A strong 120-gallon fuel tank choice delivers the right capacity in a format that matches your vehicle and refueling needs. For a compatible Kenworth truck needing a replacement tank, the Mytee Products 120 Gallon Rear Fill Tank is the closest match to the keyword’s exact capacity and use case. Buyers who need portable fuel transfer instead can consider options ranging from 116 to 128 gallons, with 12V pumps and hoses on several models.
Those portable tanks are not direct substitutes for an installed truck tank, so confirm how the tank will be secured and used before choosing. This roundup compares listed capacity, materials, weight, dimensions where provided, and included transfer features.
Check vehicle fitment and fuel compatibility against the manufacturer’s current documentation before purchase.
The Mytee Products 120 Gallon Rear Fill Tank is the strongest match for buyers searching for a 120-gallon truck fuel tank: it has a listed 120-gallon capacity, aluminum construction, and specified fitment for multiple Kenworth models. Its rear-fill, passenger-side design and 24.5-by-60-inch size make fitment details essential. If you need a portable transfer tank rather than a truck replacement, consider the portable models below; their listed capacities range from 116 to 128 gallons, and several include 12V pumps.
Our Top Picks
Best OverallIts listed 120-gallon aluminum tank is a direct capacity match, with rear-fill passenger-side design and fitment details for several Kenworth models.
View on Amazon
Best Pump DetailsThe 128-gallon polyethylene tank includes a 12V pump, 13.1-foot rubber hose, and listed 10 GPM flow rate for portable diesel transfer.
View on Amazon
Highest Flow RateIts stated real capacity is 116 gallons, and the title lists a 12V DC pump with 13.2 GPM flow for buyers prioritizing transfer speed.
View on Amazon- Auto Shut-Off Nozzle ExploreHorizon Black Transfer Tank
Compare Capacity, Fitment, and Transfer Features
| # | Product | Capacity | Material | Weight | Dimensions | Buy |
|---|---|---|---|---|---|---|
| 1 | 1. Mytee Products Rear Fill TankBest Overall | 120 gallons | Aluminum | 69.1 lb | — | View on Amazon |
| 2 | 2. VEVOR Portable Diesel TankBest Pump Details | 128 gallons | High Density Polyethylene (HDPE) | 103.2 lb | 31.5"W x 23"H | View on Amazon |
| 3 | 3. CAMMOO Portable Diesel TankHighest Flow Rate | 116 gallons | Aluminum, High Density Polyethylene (HDPE)… | 102.3 lb | 29.7"W x 32.7"H | View on Amazon |
| 4 |  4. ExploreHorizon Black Transfer TankAuto Shut-Off Nozzle | 128 gallons | — | 138 lb | 32.68"W x 32.28"H | View on Amazon |
| 5 |  5. ExploreHorizon Gray Transfer TankGray portable refueling setup | 128 gallons | — | 135.4 lb | 32.68"W x 32.28"H | View on Amazon |
| 6 |  6. ExploreHorizon Red Transfer TankMixed-fuel equipment refueling | — | High Density Polyethylene (HDPE) | 137.6 lb | 32"W x 32"H | View on Amazon |
Detailed Reviews: Best 120 Gallon Fuel Tank
#1 · Best Overall
1. Mytee Products Rear Fill Tank
- Capacity: 120 gallons
- Material: Aluminum
- Weight: 69.1 lb
Best for: Kenworth replacement-tank buyers.
Why it ranks #1: Its listed 120-gallon aluminum tank is a direct capacity match, with rear-fill passenger-side design and fitment details for several Kenworth models.
A rear-fill, passenger-side layout and 120-gallon aluminum body make the Mytee Products tank a direct replacement option for specified Kenworth trucks. Its 24.5-by-60-inch dimensions and listed OEM replacement reference help buyers narrow fitment for K100, T800, and W900 configurations.
