I decided a few months ago I am tired of messing with the factory fuel filter housing. It’s not easy to remove the lines when I need to, and even with new hardware it still leaks at the drain valve sometimes. I have a large auxiliary trans cooler/fan mounted on the frame rail as well as the Raptor 4G so I don’t really have room for a rail mounted filter. While weighing my options I came across this from GDP https://www.glacierdieselpower.com/collections/fuel-filter-systems-vehicle-specific/products/glacier-diesel-power-1998-5-2002-dodge-ram-5-9-cummins-mk-7-big-line-kitheated-mk79852-blkh

 

It is pricey, but it retains use of the OE WIF plug and the fuel heater. It mounts in the factory location, uses a spin on 7 micron filter, and moves the outlet from the bottom to the top side of the filter. Probably gonna go with it, can’t find any flaws in their design-can you? 

Problem it will not acquire heat from the intake manifold like the OE fuel filter does. This is a bonus come winter time so your dependent of electric heaters for longer than needed. Once the housing warms then the heater shuts off. 

Why wouldn’t it retain heat from the intake manifold? It’s in the exact same spot as the OE housing? Or are you saying it will retain less heat because the filter isn’t contained inside a thicker housing? 

I went ahead with this and I gotta say it’s pretty awesome. Retains complete oem functionality, basically a drop in replacement, just better. GDP was really really great to work with. Again, the thing is $500, and honestly I understand why they have it priced there. It’s well designed, well thought out, robust, and they’re a for-profit company. I called them bc I wanted to see if they offered the unit without the big line kit as I already have the 1/2” lines and fittings. They don’t, but they were really cool and let me order each individual part and I just bolted them together myself. That cut the cost to a more reasonable $300 or so. I told them they should offer this option, but for now I think they just want to offer a drop in replacement. It’s worth calling and asking though if you’re interested. Have to emphasize how professional GDP was, most of the venders we deal with on these trucks are absolute goons, but GDP earned my respect on this one.