A strong 50-gallon aluminum fuel tank gives truck owners extra fuel capacity in a format that fits their vehicle and intended transfer method. The RDS Mfg 74736 is the leading general-purpose choice here: it holds 50 gallons, uses aluminum, and is described as DOT approved for transferring diesel, gasoline, or aviation fuel. The lineup also includes a compact-footprint rectangle, cab-rack-mounted storage, auxiliary and toolbox combinations, and a truck-specific replacement tank.
Those differences matter: a tank built for a particular GM truck is not a universal pickup-bed option, and a combo tank may prioritize storage as well as fuel. Compare capacity, dimensions, material, connection method, and vehicle fit before selecting one.
Confirm fuel compatibility, installation requirements, and applicable regulations with the manufacturer before use.
The RDS Mfg 74736 is the best overall match for a buyer seeking a 50-gallon aluminum transfer tank. Its listed specifications confirm 50-gallon capacity and aluminum construction, while the product description says it is DOT approved for transferring diesel, gasoline, or aviation fuel. Its rectangular format suits buyers who want a straightforward pickup-bed transfer tank rather than a vehicle-specific replacement or a tank-and-toolbox combo.
Check the listed 55-by-16-inch dimensions against your available space and confirm installation and fuel-use requirements before buying.
Our Top Picks
Best OverallIts 50-gallon aluminum rectangular design directly fits the search, and the description states DOT approval for transferring diesel, gasoline, or aviation fuel.
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Best RectangleThis aluminum refueling tank offers the requested 50-gallon capacity in a clearly stated 36.25-by-19-by-19-inch rectangular format.
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Best EquippedThe 50-gallon aluminum tank includes a breather cap, sight gauge, and mounting hardware, with listed dimensions and bolt-on installation.
View on Amazon- Best Combo Tank UWS TT-50-COMBO-BLK
- Highest Capacity RDS 71789
Compare the 50-Gallon Fuel Tank Options
| # | Product | Capacity | Material | Weight | Compatible with Vehicle Type | Buy |
|---|---|---|---|---|---|---|
| 1 | 1. RDS Mfg 74736Best Overall | 50 gallons | Aluminum | — | — | View on Amazon |
| 2 | 2. ATI TTR50Best Rectangle | 50 gallons | Aluminum | 52 lb | Car, Truck, Motorcycle | View on Amazon |
| 3 | 3. Mytee Viking 50Best Equipped | 50 gallons | Aluminum | 104 lb | Truck | View on Amazon |
| 4 |  4. UWS TT-50-COMBO-BLKBest Combo Tank | 50 gallons | Aluminum | — | — | View on Amazon |
| 5 |  5. RDS 71789Highest Capacity | 51 gallons | Aluminum | 0.27 g | Car, Truck, Van | View on Amazon |
| 6 |  6. RDS 72747Auxiliary tank-and-toolbox owners | — | — | 0.01 oz | — | View on Amazon |
| 7 |  7. Mytee GM Rear-Fill TankGM medium-duty replacement buyers | 50 gallons | Aluminum | 51.5 lb | Truck | View on Amazon |
| 8 |  8. RDS 74026PCDiesel gravity-feed combo users | 50 gallons | Polyester | 86.4 lb | — | View on Amazon |
Detailed Reviews: Best 50 Gallon Aluminum Fuel Tank
#1 · Best Overall
1. RDS Mfg 74736
- Capacity: 50 gallons
- Material: Aluminum
Best for: Long-bed pickup fuel haulers.
Why it ranks #1: Its 50-gallon aluminum rectangular design directly fits the search, and the description states DOT approval for transferring diesel, gasoline, or aviation fuel.
The 55-inch rectangular profile gives this 50-gallon RDS tank a notably long footprint for carrying fuel in a pickup bed. Its listed DOT approval covers transferring diesel, gasoline, or aviation fuel, making it a flexible option for people who refuel vehicles, equipment, boats, or generators away from a station.
