K&N E-9178 Air Filter

Replacement Filters / Replacement Air Filter
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$77.99 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-9178 Air Filter fits some Mercedes-Benz 190, Mercedes-Benz 190E, Mercedes-Benz 200, Mercedes-Benz 200E, Mercedes-Benz 200T, Mercedes-Benz 200TE, Mercedes-Benz 230CE, Mercedes-Benz 230E, and Mercedes-Benz 230TE 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
Filter MaterialCotton Gauze
Height2.25 in (57 mm)
Inner WireNo
Inside Length15.75 in (400 mm)
Inside Width8.125 in (206 mm)
Outside Length17.5 in (445 mm)
Outside Width9.875 in (251 mm)
Top StyleOpen
Top MaterialNone
Package Contents1 Air Filter
Package Quantity1
Warranty1,000,000 Miles/10 Year
Product StyleOval Air Filter
Base Outside Length17.5 in (445 mm)
Base Outside Width9.875 in (251 mm)
Top Outside Length17.5 in (445 mm)
Top Outside Width9.875 in (251 mm)
Weight1.6 lb (0.7 kg)
Filter Re-Oiling Amount1.12 oz (33 ml)
Product Box Height2.88 in (73 mm)
Product Box Length20.5 in (521 mm)
Product Box Width12.75 in (324 mm)
WARNING: Cancer and reproductive

K&N E-9178 Air Filter Product Reviews

Saturday, June 27, 2015 - Part E-9178
I own a European version Mercedes w124 230E. This is a 2.3 liter, 4 cylinder M102 engine. With the K&N filter instantly power was increased specially at high revs. Mileage also increased specially on the road, perhaps a little in town. Though do not expect to convert your car engine into a V8.

Juan Garica
Bogota, Colombia
Tuesday, December 3, 2013 - Part E-9178
It installed as easily as the OEM filters. I noticed an immediate increase in performance. I haven't checked the mileage yet, but I also expect a small boost there as well. Highly recommend K&N filters!

Kenneth Stubert
Georgetown, Texas