Here are a few pictures of my pre-OEM Cat filter install. I wanted something extremely heavy duty and capable of withstanding just about anything you can expect on the underside of a heavy-duty truck and didn’t find anything on the market that met my requirements. I used a piece of 3/8” x 6” flat steel for my mounting bracket. It completely protects the bottom of the filter by forming a skid plate underneath it and a rock guard in front of it. I used grade 5 hardware to mount the bracket in the existing holes in the frame in front of the fuel cooler. The filter head uses ½” inlets and outlets so there is no restriction in fuel flow. I used the Cat 1R-0749 filter for it’s large capacity, but the 1R-0750 short filter could also be used. The fuel line is cut in one place and can easily be hooked back together if the need arises. ½” fuel hose slips onto each cut end of the fuel line and heavy duty clamps were used to give the hose an airtight seal. The skid plate is only about 3/4 inch below the frame rail and is not as low as other components under the truck so decreased ground clearance isn't an issue.
Edited by: Mackin