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Product Description
These reusable K&N Filtercharger air filters outflow any other filter--up to 900 cfm--for power gains of up to 15 HP. They use a surgical cotton fabric soaked in oil as their tack barrier. Sandwiched between an aluminum screen wire, the holes in the cotton catch tumbling air and straighten it out. Since air moving in a straight line flows faster, the filter actually improves airflow. They can be covered by up to 1/4 in. of debris before air restriction makes cleaning necessary. The filters come pre-oiled, and many are available as a direct fit for your application.
Product Details
- Amazon Sales Rank: #6385 in Automotive
- Brand: K&N
- Model: E-9233
- Dimensions: 4.38" h x 14.13" w x 14.13" l, 6.00 pounds
Features
- High air flow with excellent filtration
- Designed to increase horsepower and acceleration
- Fits into existing factory air box, no cutting or fitting is required
- Filters are washable and reusable and are backed by K&N's million-mile limited warranty
Customer Reviews
Easy to install, seems to work
I purchased this because the manufacturer claims that you won't have to clean it for 50,000-100,000 miles, as opposed to the paper air filters which I have to change every 10k. The manufacturer actually does not claim that you will have better gas mileage or more power, but I found that it has boosted the HP in my 2001 Nissan Frontier 4cyl a bit - I always had trouble accelerating up a particularly daunting hill after a stop sign, but now I have no trouble. My mpg did not seemingly change. One difference you'll notice with this filter is that it's a good deal stiffer and heavier than a paper filter, and you have to run a bead of grease (provided) around the inside of the housing in order to get a proper seal. Bottom line, base your decision on the cost of replacing your paper filter multiple times vs. the one-time cost of the K&N, and consider it a bonus if you get a performance or mpg boost.
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