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Replacement Filters > Custom Air Filter

 List Price: $84.32
Your Price: $56.99

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E-3720
 
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K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for virtually every vehicle on the road. These filters are washable and reusable and are custom designed to fit into your existing factory air box. Their drop-in design means adding performance is simple. With most vehicles you simply remove the disposable air filter and replace it with a K&N. See applicable instruction sheet for details. Our stock replacement air filters for street vehicles are covered by our famous K&N Million-Mile Limited Warranty™ and will be THE LAST AIR FILTER YOUR VEHICLE WILL EVER NEED.

[More Information on Replacement Air Filters]
  • Designed to boost horsepower and rate of acceleration
  • Can be cleaned and used again
  • High air flow with exceptional filtration
  • Lasts up to 50,000 miles before cleaning is required depending on driving conditions
  • Works with original equipment manufacturer vehicle electronics
  • Emissions legal in all 50 US states
  • Will NOT void vehicle warranty
  • Million Mile Limited Warranty®


Product Specifications 
Air Filter Shape:Round
Filter Material:Cotton Gauze
Filter Re-Oiling Amount:1.46 oz (43 ml)
Flanges:None
Height:2.75 in (70 mm)
Inner Wire:No
Inside Diameter:11.75 in (298 mm)
Outside Diameter:13.5 in (343 mm)
Package Contents:1 Air Filter
Package Quantity:1
Part Number:E-3720
Product Box Height:14.25 in (362 mm)
Product Box Length:14.13 in (359 mm)
Product Box Width:4.38 in (111 mm)
Product Style:Round Air Filter
Top Material/Finish:None
Top Style:Open
Weight:2 lb (0.9 kg)


Customer Feedback      Be the first to review part E-3720

Recently fitted one of your air filters to my Nissan GU Patrol, an immediate and notable difference was realized, a lot less pedal to get the vehicle moving and keep it moving, better power and economy, will pay for itself in no time, great product K&N.
Steve Haynes, Australia
I have been a LONG time K&N Air Filter user...motorcycles and cars/trucks. K&N has never let me down! A great product that can add performance and is reusable...a no-brainer!! Purchased this air filter for my 2013 Nissan Juke NISMO...6 speed manual, front wheel drive. A simple upgrade that took minutes to install and adds a nicer tone under the hood and slightly better fuel economy when your foot isn't burying the pedal. As I live in a sandy/salty area, I like the fact that I can service my own air filter and not have to be constantly replacing... A great buy!
Adam, Oak Island, North Carolina
The Nissan I have moves along well and now it moves even better. Replaced the air filter with K&N and also did the cabin filter at same time 16,000 mi.
Steve, Florida