Aluminum construction keeps the tank material explicit, while the 50-gallon capacity supports carrying a substantial reserve for jobs or trips. The 55-inch width and 16-inch height help buyers assess its footprint against available bed space before planning the load. DOT approval for diesel, gasoline, and aviation fuel makes its stated transfer use broader than diesel-only applications; the listed destinations include automobiles, heavy equipment, boats, four-wheelers, and generators.
- 50-gallon capacity
- Aluminum construction
- 55-inch-wide rectangular dimensions
- DOT approved for diesel, gasoline, and aviation fuel transfer
- Its 55-inch width calls for substantial lengthwise bed space.
Skip it if you need a compact footprint; its listed width is 55 inches, while Aluminum Tank Industries TTR50 measures 36.25 inches long.
Pickup owners needing a 50-gallon reserve for transferring multiple listed fuel types will appreciate its capacity and broad DOT-approved fuel use. Check that the 55-inch width suits the available bed space before choosing it.
Full product details
| Brand | RDS MFG INC |
|---|---|
| Capacity | 50 gallons |
| Color | Silver |
| Item Dimensions W x H | 55"W x 16"H |
| Manufacturer | RDS MFG INC |
| Material | Aluminum |
| Model Number | 74736 |
| Dimensions | 55"W x 16"H |
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: This product can expose you to chemicals including styrene which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov |
Listed on Amazon as: RDS Mfg 74736 50 Gal. Rectangular Transfer Tank
View on Amazon#2 · Best Rectangle
2. ATI TTR50
- Capacity: 50 gallons
- Material: Aluminum
- Weight: 52 lb
- Compatible with Vehicle Type: Car, Truck, Motorcycle
Best for: Compact rectangle tank shoppers.
Why it ranks #2: This aluminum refueling tank offers the requested 50-gallon capacity in a clearly stated 36.25-by-19-by-19-inch rectangular format.
At 36.25 inches long, the Aluminum Tank Industries TTR50 has a shorter listed length than many large-capacity rectangular tanks, while still holding 50 gallons. That combination can help buyers considering a refueling tank compare substantial capacity with the dimensions available in a truck or other compatible vehicle.
The aluminum tank measures 36.25 by 19 by 19 inches, giving shoppers concrete dimensions to compare with their intended installation area. Its 50-gallon capacity provides a sizeable stored-fuel supply, while the listed compatibility with cars, trucks, and motorcycles broadens the types of vehicles buyers can consider. At 52 pounds, its stated weight is also useful when planning handling and placement; the supplied information identifies it as a rectangle refueling tank.
- 50-gallon capacity
- Aluminum material
- 36.25 x 19 x 19-inch dimensions
- Listed compatibility with cars, trucks, and motorcycles
- The listed empty tank weight is 52 pounds, a consideration for lifting and placement.
Skip it if you need documented transfer approval for specific fuel types; RDS 74736 lists DOT approval for diesel, gasoline, and aviation fuel.
Choose the TTR50 if its 36.25-inch length and 50-gallon capacity suit your installation area and your vehicle is among the listed compatible types. Its dimensions and 52-pound weight deserve consideration when planning placement.
Full product details
| Brand | Aluminum Tank Industries |
|---|---|
| Capacity | 50 gallons |
| Compatible with Vehicle Type | Car, Truck, Motorcycle |
| Item Dimensions | 36.25 x 19 x 19 inches |
| Item Weight | 52 pounds |
| Dimensions | 36.25 x 19 x 19 inches |
| Manufacturer | Aluminum Tank Industries, Inc. |
| Part Number | TTR50 |
| Material | Aluminum |
| Model Number | TTR50 |
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
Listed on Amazon as: TTR50 Rectangle Refueling Tank – 50 Gallon Capacity
View on Amazon#3 · Best Equipped
3. Mytee Viking 50
- Capacity: 50 gallons
- Material: Aluminum
- Weight: 104 lb
- Compatible with Vehicle Type: Truck
Best for: Cab-rack auxiliary fuel haulers.
Why it ranks #3: The 50-gallon aluminum tank includes a breather cap, sight gauge, and mounting hardware, with listed dimensions and bolt-on installation.
