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E-3971
$57.99 USD
MSRP $78.29 25.9% Off
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K&N E-3971 Air Filter

Replacement Filters > Custom Air Filter
  • Designed to provide increased horsepower and acceleration
  • Specifically developed for Off-Road, Motocross, ATVs, UTVs and Side by Sides
  • Pleated cotton media provides a large filtration area offering low restriction, high-capacity and long service intervals
  • Multiple layers of woven cotton gauze media offers excellent filtration
  • Fits directly into OEM air box with application specific sealing bead ensuring a precise fit
  • No fuel management modifications are required to obtain increased performance
  • Washable & reusable, most are pre-oiled and ready to ride!
  • One Year Limited Warranty
K&N off-road replacement air filters are ideal for extended use in dirty and dusty off-road riding and provide clean carburetion even at high altitude. Generally, no jet changes are required with just a K&N filter element. K&N replacement air filters are washable and reusable and provide high air-flow with excellent filtration.

[More Information on Off-Road Motorcycle and ATV Air Filters]

Product Specifications

Air Filter ShapeRound
Filter MaterialCotton Gauze
Filter Re-Oiling Amount0.5 oz (15 ml)
FlangesNone
Height2.75 in (70 mm)
Inner WireNo
Inside Diameter4.625 in (117 mm)
Outside Diameter6 in (152 mm)
Package Contents1 Air Filter, 1 K&N 1oz Sealing Grease
Package Quantity1
Product Box Height3.5 in (89 mm)
Product Box Length6.31 in (160 mm)
Product Box Width6.56 in (167 mm)
Product StyleRound Air Filter
Top Material/FinishNone
Top StyleOpen
Weight0.7 lb (0.3 kg)

Customer Feedback

Be the first to review part E-3971
I have not had a chance to use this product yet and probably will not until this summer. However I am giving it 4 stars based on looks alone. I have seen the OEM filter for the Indian Scout and it looks very cheap This looks like a much more substantial/quality filter that will do the job much better and last a long time. I expect it will pay for itself in longevity.

Michael Grissom
Racine, Wisconsin
I installed BA 2201 air filter a year back from authorized dealer here in the capital city. To my surprise, he took exactly 3 minutes to install the new part in my Bajaj Pulsar 200F. When I started the ignition with a roaring voice, I asked the K&N guy, Did you do something in engine or in exhaust. Guys in India Pulsar 220 is proudly the fastest Indian bike, where I have reached upto 145kmph, but after installing K&N, I reached 153kmph. For increased power, kmpl, torque, and heart taking exhaust sound, I think every pulsar owner should ask for it. And for K&N, I would request them to come up something more related to exhaust kits and other performance enhancers for Indian mades. Yo man, it rocks!

Ashish K Rana
New Delhi, India
K & N filter is really a high performance filter.. It boosts up the engine power and gives us a real racing experience.. It's the best air filter for every Indian bike.. It Increases Horse power with no decrease in mileage. One of my friends has fitted it on his Honda Stunner and he is fully satisfied with it..I am also going to fit on mine soon....
.. cheerss!!!!!!

VINAY ARORA
Delhi, India