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E-3678
$48.99 USD
MSRP $76.69 36.1% Off
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K&N E-3678 Air Filter

Replacement Filters > Custom Air Filter
  • 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.

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Available Information

Product Specifications

Air Filter ShapeRound
Filter MaterialCotton Gauze
Filter Re-Oiling Amount1.06 oz (31 ml)
FlangesNone
Height2.75 in (70 mm)
Inner WireNo
Inside Diameter8.25 in (210 mm)
Outside Diameter10 in (254 mm)
Package Contents1 Air Filter
Package Quantity1
Product Box Height3.94 in (100 mm)
Product Box Length10.25 in (260 mm)
Product Box Width10.25 in (260 mm)
Product StyleRound Air Filter
Top Material/FinishNone
Top StyleOpen
Weight1.4 lb (0.6 kg)

Customer Feedback

Be the first to review part E-3678
I have been driving my 2013 Ford Transit Connect for a couple of months. I have purchased KN filters for all of my previous vehicles. The filter in my Vuck ( best description of a van and a truck) has increaincreased the power in my Vuck. ..and only slightly in the mileage category. I find it important to be able to pass someone on a 2 lane and this filter did it all. If you have a Vuck I strongly recommend it.

Douglas Lichtenwalter
Fredericktown Ohio
I am happy with the outcome of my installation of my new K&N filter. I immediately noticed the performance difference and love the sound. After seeing the change in my vehicle, my brother is purchasing one for his 2013 Ford Explorer.

Thomas Bishop
Virginia
Easy step by step installation, amazing timing on the shipping. I have a ford 350 with a 6.0 and any one that has one knows the 7.3s are way better but after I put this on it was an amazing difference in truck all together, worth the money.

Benjamin
Texas