A cab-rack-mounted, L-shaped profile defines this Mytee Products Viking 50-gallon aluminum tank, with bolt-on installation specified for truck use. The package also lists a sight gauge, breather cap, and mounting hardware, giving buyers practical installation and fuel-level details to consider when planning auxiliary diesel storage.
Its 27-3/4 by 26 by 25-5/8-inch dimensions and L-shaped form help buyers evaluate placement on a truck cab rack. Bolt-on installation and included mounting hardware provide concrete installation details, while the sight gauge supports checking fuel level. The listed 2-inch NPT outlet and compatible 2-inch hydraulic hose size help clarify the stated connection sizing. At 104 pounds, its listed weight is important to account for when handling and mounting the tank.
- 50-gallon capacity
- Aluminum, L-shaped construction
- Bolt-on cab-rack installation with mounting hardware listed
- Sight gauge and breather cap listed
- Its listed 104-pound weight is a significant handling consideration.
Skip it if you need a lighter listed tank; Aluminum Tank Industries TTR50 weighs 52 pounds, compared with this model's 104 pounds.
Truck owners planning cab-rack-mounted auxiliary storage can weigh this option's bolt-on hardware, sight gauge, and specified connections against their setup. Account for its 104-pound listed weight and verify the mounting area suits its dimensions.
Full product details
| Brand | Mytee Products |
|---|---|
| Capacity | 50 gallons |
| Compatible with Vehicle Type | Truck |
| Included Components | 1 |
| Item Weight | 104 pounds |
| Manufacturer | Mytee Products |
| Part Number | VK-TNK-T-50 |
| Material | Aluminum |
| Model Number | VK-TNK-T-50 |
Listed on Amazon as: Mytee Products Viking 50 Gallon Aluminum Transfer Fuel Tank Rectangular Auxiliary Diesel Storage for Transportation Truck, Smooth Finish with Breather Cap, Sight Gauge & Mounting Hardware
View on Amazon#4 · Best Combo Tank
4. UWS TT-50-COMBO-BLK
- Capacity: 50 gallons
- Material: Aluminum
Best for: Black combo-tank buyers.
Why it ranks #4: This 50-gallon aluminum option is explicitly a combo transfer tank, offering a toolbox-style alternative to a standalone rectangular tank.
The UWS TT-50-COMBO-BLK pairs a 50-gallon aluminum transfer tank format with a gloss-black finish, giving buyers a dark-finish option in this capacity class. Its combo designation makes it relevant to shoppers seeking a combination-style tank, while the listed dimensions provide a starting point for checking space in a pickup bed.
Its 50-gallon capacity supplies a substantial reserve, and aluminum construction identifies the tank material for buyers comparing metal options. The combo designation distinguishes the product from the listed rectangular transfer-only models, while the 39.94-inch package length and 21.08-inch package width offer some size context for planning. The product is listed in black, so its finish can be considered alongside the intended truck setup; the supplied details do not specify fuel-type approvals.
- 50-gallon capacity
- Aluminum construction
- Combo transfer tank designation
- Gloss-black color
- The supplied details do not identify which fuel types are approved for transfer.
Skip it if you need stated DOT approval for diesel, gasoline, or aviation fuel; RDS 74736 explicitly lists approval for those fuels.
This UWS model suits buyers seeking a black, aluminum combo transfer tank with 50-gallon capacity. Its listed details leave fuel-type approvals unspecified, so consider that boundary when your planned transfer use depends on documented fuel compatibility.
Full product details
| Brand | uws |
|---|---|
| Capacity | 50 gallons |
| Color | Black |
| Included Components | Combo Transfer Tank Gloss Black 50-Gallon Combo Aluminum Transfer Tank |
| Item Dimensions W x H | 16.05"W x 16.05"H |
| Manufacturer | UWS/United Welding Services |
| Material | Aluminum |
| Model Number | TT-50-COMBO-BLK |
| Dimensions | 16.05"W x 16.05"H |
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
Listed on Amazon as: UWS TT-50-COMBO-BLK Gloss Black 50-Gallon Combo Aluminum Transfer Tank
View on Amazon#5 · Highest Capacity
5. RDS 71789
- Capacity: 51 gallons
- Material: Aluminum
- Weight: 0.27 g
- Compatible with Vehicle Type: Car, Truck, Van
Best for: Auxiliary-fueling combo seekers.
