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K&N E-3750 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   5 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.

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Product Specifications

Filter MaterialCotton Gauze
Height4 in (102 mm)
Inner WireYes
Inside Diameter12 in (305 mm)
Outside Diameter14 in (356 mm)
Top StyleOpen
Top MaterialNone
Air Filter ShapeRound
Package Contents1 Air Filter
Package Quantity1
Product StyleRound Air Filter
Air Filter Outlet ShapeNot Flanged
Weight2.9 lb (1.3 kg)
Filter Re-Oiling Amount2.31 oz (68 ml)
Product Box Height4.38 in (111 mm)
Product Box Length14.13 in (359 mm)
Product Box Width14.13 in (359 mm)

K&N E-3750 Air Filter Product Reviews

Monday, April 10, 2017 - Part E-3750
Exactly what I need for my 48 Ford.. shipping fast.. excellent service... thank you ...will shop again!

Patricia M Walberg
Brooklyn Park, Minnesota
Friday, April 1, 2016 - Part E-3750
K&N filters are the best on the market, I use them on all my performance cars and the online store has the best prices and fast shipping.

Tuesday, February 3, 2015 - Part E-3750
Best air filter made. Hands down.

Friday, January 16, 2015 - Part E-3750
Best air filter money can buy. More power and better mpg.

San Diego, California
Wednesday, June 25, 2014 - Part E-3750

Shawn Theron
Baltimore, Maryland