The 120-gallon capacity supports substantial onboard fuel storage, while the aluminum construction keeps the tank material distinct from portable polyethylene transfer tanks. Rear fill and right-side placement are important installation details for matching an existing truck setup. Mytee lists compatibility across K100 variants, T800 models, and W900A, W900B, and W900L configurations; checking the exact truck against that list matters because compatibility is not stated for every Kenworth.
- 120-gallon capacity
- Aluminum construction
- Rear-fill, passenger-side configuration
- Lists multiple Kenworth K100, T800, and W900 fitments
- Compatibility is limited to the specified Kenworth models and configurations.
Skip it if you need a portable tank with an included transfer pump; VEVOR TKA400-E lists a 12V pump and 128-gallon capacity.
For Kenworth owners replacing a right-side, rear-fill tank, this 120-gallon aluminum unit offers a clearly specified configuration. Treat the listed models as the fit boundary, and compare the existing tank dimensions and truck configuration before choosing it.
Full product details
| Brand | Mytee Products |
|---|---|
| Capacity | 120 gallons |
| Compatible with Vehicle Type | Truck |
| Item Weight | 69.1 pounds |
| Manufacturer | Mytee Products |
| Part Number | MPNWA911-120-24PR |
| Manufacturer Warranty Description | 18 Month Warranty |
| Material | Aluminum |
| Model Number | MPNWA911-120-24PR |
Listed on Amazon as: Mytee Products 120 Gallon Rear Fill Aluminum Fuel Tank Compatible with Kenworth K100 K800 W900 Trucks 24.5×60 inch Passenger Side Replaces T05-124120-12
View on Amazon#2 · Best Pump Details
2. VEVOR Portable Diesel Tank
- Capacity: 128 gallons
- Material: High Density Polyethylene (HDPE)
- Weight: 103.2 lb
- Dimensions: 31.5"W x 23"H
Best for: Diesel transfer on remote jobs.
Why it ranks #2: The 128-gallon polyethylene tank includes a 12V pump, 13.1-foot rubber hose, and listed 10 GPM flow rate for portable diesel transfer.
A 128-gallon capacity paired with a 12V electric pump gives the VEVOR tank substantial portable diesel storage with on-site transfer capability. Its listed 10 GPM flow rate and 13.1-foot rubber hose help define the refueling workflow without relying on a fixed fuel installation.
The 12V pump and 10 GPM rating support transferring diesel directly at a jobsite, while the 13.1-foot hose gives the operator reach beyond the tank outlet. Polyethylene construction is described as weather- and UV-resistant, supporting outdoor placement. A lockable upper lid helps secure the tank, and an eight-level fuel gauge helps monitor remaining supply. At 31.5 inches wide and 23 inches high, its listed dimensions also help assess available transport or storage space.
- 128-gallon capacity
- 12V transfer pump rated at 10 GPM
- 13.1-foot rubber hose
- Lockable lid and eight-level fuel gauge
- The listing identifies this as a diesel tank, not a gasoline-transfer option.
Skip it if you need a listed tank for gasoline as well as diesel; ExploreHorizon DCvLu_5snMnHgZg0cTZuXPiZ2K specifies both fuels.
Choose it for portable diesel refueling where a 12V pump, hose reach, and fuel-level monitoring matter. Its listing identifies diesel transfer, so buyers needing a tank specified for gasoline should select a different fuel option.
Full product details
| Brand | VEVOR |
|---|---|
| Capacity | 128 gallons |
| Color | Black |
| Included Components | 1 x Transfer Tank |
| Item Dimensions W x H | 31.5"W x 23"H |
| Item Weight | 103.2 pounds |
| Manufacturer | VEVOR |
| Material | High Density Polyethylene (HDPE) |
| Model Number | TKA400-E |
| Dimensions | 31.5"W x 23"H |
Listed on Amazon as: VEVOR Portable Diesel Tank, 128 Gallon Capacity & 10 GPM Flow Rate, Transfering Tank with 12V Electric Transfering Pump and 13.1ft Rubber Hose, PE Transfer for Easy Transportation, Black
View on Amazon#3 · Highest Flow Rate
3. CAMMOO Portable Diesel Tank
- Capacity: 116 gallons
- Material: Aluminum, High Density Polyethylene (HDPE)…
- Weight: 102.3 lb
- Dimensions: 29.7"W x 32.7"H
Best for: Portable diesel storage crews.