Why it ranks #5: Its aluminum combo design holds 51 gallons, and the description says gasoline auxiliary fueling is allowed when pumped from the tank's top.
This RDS combo pairs a 51-gallon aluminum tank with a toolbox format, offering one more gallon of stated capacity than a 50-gallon target. Its auxiliary-fueling information distinguishes diesel gravity feed from gasoline use, which is allowed when siphoned from the tank top with an electric fuel pump.
The 50 by 20 by 19-inch dimensions give pickup owners a clear starting point for checking bed space, while the 51-gallon capacity provides substantial onboard storage. Its combo tank-and-tool designation brings two functions into the same listed product. For auxiliary use, the description says diesel can gravity-feed from the bottom; gasoline requires top siphoning with an electric fuel pump. That method difference matters when selecting equipment and planning the transfer workflow.
- 51-gallon capacity
- Aluminum construction
- Tank and toolbox combo designation
- Listed diesel gravity-feed and gasoline top-siphon methods
- Gasoline auxiliary fueling requires top siphoning with an electric fuel pump.
Skip it if you want gasoline transfer without the listed top-siphon electric-pump method; RDS 74026PC lists DOT approval for gasoline transport.
Choose this RDS combo if you want 51 gallons, toolbox functionality, and auxiliary fueling with the stated methods. Diesel gravity-feeds from the bottom, while gasoline use requires top siphoning with an electric fuel pump.
Full product details
| Brand | RDS MFG INC |
|---|---|
| Capacity | 51 gallons |
| Compatible with Vehicle Type | Car, Truck, Van |
| Included Components | Fuel, System, Fuel |
| Item Dimensions | 50 x 20 x 19 inches |
| Item Weight | 0.27 g |
| Dimensions | 50 x 20 x 19 inches |
| Manufacturer | RDS MFG INC |
| Part Number | 71789 |
| Manufacturer Warranty Description | Manufacturer Warranty |
| Material | Aluminum |
| Model Number | 71789 |
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: This product can expose you to chemicals including styrene which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov |
Listed on Amazon as: RDS MFG INC RDS 71789 Rectangular Auxiliary/Transfer Combo Fuel Tank and Tool – 51 Gallon Capacity
View on Amazon#6
6. RDS 72747
- Weight: 0.01 oz
Best for: Auxiliary tank-and-toolbox owners.
Why it ranks #6: This 51-gallon auxiliary tank and toolbox combo suits buyers wanting more than 50 gallons, though the supplied specifications do not list its material.
A 51-gallon auxiliary diesel tank and toolbox combination is the core proposition of this RDS model, providing extra capacity alongside toolbox functionality. Its listed 50-by-20-by-21.75-inch overall dimensions give pickup owners useful measurements for comparing the unit with their available bed space and planned auxiliary setup.
The 51-gallon capacity adds a substantial auxiliary reserve, and the rectangular profile with stated overall dimensions helps buyers assess how the combo may occupy a pickup bed. The toolbox pairing serves buyers looking to combine fuel storage and tool storage in one unit. The description says an RDS Diesel Install Kit, sold separately, connects the auxiliary tank to a factory tank; installation planning therefore needs to account for that additional component rather than assuming it is included.
- 51-gallon auxiliary capacity
- Tank and toolbox combo
- Rectangular shape
- Description specifies connection to a factory tank using an RDS Diesel Install Kit
- The RDS Diesel Install Kit needed to connect to a factory tank is sold separately.
Skip it if you need a listed tank with the diesel install kit included; this model's description says the kit is sold separately.
