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K&N E-3340 Air Filter

Replacement Filters > Round Air Filter
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   5.0 out of 5 stars   2 Customer Reviews
  • 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®
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 the majority of vehicles 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 K&N Replacement Air Filters]

Product Specifications

Air Filter ShapeRound
Filter MaterialCotton Gauze
Filter Re-Oiling Amount0.5 oz (15 ml)
Height3.25 in (83 mm)
Inner WireNo
Inside Diameter5.25 in (133 mm)
Outside Diameter6.25 in (159 mm)
Package Contents1 Air Filter
Package Quantity1
Product Box Height6.63 in (168 mm)
Product Box Length6.5 in (165 mm)
Product Box Width3.63 in (92 mm)
Product StyleRound Air Filter
Top Material/FinishNone
Top StyleOpen
Weight0.6 lb (0.3 kg)

K&N E-3340 Air Filter Product Reviews

Wednesday, August 27, 2014 - Part E-3340
I wanted to retrofit a modern air filter onto an 81 year old air cleaner that is an odd size by today's standards. I looked on several manufacturers' websites but none of them had a listing of their products by size - they were all application-driven. Only K&N had a lookup tool that lists what they have based on the size you enter in a tool. As it turned out they make a filter that was exactly the size I needed. They shipped it within 24 hours, it fits perfectly and there are no signs of restrictions in the air flow to the carburetor.

Don Shields
Philadelphia, Pennsylvania
Thursday, November 14, 2013 - Part E-3340
I ordered this to use in a special carb scoop that mimics the old hilborn injection type look and its going on my 1930 Ford coupe with a 580 hp small block Chevy. The workmanship and quality of the filter is great, and just what i expect from K&N and have used your products on many applications for years. Thanks

mark head