Why it ranks #3: Its stated real capacity is 116 gallons, and the title lists a 12V DC pump with 13.2 GPM flow for buyers prioritizing transfer speed.
A stated real capacity of 116 gallons gives this CAMMOO portable diesel tank room to carry fuel to a worksite, while its 12V DC transfer system is rated at 13.2 GPM. Its flame-retardant LLDPE and HDPE construction is specified for outdoor use.
The portable format and 12V DC system support moving diesel to where equipment needs refueling, and the 13.2 GPM rating identifies its listed transfer pace. CAMMOO specifies UV, rain, snow, wear, and corrosion resistance for the tank material, alongside DOT requirements. A combo lock provides a way to secure stored fuel and manage routine access. The stated operating range with fuel inside is 14°F to 104°F, an important boundary for outdoor storage and use.
- 116-gallon stated real capacity
- 12V DC system rated at 13.2 GPM
- Flame-retardant LLDPE and HDPE construction
- Combo lock for securing stored fuel
- With fuel inside, the listed operating range is 14°F to 104°F.
Skip it if you need more than 116 gallons in one portable tank; VEVOR TKA400-E lists 128 gallons and a 12V transfer pump.
This suits crews needing portable diesel storage, a lockable access point, and a 12V transfer setup. Its usable operating conditions have a stated 14°F-to-104°F boundary with fuel inside, so consider that range for the work environment.
Full product details
| Brand | CAMMOO |
|---|---|
| Capacity | 116 gallons |
| Color | Black and Yellow |
| Item Dimensions W x H | 29.7"W x 32.7"H |
| Item Weight | 102.3 pounds |
| Manufacturer | CAMMOO |
| Material | Aluminum, High Density Polyethylene (HDPE), LLDPE |
| Dimensions | 29.7"W x 32.7"H |
Listed on Amazon as: CAMMOO Real 116 Gallon Portable Diesel Fuel Transfer Tank, 13.2 GPM, 12V DC
View on Amazon#4 · Auto Shut-Off Nozzle
4. ExploreHorizon Black Transfer Tank
- Capacity: 128 gallons
- Weight: 138 lb
- Dimensions: 32.68"W x 32.28"H
Best for: Black portable mixed-fuel tank.
Why it ranks #4: This 128-gallon portable tank lists a 12V 10 GPM pump, auto shut-off nozzle, 13-foot hose, and swivel connector.
A black finish distinguishes this 128-gallon ExploreHorizon portable tank, which is listed for diesel, gasoline, and kerosene. Its 12V self-priming pump delivers up to 10 GPM, and the included automatic shut-off nozzle and swivel connector support controlled refueling across several equipment types.
The 12V pump's up-to-10-GPM rating supports mobile fueling for vehicles, generators, tractors, marine engines, and heavy equipment, as listed. Its automatic shut-off nozzle provides a defined stopping point during dispensing, while the swivel hose connector allows the hose to move at the connection. Corrosion-resistant polyethylene is specified for fuel storage and transport. At 32.68 inches wide and 32.28 inches high, this version's dimensions help buyers assess space for carrying or positioning it.
- 128-gallon capacity
- Specified for diesel, gasoline, and kerosene
- 12V pump rated up to 10 GPM
- Automatic shut-off nozzle and swivel connector
- The 12V DC pump needs a compatible power source for transfer.
Skip it if you need the stated diesel, gasoline, and kerosene capability in a red tank; ExploreHorizon DCvLu_5snMnHgZg0cTZuXPiZ2K is listed in red.
Pick this black version for portable mixed-fuel transfer where its 128-gallon capacity and automatic shut-off nozzle suit the task. Its 12V pump and 32.68-by-32.28-inch footprint are key power and space considerations.
