Dee Zee Transfer Tanks: 40-Gallon Narrow vs 55-Gallon Square

Dee Zee truck-bed diesel transfer tanks are offered in square and narrow profiles. A 55-gallon square tank provides more volume, while a 40-gallon narrow tank may leave additional bed-floor space behind the cab. The models below have different aluminum or steel construction and surface finishes; compare the exact MPN and dimensions for your truck.

Square versus narrow rectangular transfer tanks

55-gallon square tanks

Three selected MPNs share a square configuration: 91750 aluminum, DZ91750S white steel and DZ91750SB black steel. Published steel versions measure 24 × 24 × 24 inches.

40-gallon narrow tanks

DZ92556N and DZ92556NB use a long, narrower aluminum configuration for diesel transfer. Confirm the truck-bed width and whether the tank interferes with other equipment.

All five selected tanks include a locking cap and are listed without a transfer pump or built-in tool chest. Do not assume that mounting straps, plumbing, pump and other installation materials are included.

Dee Zee diesel transfer tank size comparison

Capacities are nominal US gallons. Exact exterior clearances, filler access, vehicle payload and compatibility should be confirmed from the current manufacturer drawing before ordering.

MPN Capacity Shape Material / finish Published dimension reference
91750 55 US gal Square Aluminum / Silver Check exact manufacturer drawing
DZ91750S 55 US gal Square Steel / Textured white 24 × 24 × 24 in
DZ91750SB 55 US gal Square Steel / Textured black 24 × 24 × 24 in
DZ92556N 40 US gal Narrow rectangular Aluminum / Silver Check exact manufacturer drawing
DZ92556NB 40 US gal Narrow rectangular Aluminum / Black powder-coated Approx. 9.7 × 56 × 19 in

Truck fit, loading and fuel-use requirements

Check the empty and filled tank weights against vehicle payload and axle limits. Confirm clearance to the cab, bed accessories and tool boxes, and use the manufacturer's installation hardware, grounding and bonding instructions where specified.

Transfer storage is not an automatic auxiliary fuel system

These selected listings identify diesel transfer tanks. Do not assume approval for gasoline, direct plumbing into the vehicle fuel system, or use as a permanently connected auxiliary tank. Follow the current manufacturer instructions and applicable transport and safety regulations for the exact MPN.

Before operation, verify any required venting, grounding, fastening and pumping equipment. A locking fill cap does not mean the pump or fuel-transfer hose is included.

Dee Zee 40- and 55-gallon diesel transfer tanks

Select the right tank profile below for product details and availability.

Other pickup-bed equipment

Dee Zee truck-bed tool boxes and space requirements

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