40-Gallon Toolbox/Tank Combo

The KSH 40-Gallon Toolbox/Tank Combo, the smallest gallon capacity of our standard sizes, is designed to provide the largest toolbox space while still providing a significant increase to your fuel capacity in a short bed Dodge. 

It is available in the standard and low profile models. 

The Low Profile and Standard Model tanks are made of .125 gauge mill finish aluminum while the toolbox side is made of .063 aluminum diamond plate and the lid of .125 aluminum diamond plate. Other options are available upon request as outlined below.

KSH Auxiliary Tanks are made with two baffles to control fuel sloshing and to provide added stability.  The Standard Model is designed to be bed height so it will not interfere with the operation of a 5th wheel. The Low Profile Model is designed to be used with trucks that have special requirements such as tonneau covers and roll top covers.

The KSH 40-Gallon Toolbox/Tank Combo is designed to work with diesel models of short bed Dodge trucks. The tank will work with a variety of our installation kits, as well as our competitors. Click here for information on our kits. Information on an external pump kit that would allow you to fill your tank or other vehicles from the auxiliary tank is also available by clicking above.

The above picture shows a 40-gallon Toolbox/Tank Combo for a short bed Dodge. The customer chose to have the unit powder coated black.


40-Gallon Toolbox/Tank Combo Dimensions

ModelLengthWidthHeightToolbox Depth
Standard60"20"Bed Height*9-1/4″
Low Profile60"20"17-1/4"*7-1/4″

Options:  KSH offers all tanks made out of polished aluminum, in your choice of diamond plate or mill finish at the base price. We offer powder coating of any tank for an additional fee. Examples of powder coated tanks can be seen by visiting our Photo Gallery. Locking gas caps are also available.

See More Pictures Here

Get a quote below.


** Please Note: the lid of the box will add an additional 1.5 inches from side to side from the dimension of what the tank is. Make changes to the tank size if necessary.
Required Vehicle Information:

If you have a cover specify type and dimensions below

Height between lowest point of tonneau (including hardware) and bed of truck

Distance between rails for cover if applicable

Distance between inside brackets for cover if applicable