$52.99 USD
MSRP $82.79 36.0% Off
Free Ground Shipping!
In Stock & Ready to Ship!
Find a Dealer

K&N 33-2329 Air Filter

Replacement Filters > Replacement Air Filter
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   4.9 out of 5 stars   11 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 33-2329 Air Filter fits some Lexus NX300h, and Toyota Prius 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
Height0.875 in (22 mm)
Package Contents1 Air Filter
Package Quantity1
Product StyleUnique Air Filters
Outside Length11.563 in (294 mm)
Outside Width7.688 in (195 mm)
Weight0.8 lb (0.4 kg)
Filter Re-Oiling Amount0.72 oz (21 ml)
Product Box Height11.56 in (294 mm)
Product Box Length10.44 in (265 mm)
Product Box Width1.75 in (44 mm)

K&N 33-2329 Air Filter Product Reviews

Tuesday, January 23, 2018 - Part 33-2329
Filter improved Prius performance. Good filter. I would have rated it 5 stars if it had been 20 cheaper.

Paul Jamieson
Auckland, New Zealand
Wednesday, November 8, 2017 - Part 33-2329
Great product Put this filter in my prius and I loved it. Easy to install, clean, and recharge. Great air flow and performance. This is the only brand filter I will use on engines.

Bryan Erickson
Thursday, July 13, 2017 - Part 33-2329
Added an easy 3-5mpg.

Dave Diaz
Sanger, California
Monday, October 3, 2016 - Part 33-2329
Even increased mileage on my Prius.

Shawn Yates
Maple Falls, Washington
Thursday, July 7, 2016 - Part 33-2329
Great fit, easy to install. The best part is the kids at the oil change place don't bug me to buy an air filter every time I visit them. Gas mileage improved slightly. I'm happy with the product.

Andrew Richter
Los Angeles, California
Tuesday, October 20, 2015 - Part 33-2329
I previously reported my review of this item already. In any event, this is one of (3) three I have purchased since Sept 29, 2015. I have them on my wife's 2015 Avalon Limited Hybrid and our 2005 PRIUS; the one for my 2016 Mustang Gt Premium convertible has NOT arrived yet. I think they are a great product that saves you money on filter replacement besides getting better gas mileage.

William Davis
Roseville, California
Monday, October 19, 2015 - Part 33-2329
Just installed it on our 2005 Prius after we put one on my wife's 2015 Avalon Limited Hybrid. The Prius only has 27,000 miles on it. However, the K & N made about a 2 to 3 mpg difference in her 2008 Camry Hybrid XLE so I figured it would hopefully do the same for the Prius. This is the 6th car we have equipped with the K & N air filter we have also ordered one for my new 2016 Mustang GT Premium convertible. Forget about the gas savings, normally the engine air filter gets replaced every 2nd or 3rd oil change so after the 3rd air filter replacement, the K & N air filter is FREE for the rest of the time you own the vehicle. I normally keep all my vehicles over 200,000 or until they start flunking smog so you can see the definite financial advantage of the K & N that most people do NOT think about.

William Davis
Roseville, California