Full product details
| Brand | ExploreHorizon |
|---|---|
| Capacity | 128 gallons |
| Color | Black |
| Item Dimensions W x H | 32.68"W x 32.28"H |
| Item Weight | 138 pounds |
| Manufacturer | ExploreHorizon |
| Model Number | f3LkX2e0SPR5Y46YBXArlA9I |
| Dimensions | 32.68"W x 32.28"H |
#5
5. ExploreHorizon Gray Transfer Tank
- Capacity: 128 gallons
- Weight: 135.4 lb
- Dimensions: 32.68"W x 32.28"H
Best for: Gray portable refueling setup.
Why it ranks #5: The 128-gallon portable tank lists a 12V 10 GPM pump, auto shut-off nozzle, 13-foot hose, and swivel connector in gray.
The gray finish marks this ExploreHorizon 128-gallon tank, with listed storage and transfer for diesel, gasoline, and kerosene. A self-priming 12V pump rated up to 10 GPM works with an automatic shut-off nozzle and swivel connector for mobile equipment refueling.
For vehicles, generators, tractors, marine engines, and heavy equipment, the 12V pump's up-to-10-GPM rating provides a listed transfer rate for field fueling. The automatic shut-off nozzle helps manage the end of dispensing, and the swivel connector allows hose movement at the connection. Corrosion-resistant polyethylene supports the stated storage and transport role. Its 32.68-by-32.28-inch dimensions and 135.4-pound listed weight are relevant when planning placement and handling.
- 128-gallon capacity
- Listed for diesel, gasoline, and kerosene
- 12V self-priming pump rated up to 10 GPM
- Automatic shut-off nozzle and swivel connector
- The 12V transfer pump depends on access to a compatible power source.
Skip it if you need a different listed tank color; ExploreHorizon DCvLu_5snMnHgZg0cTZuXPiZ2K is red, while this version is gray.
This gray version suits mobile refueling for mixed-fuel equipment when a 12V transfer pump and automatic shut-off nozzle are useful. Account for its listed dimensions and 135.4-pound weight when planning handling and storage.
Full product details
| Brand | ExploreHorizon |
|---|---|
| Capacity | 128 gallons |
| Color | Gray |
| Item Dimensions W x H | 32.68"W x 32.28"H |
| Item Weight | 135.4 pounds |
| Manufacturer | ExploreHorizon |
| Model Number | uejO_EQr7AOKFNTZZDNKxwwPit4h |
| Dimensions | 32.68"W x 32.28"H |
#6
6. ExploreHorizon Red Transfer Tank
- Material: High Density Polyethylene (HDPE)
- Weight: 137.6 lb
- Dimensions: 32"W x 32"H
Best for: Mixed-fuel equipment refueling.
Why it ranks #6: Its title specifies 128 gallons and includes a 12V 10 GPM pump, auto shut-off nozzle, 13-foot hose, and swivel connector.
Support for diesel, gasoline, and kerosene separates this 128-gallon ExploreHorizon tank from diesel-only listings, while its 12V pump is rated up to 10 GPM. The portable polyethylene tank pairs that fuel range with an automatic shut-off nozzle and swivel hose.
The self-priming 12V pump provides up to 10 GPM for fueling vehicles, generators, tractors, marine engines, and heavy equipment, according to the listing. An automatic shut-off nozzle helps manage dispensing, while the swivel hose connector supports hose movement during refueling. Heavy-duty, corrosion-resistant polyethylene is specified for storage and transport of the listed fuels. Its dimensions are 32 inches wide by 32 inches high, useful measurements when planning where the tank will travel or sit.
- 128-gallon capacity
- Listed for diesel, gasoline, and kerosene
- 12V self-priming pump rated up to 10 GPM
- Automatic shut-off nozzle and swivel hose connector
- The transfer pump requires a 12V DC power source.
Skip it if you need a tank that operates without 12V DC power; Mytee Products MPNWA911-120-24PR is a truck replacement tank rather than a pumped transfer unit.
