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K&N E-9233 5.0 out of 5 stars 3 Customer Reviews
Replacement Filters > Replacement Air Filter

List Price: $85.87
Your Price: $57.99

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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 Large End Diameter:12.75 in (324 mm)
Air Filter Shape:Tapered Conical
Base Inside Diameter:10.438 in (265 mm)
Base Outside Diameter:12.75 in (324 mm)
Filter Material:Cotton Gauze
Filter Re-Oiling Amount:1.48 oz (44 ml)
Height:2.5 in (64 mm)
Inner Wire:No
Inside Diameter:10.438 in (265 mm)
Outside Diameter:12.75 in (324 mm)
Package Contents:1 Air Filter, 1 K&N 1oz Sealing Grease
Package Quantity:1
Part Number:E-9233
Product Box Height:4.38 in (111 mm)
Product Box Length:14.13 in (359 mm)
Product Box Width:14.13 in (359 mm)
Product Style:Tapered Conical Air Filter
Top Material/Finish:None
Top Outside Diameter:9.438 in (240 mm)
Top Style:Rubber
Weight:1.9 lb (0.8 kg)

Product Reviews

 Purchased this a month after I bought my 2001 Nissan Frontier which now has 130K miles. Adds Torque and HP since I have an automatic transmission. Wash and clean this filter 3 times so far and still looks as good as the day I installed. I wash the filter every 35-40K miles to prolong the life of my engine as well as keeping this filter clean.
Mike, California
 Superior product! Got this for my 2003 Nissan Frontier with the KA24DE 2.4L I4 engine. Shipping was good, came in about a week from ordering. Installation was super-basic, no special tools or anything but the best thing was the performance gain. I could feel noticiable gain to both torque and HP. I believe this product will stand up to the Million Mile Warranty!
Jarrod, Madera, California
 I have 98 with this and have much more power. Uncoverd
Mayco, Oregon