KN 33-2311 Replacement Air Filter

KN 33-2311 Replacement Air Filter Review

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I bought this for my 2007 Chevy Cobalt 4D.br /br /The filter has a great built quality to it and looks like it will trap a ton of dirt. It fit perfect in the air filter camber without having to squeeze it in. The outside edges are rubber so it keeps a great seal. I noticed a difference after taking out the stock and inserting this filter. My car felt like it had a little more punch and my MPG on highway went up by 2 to 3. I mostly drive highway, so it's a plus for me.br /br /Keep in mind that this filter must be cleaned at 50,000 miles. Which is a lot but you must buy the filter cleaner which is additional cost. For me, this is still the best way to go. The stock filter cost about this will certainly pay for itself with all the times you would have to replace the stock or cheaper ones.

KN 33-2311 Replacement Air Filter Feature

• A high-flow, washable filter that delivers the maximum amount of air possible into your engine while providing superior filtering
• Multiple layers of cotton fabric sandwiched between pleated aluminum screen capture airborne dirt particles
• Improves horsepower and torque
• Emission legal in all 50 states, will not void manufacturer's warranty
• Filters can be cleaned over and over, and are backed by a million mile limited warranty

KN's lifetime replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. The air filter is custom-designed to fit into your existing factory air box and the drop-in design means adding performance is simple. The unique design of the air filter features multiple layers of cotton fabric which capture airborne dirt particles. The filter is washable and reusable and can be easily cleaned and oiled. It lasts up to 50,000 miles before cleaning is needed.

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Customer Reviews

Buy a KN - Michael Pattison Jr. - Vallejo, CA
I bought this and seen an instant difference in the sound of my '05 Chevy Cobalt. I've noticed a small increase in gas mileage also. I highly recommend everyone to replace their old filter with a KN.


Apr 24, 2010 18:52:07