This RDS combo suits pickup owners seeking auxiliary diesel capacity plus toolbox functionality and willing to plan for the separate install kit. Compare its 50-by-20-by-21.75-inch dimensions with the available bed space.
Full product details
| Brand | RDS MFG INC |
|---|---|
| Item Weight | 0.01 ounces |
| Item model number | 72747 |
| Manufacturer | RDS |
| Part Number | 72747 |
| Model | 72747 |
| Dimensions | 52 x 21.75 x 21 inches |
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: This product can expose you to chemicals including styrene which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov Proposition 65 Warning for California Consumers WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
Listed on Amazon as: RDS, 51 Gal Auxilary Aluminum Combo Fuel Tank and Toolbox Rectangle Shape Model# 72747
View on Amazon#7
7. Mytee GM Rear-Fill Tank
- Capacity: 50 gallons
- Material: Aluminum
- Weight: 51.5 lb
- Compatible with Vehicle Type: Truck
Best for: GM medium-duty replacement buyers.
Why it ranks #7: It is an aluminum 50-gallon replacement tank for specified Chevrolet Kodiak and GMC Topkick models, not a general-purpose pickup-bed transfer tank.
Vehicle-specific compatibility is the defining feature of this 50-gallon Mytee Products rear-fill tank: its listing names Chevrolet Kodiak and GMC Topkick truck applications. The aluminum, driver-side step-tank format and rear-fill description make it a replacement-oriented option for buyers matching those details to a listed medium-duty truck.
The 50-gallon capacity provides a substantial replacement tank volume, while aluminum construction specifies the material. Its driver-side step-tank description and rear-fill identification help buyers compare the configuration with the listed truck arrangement. Compatibility details name Chevrolet Kodiak and GMC Topkick families, among other Chevrolet and GMC C-series applications, and the listing identifies OEM replacement references. Those specific vehicle and replacement details make application matching central to the purchase decision.
- 50-gallon capacity
- Aluminum construction
- Rear-fill, driver-side step-tank configuration
- Compatibility listed for Chevrolet Kodiak and GMC Topkick applications
- Compatibility is limited to the specific listed Chevrolet and GMC truck applications.
Skip it if you need a general-purpose pickup-bed transfer tank; RDS 74736 is listed for transferring fuel from a pickup bed.
This Mytee tank is for owners replacing a rear-fill, driver-side step tank on a compatible listed Chevrolet or GMC truck. Match the vehicle application and configuration carefully; it is not presented as a universal transfer tank.
Full product details
| Brand | Mytee Products |
|---|---|
| Capacity | 50 gallons |
| Compatible with Vehicle Type | Truck |
| Item Weight | 51.5 pounds |
| Manufacturer | Mytee Products |
| Part Number | MPNWA911-050-18DR |
| Manufacturer Warranty Description | 18 Month Warranty |
| Material | Aluminum |
| Model Number | MPNWA911-050-18DR |
#8
8. RDS 74026PC
- Capacity: 50 gallons
- Material: Polyester
- Weight: 86.4 lb
Best for: Diesel gravity-feed combo users.
Why it ranks #8: Although it holds 50 gallons and is described as a DOT-approved combo, its specifications list polyester rather than aluminum, missing the core material requirement.
A stated diesel-only gravity-feed capability sets the RDS 74026PC apart for buyers planning a diesel transfer setup. This 50-gallon model combines a transfer tank and toolbox, and its listed DOT approval covers transporting diesel, gasoline, or aviation fuel, giving the transport use broader stated coverage than its gravity-feed function.
The toolbox-and-tank combo joins storage and fuel carrying in one pickup-bed product, which may suit buyers who want both functions together. Its 50-gallon capacity provides a substantial reserve, and the stated dimensions of 20 by 19 by 48 inches help assess the footprint. DOT approval is listed for transporting diesel, gasoline, or aviation fuel, but gravity feed is specified for diesel only, an important distinction when planning how fuel will be dispensed.
- 50-gallon capacity
- Tank and toolbox combo
- DOT approved to transport diesel, gasoline, or aviation fuel
- Gravity feed specified for diesel
- Gravity feed is limited to diesel, despite the broader listed transport approval.
