Standard Technologies manufactures rugged, 50-state-compliant frame-mounted diesel tanks for trucks and trailers engineered from heavy-duty aluminized steel for reliable diesel storage, generator fueling, and mobile refueling applications.

Standard Technologies’ frame‑mounted diesel tanks fit neatly under the frame of trucks and trailers and come in 14, 20, 30, 40, and 50‑gallon capacities—including a popular 30‑gallon diesel tank. Built from rugged 12‑gauge aluminized steel and 50‑state compliant, each tank ships ready to plumb with a sending unit, draw and return fittings, a vent, and a roll‑over valve. For diesel generator fuel systems or mobile refueling, optional packages add a fill neck with vented cap, anti‑siphon hose barb, an 8‑GPM transfer pump, and a UL‑listed hose/nozzle set for safe, efficient fueling on the go.

frame-mounted-tanks-diesel

All versions of this fuel tank are eligible for sale in all 50 states.
No certification restrictions apply.

Description Tank Dimensions (L×W×H) Tank Only Diesel Generator Fuel System Diesel Refueling System Diesel Generator / Refueling Combo System
14 Gallon Frame Mounted Tank – Diesel 28.25” × 17” × 7.125” ST-F2014-D ST-F2014-DGS ST-F2014-DRS ST-F2014-DCS
20 Gallon Frame Mounted Tank – Diesel 62” × 11.5” × 7.125” ST-F2020-D ST-F2020-DGS ST-F2020-DRS ST-F2020-DCS
30 Gallon Frame Mounted Tank – Diesel 60.5” × 17” × 7.125” ST-F2030-D ST-F2030-DGS ST-F2030-DRS ST-F2030-DCS
40 Gallon Frame Mounted Tank – Diesel 60.5” × 22.5” × 7.125” ST-F2040-D ST-F2040-DGS ST-F2040-DRS ST-F2040-DCS
50 Gallon Frame Mounted Tank – Diesel 66” × 21.5” × 8” ST-F2050-D ST-F2050-DGS ST-F2050-DRS ST-F2050-DCS

Frame Mounted Tanks – Diesel Included Components:

Tank Only Includes:

  • (1) Fuel Tank – Aluminized Steel, 12 Gauge
  • (1) 12V Sending Unit
  • (1) Draw Tube w/ 5/16″ Hose Barb
  • (1) Return Fitting w/ 5/16″ Hose Barb
  • (1) 5/8″ Tank Vent
  • (1) Roll Over Valve

Diesel Generator / Refueling Combo System Includes:

  • (1) Fuel Tank – Aluminized Steel, 12 Gauge
  • (1) Draw Tube w/ 5/16″ Hose Barb
  • (1) Return Fitting w/ 5/16″ Hose Barb
  • (1) Draw Tube w/ 1/2″ Anti-Siphon Hose Barb
  • (1) Roll Over Valve
  • (1) 12V Sending Unit
  • (1) 5/8″ Tank Vent
  • (1) Fillneck
  • (1) Vented Fuel Cap – Tethered
  • (1) Zinc Plated Bezel
  • (4 ft.) 1/4″ Fuel Hose CARB / Clamps
  • (40 ft.) 5/16″ Fuel Hose CARB / Clamps
  • (2 ft.) 5/8″ Vent Hose / Clamp
  • (2 ft.) 2″ Fuel Fill Hose / Clamps
  • (1) 12V 8 GPM Transfer Pump
  • (4 ft.) 1/2″ Fuel Hose / Clamps
  • (1) 3/4″ × 5.67″ UL Hose Assembly
  • (1) 3/4″ Manual UL Nozzle
  • (8 ft.) Power Cord
  • Tank Mounting Hardware – Grade 8

Diesel Generator Fuel System Includes:

  • (1) Fuel Tank – Aluminized Steel, 12 Gauge
  • (1) Draw Tube w/ 5/16″ Hose Barb
  • (1) Return Fitting w/ 5/16″ Hose Barb
  • (1) Roll Over Valve
  • (1) 12V Sending Unit
  • (1) 5/8″ Tank Vent
  • (1) Fillneck
  • (1) Vented Fuel Cap – Tethered
  • (1) Zinc Plated Bezel
  • (40 ft.) 5/16″ Fuel Hose CARB / Clamps
  • (4 ft.) 1/4″ Fuel Hose CARB / Clamps
  • (2 ft.) 5/8″ Vent Hose / Clamps
  • (2 ft.) 2″ Fuel Fill Hose / Clamps
  • Tank Mounting Hardware – Grade 8

Diesel Refueling System Includes:

  • (1) Fuel Tank – Aluminized Steel, 12 Gauge
  • (1) Draw Tube w/ 1/2″ Anti-Siphon Hose Barb
  • (1) Roll Over Valve
  • (1) 12V Sending Unit
  • (1) 5/8″ Tank Vent
  • (1) Fillneck
  • (1) Vented Fuel Cap – Tethered
  • (1) Zinc Plated Bezel
  • (4 ft.) 1/4″ Fuel Hose CARB / Clamp
  • (2 ft.) 5/8″ Vent Hose / Clamps
  • (2 ft.) 2″ Fuel Fill Hose / Clamps
  • (1) 12V 8 GPM Transfer Pump
  • (4 ft.) 1/2″ Fuel Hose / Clamps
  • (1) 3/4″ × 5.67″ UL Hose Assembly
  • (1) 3/4″ Manual UL Nozzle
  • (8 ft.) Power Cord
  • Tank Mounting Hardware – Grade 8

Industry-Leading Manufacturer of Fuel Tanks and Fuel System Components

Standard Technologies is a trusted leader in the design and manufacturing of aftermarket and OEM fuel tanks and fuel system components. Whether you need a standard fuel tank or a custom-engineered solution, our experienced engineering team delivers full technical support, precision design, and exceptional manufacturing expertise. We produce fuel tanks from a wide range of materials and components, ensuring every product meets the highest standards of efficiency, durability, and long-term performance—all while maintaining cost-effective production.

At Standard Technologies, we continually invest in our manufacturing facilities, advanced equipment, employee training, and quality certifications to ensure we remain at the forefront of fuel system innovation. Our commitment to excellence has made us the preferred OEM partner for fuel tank and fuel system component manufacturing across North America.

For more information on our fuel tanks and systems, contact us today