Requires a 337.’not a simple swap.

Jacob W Verified Purchase

Challenger Air Filter Piper

I’m very happy

Roberto B Verified Purchase

Challenger Air Filter Cessna

Great STC, I get an extra 150 to 200 fpm climbing on a Cessna 150.

Rodolphe G Verified Purchase

Challenger Air Filter Cessna

This is my second Challenger Air Filter and for the price I consider it a bargain. The installation and performance of the air filter is as advertised and I will continue to use this product.

Robert J Verified Purchase

Challenger Air Filter Cessna

Easy install. Spacer was included with filter. STC was sent to me within one day via email after I sent in the STC request.

Richard D Verified Purchase

Challenger Air Filter Piper

Our flight school has used these in all of our aircraft for decades. They do what they say, are easy to clean, stand up to the test of time (each one has made it to TBO) and provide less landfill waste than disposable filters!

Specialty F Verified Purchase

Challenger Air Filter C172R&S

Very disappointed when I received an over priced K&N air filter

A & Verified Purchase

Challenger CPE1104 With Grease

Installed in a Cessna 182. Have noticed less fuel burn per hour and a bit more horsepower.

Best.

Great product ! Been a great addition to my C140.

Love the concept of a reusable filter, but in our A36 Bonanza it did not hold up. The flocking bonded to the metal screen goes away over time, rendering the filter unusable. We do have worse than normal weather conditions here in Southeast Alaska, perhaps in a more gentle environment one might have better success.

Challenger Hardware kits are out of stock, Making these air filters Useless

Terrell A Verified Purchase

Challenger Air Filter Cp-1172

No install kits svailible

Freeland A Verified Purchase

Challenger Air Filter Beech

The air filter instructions and STC state it must be maintained in accordance with the Challenger instructions for Continued Airworthiness document 4003 Revision E In the instructions there is a small note that the filter gasket must be replaced every 12 months or 100 hours. The replacement Challenger gasket is more expensive than a Brackett element. The gasket is also hard to install because the instructions state you should install the new gasket after the filter is oiled. They also brag that the filter has no ADs. The gasket is missing a retainer lip which has allowed the gasket to suck into the carburetor. The gasket retaining lip is the subject of three ADs for Brackett filters and required on those installations. Read AD96-09-06. Why was the Challenger filter STC approved with a known defective design that WILL fail after ADs were issued for the same subject to a different manufacturer? The Challenger ICA instructions are in place but the labor to clean and install the filter plus replacing the gasket each time makes it more expensive to maintain than a Brackett or Paper assembly. Plus the Challenger filter assembly has to be mandatory replaced every 25 cleaning cycles. This filter design without a gasket retaining lip should be subject to an AD specific to the Challenger filters and redesign. The STC should be revoked immediately until the redesign occurs. I have removed the Challenger filters from every airplane I maintain because there WILL be an accident.