RDP Fuel Tank Sump w/ Integrated Return For Diesel Truck AirDog FASS For Dodge Cummins GM Duramax Ford Powerstroke

This wasn't an easy installation, but it wasn't difficult. I installed the sump in a 2013 Chevrolet 3500 long bed. I didn't cut completely through the tank with the hole saw. Left maybe 1/32nd or less and then just with a knife. I had very little pieces in the tank to clean up. The hole I cut was in front of the stock unit and about 1 1/2 inches towards the outside of the tank. The arm for the stock fuel sending unit come forward and by cutting the hole off of the center of the tank I hand no interference with the arm. I did do some deburring inside the sump to clean up the threaded areas. There were a few fragments that could have come loose. Other than that the machining and fit was perfect.

Great product but hole saw is for plastic tanks only, had to buy a metal cutting saw for my application. But works perfectly

The sump pickup was easy to install and price was really good compared to name brand ones. It it a bit bulky and obviously hangs lower than the fuel tank about 1”. The design is good but you may want to mark which side is feed and return. I installed it on a 2004 Ford F-250 and decided to modify my fuel tank skid plate to keep the protection (see pics). Take your time cutting the hole with the supplied hole saw. The more precise your cut, the better the fit. Be sure to clean the surface of the tank, the sump o-ring slots, and mounting face (I used a wire brush on the inside of the sump). For extra leak protection, I used teflon tape on the two bolts that hold the upper and lower parts together. Leaking from the supplied brass fittings was inevitable since there is no flange or flare. The first time I put it all together, I only put a few gallons of fuel in the tank to check for leaks. Yes, it leaked about a drop every minute or so from the fittings with just teflon on the brass threads. So, I drained the fuel out and and removed them. The second time was successful, I wrapped the threads in teflon, put a thin o-ring on the fittings then cleaned the sump threads well and applied Permatex (gasket maker) BLACK OIL RESISTANT RTV lightly inside and on the brass threads. Once the fittings were tight, I packed RTV over all of the fittings and let it sit for several hours to cure before putting fuel back in. No more leaks! I believe cutting a chamfer to allow an o-ring to seat would solve the issue but, a flat rubber or teflon washer would probably do well too.

1k miles and no leaking, used Teflon tape on the fittings and it’s doing just fine. 3” hole saw they send couldn’t cut its way out of a cardboard box. Other than that, overall the product is great.

Installed and works as it should. It went together easy although the provided hole saw is a piece of crap as stated in other reviews, so make sure you have your own before you have a bad day trying to use it. Several months in and it has held up great with no issues.

This would be 5 stars but, I remove 2 for having the pipe thread on the suction side over cut. The fitting bottomed out and the fuel leak was approx 1 drop every 15 seconds. I ended up using fuel grade tape with 8 complete wraps. to keep it from leaking. Everything else was a breeze. I would recommend, while cutting the hole in the tank, to clean the hole saw frequently. There is no chip relief on saw. Unlike other sumps, the back plate is easy to install and line up with body using the riser as a guide. Quality control needs to be better.

Worked great, hole saw worked fine on plastic tank, no leaks from tank or fittings. Great product

Ight, lets be real. Go ahead and get you a 3" hole saw. Like others said, the one included wouldnt cut through a wet napkin. But the sump itself is great quality. I had to debur some of it but even the highest quality stuff comes the same way.