K&N to 6637 Questions

[Broncoboy79]

Well my truck had this K&N intake on it when I bought the truck. I hear everybody talking about how much better the DIY kit w/6637 filter is. Anyway I was wondering if it were possible for me to just throw a 6637 filter on the K&N system? Or are there some contradictions you guys would know of?

[ryandamo]

buy a 6637 filter, worse case scenario, it doesnt fit and you have to get a 4 inch piece of exhaust pipe to make it fit. k&n makes great filters but there not for high compression diesels, the let too much fine particulate in.

[DJM]

You can run a K&N the stock type K&N filters were the bad thing in the OBS trucks just cause they didn't seal right I mean cmon they use k&n filters in all kinds of race setups even Baja trucks use them and the stuff they do is dusty if your worried about it buy a outerwear to put on it end of story, But if you do want to go with the 6637 like said before might just have to get a 4" piece of pipe can't go wrong either way in my book. I personally have had my K&N cone filter since I bought the truck new and have 154k on it now and see now pitting or dirt or dust in the intake tube and I drive in prety dusty conditions and out on sand dunes a bit.

[GM Duraturd]

A 6637 fits in the K&N kit.