This fits operators transferring listed fuels to equipment, boats, or vehicles who value an automatic shut-off nozzle. Plan around its 32-by-32-inch dimensions and the 12V pump requirement when arranging transport and use.
Full product details
| Brand | ExploreHorizon |
|---|---|
| Color | Red |
| Item Dimensions W x H | 32"W x 32"H |
| Item Weight | 137.6 pounds |
| Manufacturer | ExploreHorizon |
| Material | High Density Polyethylene (HDPE) |
| Model Number | DCvLu_5snMnHgZg0cTZuXPiZ2K |
| Dimensions | 32"W x 32"H |
Avoid the replacement-tank fitment trap
A tank’s gallon rating alone does not establish that it will fit a truck. The Mytee Products Rear Fill Tank is a 24.5-by-60-inch, passenger-side rear-fill aluminum tank, and its listed compatibility names specific Kenworth models, including the T800 and W900 variants. A different fill location, side, mounting arrangement, or truck configuration could make a nominally similar tank unsuitable.
Before ordering, compare the existing tank’s dimensions, fill orientation, side, and replacement part number with the new tank’s details, then confirm fitment for the exact vehicle configuration. The portable options have different dimensions and purposes: for example, VEVOR lists a portable tank measuring 31.5 inches wide by 23 inches high.
Treat portable transfer capacity as a separate use case, not proof of direct-replacement compatibility. The provided data does not list every mounting measurement or fitment for every product, so verify those details with the seller or manufacturer.
Portable capacity is not the same as usable payload
A portable tank’s gallon capacity does not tell you whether your vehicle or equipment can safely carry it when full. The listed portable options weigh 102.3 pounds for the CAMMOO and 103.2 pounds for the VEVOR before accounting for fuel; ExploreHorizon models list weights of 135.4 to 138 pounds. Fuel adds substantial load, so check the carrying vehicle’s payload, the tank’s restraint requirements, and the manufacturer’s instructions before loading or transporting it.
Capacity also varies: CAMMOO lists 116 gallons, while VEVOR and the ExploreHorizon titles specify 128 gallons. The CAMMOO description additionally says to use it with fuel between 14°F and 104°F.
These figures make clear why a larger nominal capacity is not automatically the better choice: vehicle capacity, intended fuel, operating conditions, and secure placement matter alongside gallons. The supplied information does not establish a loaded weight or a specific installation method for these portable tanks.
How to Choose a 120-Gallon Fuel Tank
Tank format and fitment
Look first for a tank designed for your installation: a vehicle replacement tank and a portable transfer tank serve different jobs. Mytee Products lists a 120-gallon aluminum rear-fill passenger-side tank, sized 24.5 by 60 inches, with compatibility details for several Kenworth models. Portable alternatives include the 116-gallon CAMMOO and 128-gallon VEVOR and ExploreHorizon tanks; they are described as transfer tanks, not Kenworth replacements.
The Mytee option favours a buyer whose truck matches its specified fitment and layout. Portable models favour a buyer who needs to move fuel to equipment or vehicles.
Confirm dimensions, mounting, fill location, and exact vehicle compatibility before treating any tank as a direct replacement.
Capacity and loaded weight
Choose capacity with both your fuel requirement and the carrying vehicle’s limits in mind. These products range from CAMMOO’s listed 116 gallons to the 120-gallon Mytee tank and 128-gallon portable models. Listed empty weights also differ: CAMMOO is 102.3 pounds, VEVOR is 103.2 pounds, and ExploreHorizon models range from 135.4 to 138 pounds; Mytee lists 69.1 pounds.
Fuel adds weight, and the supplied data does not give loaded weights. Buyers seeking an exact 120-gallon replacement should focus on Mytee’s capacity and fitment.
A portable-transfer buyer needing more listed capacity may prefer a 128-gallon model, while those prioritizing a smaller listed capacity can consider CAMMOO. Check payload limits before carrying any option.
