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Message: [QUOTE="TARM, post: 422931, member: 578"] I have run one without issue. But to be 100% honest I have not run it enough to say its OK with 100% confidence. I also would want to do some dirt roads. Now there 7 layer I would be feel good with. I am planning on using one as I am running the GT42 which is a 6" comp port and I do not want to cause the loses in spool up that come from reducing the intake to 4" They make one thats almost perfect the only thing I do not like is that to get the pg7 you can not get it with inverted top with media in it. Its has to be a closed top. But still you are looking at huge surface area and because of the cone shape you get more even flow over the whole filter instead of most going thru the lower 1/2 like you do with the Donaldson straight wall. Its filter Part #: 72-90021 Flange: 6" Flange lip: 1" Base Diameter: 9" Height: 9" Top Diameter: 7" Still for the money and awesome filter perf the Donaldson is really hard to beat. I just wish it came with a 6" opening. Bet I could mod one to make it happen though. I need to look at the larger ones they have as I have more room than most do in there as my batteries are going to the passenger side frame rail. [/QUOTE]

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