getting the girlfriend’s car up to snuff.

  25. Sean

    Warranty is nice, but didnt change/improve driving of vehicle at all.

  26. Rich Hunn

    Ran K&N on our desert race cars, works just as good on the street

  27. Weud

    I always switch out my new cars to K&N Replacement Air Filters.

  28. JB

    Make This end up on the filter to make installation easier.

  29. Aaron

    Shipping was fast and the filter fit perfectly, Thanks!

  30. cdr

    Perfect fit. Looking forward to many year’s of service!

  31. TJ

    This is my 6th filter in the past 2 years – the first one without stickers. Is it fair to reduce the rating because that won’t affect performance? Well if the shop replaced out because it didn’t have the stop sticker, then a star less is appropriate.

    Overall each filter has increased fuel economy and acceleration- so I keep getting the filters. Now I just have to stop trading in cars…

  32. KingWilliamII

    I recently purchased an engine air filter and interior cabin filter from K&N. They are great quality filters that were made to fit my car, install easily, and come with a lifetime guarantee, meaning I won’t have to replace them every 12,000! When I did the math it made perfect sense to make the switch to K&N. I will be ordering replacement filters for my wife’s car next.

  33. 2022 WRX

    Excessive oil straight out of the packing. I rested the filter on paper towels to remove some of it but it turned the towels light pink all the way through. K&N did not respond to my email with included pictures. I don’t have confidence in this product, not using it in my vehicle.

  34. 15 year kn user

    I’ve purchased filters for years for all vehicles and dirt bikes etc. this one had the black resin molding material leaking down the pleat of the filter which looked like poor manufacturing but also would clearly block air flow. First time but serious flaw.

  35. Yessir

    It’s an exact fit allows for 100% filtration so that no pollutants go around or find there way through some crack. Which I know should already be happening but those low quality filter don’t Always do the best job. Definitely worth the investment.

  36. A. Dodson

    I’ve been using K&N air filters for various vehicles I’ve owned for over 25 year’s. Their filters work very well. I’ve always noticed better engine responsiveness and a slight bump in MPGs. Thank you K&N Engineering for making a fine product.

  37. John

    I recently purchased a new Subaru Forester. One of the first things I did was to Order a K&N air and oil filter for it. The price is right, the quality of the filters is right. I would recommend K&N to anyone who wants their engine to last.

  38. K&N Fan

    It still baffles me that all cars are still sold with generic paper air filters that clog easily and reduce airflow, which reduces performance. Once installed, I noticed an immediate improvement in throtle response.

  39. Riyach

    Never disappointed in these filters. Buy the cleaning kit and use it every time you change the oil. I use K&N filers in all of my vehicle. The oldest one is from 2015. I sell my cars before these need replacing.

  40. Chuck

    Great Lifetime air filter. Just clean and re-oil once per year and away you go. I have a Subaru Ascent with a turbocharged engine and this allows more air in yet cleans it superbly.

  41. B

    Have used K&N filters for 2 decades in 6 different vehicles and never a problem. Slight uptick in fuel mileage but nothing noteworthy. Convenience factor is the major “like” for me.

  42. Randy L

    Engine filter appears to give my 2021 Subaru more power and better fuel economy. Driving a 200 mile trip my fuel mileage increased by 3 miles per gallon. Very good purchase

  43. Anonymous

    Simply love it. Best filter on the market. Doesn’t matter if you’re driving a sports car, Mcfly’s truck, laggin wagon or work van, these filters are worth every penny.

  44. Chad

    Perfect replacement for both my MY20 Forester and also MY21 Outback. Have use dthes ein all my cars and highly recommend them for an easy swap out.

  45. C Well

    Good quality filter that fits well. I wanted a filter that wasn’t cheaply made and could be used for years. K&N makes great products.

  46. Ryan F

    K&N is known on reputation alone, that’s the reason I use their products for their high performance and value of a reusable product.

  47. James

    Have used K&N Air Filters for decades. Fit, Finish, Performance and ease of maintenance I’ve come to expect.

  48. Ross

    Great fit, slide in replacement. The filtration & durability will be great for my vehicles.

  49. AJ

    Filter is a perfect fit. Improved air flow and will be last filter needed to purchase.

  50. Edward

    Excellent filters and excellent service. Items were delivered ahead of expectations.

  51. Arturo4WD

    You notice the difference right away and it was so easy to install just drop it in.

  52. rockier

    The air filter is of good guilty and make the car get better gas millage.

  53. Alessandro

    The K&N filter has improved the acceleration of my Subaru, great filter.

  54. Mark O.

    I’ve used K&N for years, just getting the girlfriend’s car up to snuff.

  55. Sean

    Warranty is nice, but didnt change/improve driving of vehicle at all.

  56. Rich Hunn

    Ran K&N on our desert race cars, works just as good on the street

  57. Weud

    I always switch out my new cars to K&N Replacement Air Filters.

  58. JB

    Make This end up on the filter to make installation easier.

  59. Aaron

    Shipping was fast and the filter fit perfectly, Thanks!

  60. cdr

    Perfect fit. Looking forward to many year’s of service!

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