Pump and transfer equipment
For portable refueling, compare the pump rate and included transfer components rather than capacity alone. VEVOR lists a 12V pump, 10 GPM flow rate, and 13.1-foot rubber hose; ExploreHorizon lists a 12V 10 GPM pump, 13-foot hose, swivel connector, and auto shut-off nozzle. CAMMOO’s title states a 12V DC pump and 13.2 GPM, though the supplied feature excerpt does not describe all included components.
The Mytee tank is a rear-fill truck tank, and no transfer pump is listed. Buyers who want a described nozzle and swivel hose may favour ExploreHorizon; those looking for a specified hose and pump may consider VEVOR.
Verify the full package contents and fuel compatibility before relying on an advertised flow rate.
Which 120-Gallon Fuel Tank Should You Choose?
Choose the Mytee Products Rear Fill Tank if you need a 120-gallon replacement tank for a compatible Kenworth and its 24.5-by-60-inch, passenger-side rear-fill layout matches your truck. For portable diesel transfer with a pump and hose, the VEVOR Portable Diesel Tank lists 128 gallons, a 10 GPM pump, and a 13.1-foot hose. The CAMMOO Portable Diesel Tank suits buyers seeking a 116-gallon portable option with a stated 13.2 GPM pump.
If an auto shut-off nozzle and swivel connector are priorities, consider the ExploreHorizon Black Transfer Tank; the gray and red versions list similar transfer features. Treat the ExploreHorizon colors as variants, not different capacity choices, and verify fitment, payload, fuel compatibility, and package details before buying.
Related Buying Guides
- Best 6 Gallon Marine Fuel Tank
- Best 5 Gallon Gas Tank
- Best Portable Fuel Tank
- Best Fuel Tank Liner
- Best Outboard Fuel Tank
Frequently Asked Questions
How do I confirm a replacement fuel tank will fit my truck?
Match the tank’s listed vehicle fitment to your truck’s make and model, then compare its dimensions, fill location, and side orientation with your existing setup. For the Mytee tank, verify Kenworth compatibility and the 24.5-by-60-inch, passenger-side rear-fill layout. Confirm mounting and connection details before ordering.
What should I check before transporting a portable fuel tank?
Check the tank’s fuel compatibility, condition, closures, and included equipment, then secure it against movement and account for its loaded weight in your vehicle’s payload. Review the product’s instructions and applicable transport requirements before travel. Do not assume that a portable tank’s listed capacity is safe for your vehicle.
Can one transfer tank be used for both diesel and gasoline?
Only use a tank for both fuels if its manufacturer explicitly approves both and provides instructions for changing fuels. The CAMMOO and VEVOR titles specify diesel, while the ExploreHorizon listings specify diesel and gasoline. Check the exact model’s documentation and avoid cross-fueling when compatibility is unclear.
How do I choose between the portable tanks’ pumps?
Compare the listed flow rate, power, hose, and included transfer equipment with your needs. The CAMMOO lists a 13.2 GPM, 12V DC pump; the VEVOR lists a 10 GPM pump and 13.1-foot hose. The ExploreHorizon listings specify a 12V 10 GPM pump and 13-foot hose.
Do the red, black, and gray tanks have different features?
The listings describe the red, black, and gray ExploreHorizon tanks with the same stated 128-gallon capacity, 12V 10 GPM pump, auto shut-off nozzle, 13-foot hose, and swivel connector. They appear to be color variants, not different capacity choices; verify the selected listing’s package details before buying.
Final Words
Choose the Mytee Products tank when you need a 120-gallon replacement for a compatible Kenworth and its dimensions and passenger-side rear-fill layout match your truck. For portable diesel transfer, compare the VEVOR’s listed 128-gallon capacity and hose with the CAMMOO’s 116-gallon capacity and stated pump rate. Consider an ExploreHorizon variant for its listed diesel-and-gasoline compatibility and transfer features.
Before ordering, verify fitment, payload, fuel compatibility, and included equipment.