Skip it if you need gasoline auxiliary fueling by top siphon and electric pump; RDS 71789 lists that method for gasoline.
The 74026PC fits pickup owners wanting a toolbox-and-tank combo and diesel gravity feed, with broader listed approval for transporting other fuels. Keep its diesel-only gravity-feed limitation distinct from transport approval.
Full product details
| Brand | RDS MFG INC |
|---|---|
| Capacity | 50 gallons |
| Color | Black |
| Item Weight | 86.4 pounds |
| Manufacturer | RDS |
| Material | Polyester |
| Model Number | 74026PC |
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: This product can expose you to chemicals including styrene which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov Proposition 65 Warning for California Consumers WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
Listed on Amazon as: RDS MFG INC RDS 74026PC 50 Gal Combo 20.0X19.0X48.0 Powder Coat Black
View on AmazonAvoid confusing a transfer tank with an auxiliary tank
A transfer tank and an auxiliary tank are not interchangeable by default; check the stated fuel-transfer method and required accessories before purchase. The RDS Mfg 74736 is described as a tank for transferring fuel from a pickup bed to other equipment, while the RDS 71789 and RDS 72747 are described as auxiliary tank combos that connect to a vehicle’s factory tank. The 71789 listing says gasoline auxiliary fueling is allowed if fuel is siphoned from the top using an electric fuel pump; it also describes gravity feed for diesel.
The 72747 notes that an RDS Diesel Install Kit is sold separately. Those details mean capacity alone does not establish compatibility with your vehicle’s fuel system.
Verify the intended fuel, transfer arrangement, installation kit, and vehicle requirements with the manufacturer. Do not assume that a tank’s description of one fuel or feed method covers every configuration.
Check the fit before choosing a tank format
A 50-gallon rating does not tell you whether a tank will fit your truck or leave room for other cargo. The listed dimensions vary substantially: the RDS Mfg 74736 is given as 55 inches wide and 16 inches high, while the ATI TTR50 is listed at 36.25 by 19 by 19 inches. The Mytee Viking 50 is an L-shaped, cab-rack-mounted tank measuring 273⁄4 by 26 by 255⁄8 inches, so its mounting format differs from a conventional rectangular bed tank.
The Mytee GM Rear-Fill Tank is narrower in purpose still: the listing identifies particular Chevrolet and GMC truck models and a driver-side rear-fill configuration. Measure the intended mounting area, check clearance for caps and fittings, and verify vehicle fit before ordering.
Listings may present dimensions in different formats, so confirm the full measurements and installation details for the specific model.
How to Choose a 50-Gallon Fuel Tank
Capacity and usable headroom
Choose capacity based on the amount of extra fuel you actually need and the tank’s intended use. Most listings here specify 50 gallons, including the RDS Mfg 74736, ATI TTR50, and Mytee Viking 50; the RDS 71789 and RDS 72747 list 51 gallons. That one-gallon difference is small, so tank fit and transfer arrangement may matter more than nominal capacity.
Check whether the product is a transfer tank, an auxiliary tank, or a replacement tank before comparing gallon figures: those formats serve different purposes. A buyer wanting a general-purpose 50-gallon transfer tank should favor the RDS Mfg 74736 or ATI TTR50.
Someone seeking a little more stated capacity in a combo format can consider the 51-gallon RDS 71789 or RDS 72747.
Dimensions and mounting format
Match the tank’s measurements and mounting style to the space and vehicle where it will be installed. The RDS Mfg 74736 is listed as 55 inches wide and 16 inches high; the ATI TTR50 measures 36.25 by 19 by 19 inches. The Mytee Viking 50 measures 273⁄4 by 26 by 255⁄8 inches and is described as L-shaped and cab-rack-mounted, while the Mytee GM Rear-Fill Tank is a driver-side replacement design for specified trucks.
These are not equivalent layouts even when capacity is similar. Buyers with a conventional open bed should compare the rectangular models against their available footprint.
