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K&N E-3740 4.7 out of 5 stars 3 Customer Reviews
Replacement Filters > Custom Air Filter

 List Price: $86.03
Your Price: $57.99

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The K&N E-3740 replacement air filter is designed to increase horsepower and acceleration by reducing restriction and increasing air flow to your engine. The E-3740 is made with oiled layers of woven cotton that offer superior filtration and can be washed and reused repeatedly. K&N replacement air filters can go up to 50,000 miles before cleaning is required, depending on driving conditions. One K&N replacement air filter costs less than replacing disposable air filters over and over again. The E-3740 is simple to install and is custom designed to fit right into the factory air box of older Ford Scorpio and Peugeot models, as well as other applications. [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, 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 Outlet Shape:Not Flanged
Air Filter Shape:Round
Filter Material:Cotton Gauze
Filter Re-Oiling Amount:1.3 oz (39 ml)
Height:2.313 in (59 mm)
Inner Wire:No
Inside Diameter:12 in (305 mm)
Outside Diameter:14 in (356 mm)
Package Contents:1 Air Filter
Package Quantity:1
Part Number:E-3740
Product Box Height:14.25 in (362 mm)
Product Box Length:14.13 in (359 mm)
Product Box Width:4.38 in (111 mm)
Product Style:Round Air Filter
Top Material/Finish:None
Top Style:Open
Weight:2 lb (0.9 kg)

Product Reviews      Review part E-3740

 Great product and arrived in perfect condition.
Dennis, Tampa, Florida
 Your customer service department provided great service when I had to reorder/exchage air filters. I do like how your air filter works.
Michael Slater, Bondurant, Iowa
 Needed a shorter filter to fit my 383 in a 78 Corvette so I asked a K&N tech if they had something. He sent me an email with this part number (E-3740). Fits perfect and since it is a lifetime filter, you can't beat the price.
Larry, Texas