K&N E-0666 Air Filter

Replacement Filters / Replacement Air Filter
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5     4 Customer Reviews
$53.99 USD
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Product Overview

  • 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®
The K&N E-0666 Air Filter fits some Porsche Boxster, and Porsche Cayman models. See vehicle applications link for details.
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]
Air Filter ShapeOval Tapered
Filter MaterialCotton Gauze
Height8.375 in (213 mm)
Package Contents1 Air Filter, 2 Screws
Package Quantity1
Product StyleUnique Air Filters
Base Outside Diameter4.188 in (106 mm)
Base Outside Width5.063 in (129 mm)
Top Outside Length3.344 in (85 mm)
Top Inside Width2.344 in (60 mm)
Top StyleRubber
Weight1 lb (0.4 kg)
Filter Re-Oiling Amount1.57 oz (46 ml)
Product Box Height9.06 in (230 mm)
Product Box Length5.56 in (141 mm)
Product Box Width4.56 in (116 mm)
Inner WireNo
WARNING: Cancer and reproductive

K&N E-0666 Air Filter Product Reviews

Wednesday, June 6, 2018 - Part E-0666
Fit my car perfectly and always recommend K&N Filters on any vehicle.

Dennis Wygocki Jr
Shelby Township, Michigan
Monday, March 23, 2015 - Part E-0666
I've only just had the two filters installed in our new Cayman GTS so I can't do an actual review for them. However, based on previous experience for probably 15 years with K&N air filters, I expect these to be fantastic.

Jim Hopgood
Monday, September 1, 2014 - Part E-0666
Always used K&N products & will continue. Great product.

Conrad Winowski
New Jersey