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Auxiliary Tank Question

lawnspecialties
Explorer
Explorer
My former F450 (2011 long bed), I had a 90 gallon auxiliary tank installed by my dealer. It was a rectangular shape with a small tool area going across the top. So it was flat across the top and a little over 19" tall so it was just about flush with the top of the bed.

I have a new F350 (long bed) and plan to do the same within the next two weeks. But I noticed the 90 gallon tanks now come in two dimensions: 19.5" tall or 22.25" tall. The 19.5" tall model is 57" long and 31" wide. The 22.5" model is 57" long but only 25" wide.

So basically I can stay with a flush top to the bed of the truck or extend about 3"-4" above the top of the bed and save 6" of room in the bed.

I prefer to save the room in the truck bed by going with the 25" width model but clearance for a fifth wheel concerns me. We don't have a 5er right now so its no big deal. But one of the reasons I bought this particular truck was it had the fifth wheel prep package. That's how sure I am we'll get a 5er once I decide to act my age and stop racing ATVs.

Its a long bed so that helps. But how big of a concern will it be to have that 3"-4" sticking above the bed? Will that height come into play when making tight turns? I say I'll always be careful but it only takes one mistake to totally screw up the front nose of a camper if I make a mistake.
7 REPLIES 7

shepstone
Explorer
Explorer
Dave H M wrote:
Are you going to do your own install? I know how to get exactly what you want.

Do tell
2017 F350 Ruby Red Super Cab Dually 6.7 3.55 gears. B&W Companion 25K. BackRack. Gatorback mud guards. AUX65FCBRG aux tank. 2021 GD 380fl
2010 GMC Savanna 3500 extended 6.0

lawnspecialties
Explorer
Explorer
No. I'm having my Ford dealer do it. They've done one before for me, did a good job, and its reasonably priced. Not to mention it helps if any warranty issues were to arise.

Dave_H_M
Explorer II
Explorer II
Are you going to do your own install? I know how to get exactly what you want.

lawnspecialties
Explorer
Explorer
Roger10378 wrote:
The other thing you have to watch is how much of the window it obstructs. That extra 3 or 4 inches could obstruct you view of the hitch when you are trying to hook up.


Good point. I hadn't thought about that. Thinking back to our 5er days, I think you are correct. It will most likely block my view. Dang. ๐Ÿ™‚

Roger10378
Explorer II
Explorer II
The other thing you have to watch is how much of the window it obstructs. That extra 3 or 4 inches could obstruct you view of the hitch when you are trying to hook up.
2005 Cardinal 30TS
2007 Chevy 2500HD D/A

lawnspecialties
Explorer
Explorer
Thanks Biscuit. The 6" clearance is what I need opinions on. Having more room in the bed is worth it but again, poking a whole in the nose of a fifth wheel would ruin a trip.

Old-Biscuit
Explorer III
Explorer III
Minimum bed rail clearances is typically 6" and even with 6 " some contact can happen when making off level turns.

Tight maneuvers forward/reverse 5vr overhang can swing across forward area of truck bed.
Is it time for your medication or mine?


2007 DODGE 3500 QC SRW 5.9L CTD In-Bed 'quiet gen'
2007 HitchHiker II 32.5 UKTG 2000W Xantex Inverter
US NAVY------USS Decatur DDG31