Dee Zee liquid transfer tanks can differ in shape, capacity and construction despite similar lettering. The 55-gallon square tanks include aluminum and steel models, while the 40-gallon narrow series is offered in aluminum finishes. Match the original tank number and its actual mounting dimensions before selecting a replacement.
Identify the tank body profile
Three selected MPNs share a square configuration: 91750 aluminum, DZ91750S white steel and DZ91750SB black steel. Published steel versions measure 24 × 24 × 24 inches.
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 tank part numbers and construction
The dimensions in this chart are only stated where the selected product's listing provides a reliable reference. Measure the mounting space separately.
| 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 |
Inspect the original installation and tank label
Check the manufacturer's plate or MPN, actual length, width and height, fill cap position, venting, mounting points and any corrosion, damage or leakage. Do not transfer an old tank's fitment to a different model solely because its volume is the same.
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.
Find the matching Dee Zee tank listing
Open the exact MPN for listing information and current availability.
Dee Zee 91750
Aluminum square transfer tank; locking cap included, pump and tool box not included.
Check listing details and availability
Dee Zee DZ91750S
Steel square tank in textured white, with locking cap; mounting hardware and pump sold separately.
Check listing details and availability
Dee Zee DZ91750SB
Black textured steel square transfer tank, separate from the aluminum 91750 version.
Check listing details and availability
Dee Zee DZ92556N
Silver aluminum narrow transfer tank. The slim arrangement differs from the deeper square tank.
Check listing details and availability
Dee Zee DZ92556NB
Black-finished aluminum narrow tank; confirm bed clearance and current dimensional drawing.
Check listing details and availabilityRelated truck-bed storage references
UsedRVParts viewing and pickup are available by appointment in Kelowna.