This airbox cover was a complete disappointment. It was extremely hard to thread the bolt as there is no guide to keep the bolt straight unlike the filter frame. The airbox cover is also very easy to over-tighten for this same reason. After I used this for the first and last time I noticed that I had bent the frame of my intake. As you tighten the bolt there is nothing for the frame to brace against and let you know that it's tight. Lastly, the gasket around this airbox cover was flimsy and came off easily which doesn't inspire confidence in it's sealing ability. I think I'll try the Twin Air airbox cover next.