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I also have the 70-5016 as shown in this review, the rubber coupler failed on me. This is the result of using their rubber coupler:
I took a look at the coupler in this review, it looks like it's using the older type rubber coupler, the same as the one I had.
My F-150 took in raw, nasty, unfiltered air for some time until I got Check Engine lights come on. The engine was stauling while driving as well.
From my research, it looks like S&B switched to a newer coupler that is not a cheap rubber and is reinforced. That is what the new one looks like that S&B sent me:
I hope this helps S&B owners out there who installed this some time ago and had this rubber coupler so you don't experience the same problems I had.
Contact S&B and ask them to send you the newer coupler to replace the cheap rubber coupler if you also have it.
