Review on KN 170 Harley Davidson Performance Filter by William Dean

What can I say, it's an oil filter. If you buy this you're at least halfway through oil changes. I only use K&N now. But don't be fooled by the fact that the small screw can and will end up loosening if the filter is overtightened. I had to rip out the Vise Grips to finally get them off. But I bought another one. And will probably continue to buy them. K&N has never failed me with any of their products.