What's the diff?

[furious_blue_imp]

I kind of like the little nut on top of the K&N

have a welded on nut is handy.

Since these use once style filters only have to come off once, I'm OK just using a universal 'grip and destroy if necessary' plier type filter wrench. For the tougher jobs, usually the ones where the factory installed the filter, getting it off usually involves deforming it from the tight grip.

After that I only tighten the new one the required amount and those are easier to spin off without having to grip so hard.