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K&N 33-2473 Air Filter

Replacement Filters > Replacement Air Filter
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   5.0 out of 5 stars   13 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®
The K&N 33-2473 Air Filter fits some Acura ILX, Acura NSX, and Honda Civic Si 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]

Product Specifications

Air Filter ShapePanel
Filter MaterialCotton Gauze
Filter Re-Oiling Amount0.85 oz (25 ml)
Height1.063 in (27 mm)
Outside Length10.188 in (259 mm)
Outside Width6.375 in (162 mm)
Package Contents1 Air Filter
Package Quantity1
Product Box Height13.56 in (345 mm)
Product Box Length7.72 in (196 mm)
Product Box Width1.75 in (44 mm)
Product StylePanel Air Filter
Weight0.9 lb (0.4 kg)

K&N 33-2473 Air Filter Product Reviews

Friday, April 21, 2017 - Part 33-2473
Amazingly fast shipping - ordered it Friday at 10:30am and it was delivered Monday at 10:50am. I am in Ontario and it shipped from California. Definitely earned yourself a repeat customer. Love the product.

Welland, Canada
Monday, August 29, 2016 - Part 33-2473
I get 60-70 km more per tank with this filter installed. Well worth it.

Craig Maybee
Enfield, Canada
Monday, August 8, 2016 - Part 33-2473
Quality product and fast shipping.

Margaret Garza
Manchaca, Texas
Tuesday, July 19, 2016 - Part 33-2473
Easy to install. High quality material.

Sinan Salie
Boston, Massachusetts
Wednesday, June 29, 2016 - Part 33-2473
Good product, good price. Buy one and see....

John De Hamm
Campo, California
Wednesday, December 30, 2015 - Part 33-2473
Everything has gone smoothly. The purchase process was seamless, and the product is exactly as expected.

Terence Ness
Brentwood, Tennessee
Tuesday, October 6, 2015 - Part 33-2473
I purchased the filter as an upgrade, as not to void my factory warranty. It was easy to install and amazingly half the thickness. I've noticed an increase in responsiveness and power. Wouldn't have believed a filter could do this. My wheels now break loose at 5000 rpm in first gear. Will recommend it to anyone looking for a inexpensive upgrade. Thanks K&N

Matthew Brown
Cleveland, Ohio