Donaldson Blue® 6637 Intake Filter - Ford 7.3L Powerstroke
I've read about these a little bit and thought I'd finally give one a shot after reading the positive reviews on their site now that they've been out a little while. I'm not one to buy into marketing claims that much, especially on something like air filters, but it seems to be an upgrade over the standard 6637 so thought I'd swap one in there. Apparently, it's supposed to flow "37% more air" over than the standard 6637. It's a proprietary filter built for Riff Raff that you can't buy anywhere else. Only time will tell if there are any noticeable "differences"- (not expecting there to be much) but just wondered if anyone else had compared the two before.
I've read about these a little bit and thought I'd finally give one a shot after reading the positive reviews on their site now that they've been out a little while. I'm not one to buy into marketing claims that much, especially on something like air filters, but it seems to be an upgrade over the standard 6637 so thought I'd swap one in there. Apparently, it's supposed to flow "37% more air" over than the standard 6637. It's a proprietary filter built for Riff Raff that you can't buy anywhere else. Only time will tell if there are any noticeable "differences"- (not expecting there to be much) but just wondered if anyone else had compared the two before.