Buyers with a rack setup or a named truck model should prioritize the matching mounting format and confirm clearance, connection access, and fit before ordering.
Fuel system and included equipment
Look for a stated transfer method and the fittings or accessories needed for your intended setup. The Mytee Viking 50 lists a breather cap, sight gauge, and mounting hardware, plus bolt-on installation and a 2-inch NPT outlet. RDS describes the 74736 as a transfer tank for diesel, gasoline, or aviation fuel.
By contrast, the RDS 71789 describes auxiliary fueling and specifies an electric pump for gasoline siphoned from the top; the RDS 72747 says its diesel install kit is sold separately. A buyer wanting listed accessories in the tank package may prefer the Viking.
Buyers connecting an auxiliary tank to a vehicle should check the appropriate kit and fuel-specific instructions. Confirm compatibility and safe installation with the maker rather than inferring it from capacity or product category.
Which 50-Gallon Fuel Tank Should You Choose?
For a general-purpose, 50-gallon aluminum transfer tank, choose the RDS Mfg 74736: it is a rectangular aluminum model described as DOT approved for transferring several fuel types. Choose the ATI TTR50 if its 36.25-by-19-by-19-inch rectangular footprint better suits your available space. The Mytee Viking 50 fits buyers seeking an L-shaped, cab-rack-mounted tank with a sight gauge, breather cap, and mounting hardware.
For a tank-and-toolbox combination, consider the UWS TT-50-COMBO-BLK or the 51-gallon RDS 71789; the RDS 72747 is another 51-gallon combo, but its supplied specifications do not state material. The Mytee GM Rear-Fill Tank is for its listed Chevrolet and GMC truck fitments, not a universal transfer setup.
Skip the RDS 74026PC if aluminum construction is essential: its specifications list polyester.
Frequently Asked Questions
What permits or regulations apply to carrying a fuel transfer tank on a public road?
Requirements depend on the fuel, tank, vehicle, and location. Before carrying fuel on public roads, check applicable federal, state, and local rules and confirm the tank’s approval and intended fuel use. The RDS 74736 description says it is DOT approved for transferring diesel, gasoline, or aviation fuel; verify current requirements for your setup.
Which fittings, pump, or installation kit are required to transfer fuel safely?
The required equipment depends on the tank’s outlet, the fuel, and your transfer method. Check the product documentation for compatible fittings and pump requirements, and use components intended for that fuel. The Mytee Viking listing includes mounting hardware, a breather cap, and a sight gauge; do not assume other listed tanks include a pump or installation kit.
How should a fuel tank be secured and maintained to reduce leaks and corrosion?
Follow the manufacturer’s installation instructions and use appropriate mounting points and hardware so the tank cannot shift during travel. Inspect the tank, fittings, seals, and mounting hardware regularly for looseness, damage, or leaks. Keep surfaces clean and address corrosion or deterioration promptly; follow the maker’s care guidance for the tank’s material and finish.
How can I tell whether a tank will fit my truck bed or mounting location?
Measure the available space, including clearance for the fill point, fittings, and any surrounding equipment, then compare it with the listed dimensions and shape. The RDS 74736 is listed as 55 by 16 inches, while the ATI TTR50 is 36.25 by 19 by 19 inches. Confirm mounting compatibility before purchase.
When should I choose a tank-and-toolbox combination instead of a standalone tank?
Choose a combination when you want storage integrated with the tank and its dimensions suit your vehicle and work needs. The UWS TT-50-COMBO-BLK and RDS 71789 are listed as tank-and-toolbox combinations; the RDS 72747 is also a 51-gallon combo. Check each listing for material, fit, and installation details before deciding.
Final Words
For a general-purpose 50-gallon aluminum transfer tank, the RDS Mfg 74736 is the clearest match in this lineup: it is listed as aluminum and 50 gallons, and its description says it is DOT approved for transferring several fuels. Check its 55-by-16-inch dimensions and confirm your installation and fuel-use requirements. Choose another option when its footprint, vehicle fitment, or toolbox combination better matches your setup.