Diesel Exhaust Fluid DEF

Diesel Exhaust Fluid (DEF) is a non-hazardous emissions control liquid required by modern diesel engines.

DEF is injected into the exhaust stream. It is never added to diesel fuel. It is a non-hazardous solution of 32.5% urea in 67.5% de-ionized water.

DEF is clear and colorless, and looks like water. It has a slight smell of ammonia, similar to some cleaning agents. DEF is used in Selective Catalytic Reduction (SCR) technology to remove harmful NOx emissions from diesel engines.

DEF is sensitive to chemical impurities and it is essential that it is handled carefully to prevent contamination. DEF is much more likely to be damaged by the materials it touches than to cause damage to equipment.

STANDARD DEF FEATURES

  • All DEF tanks are made using 304-grade stainless steel

  • 125-gallon tank with 750/990 models

  • 60-gallon tank with 500 models

  • Every FuelPRO trailer DEF system is purged and sealed per ISO 22241 standards for handling DEF

  • 50 micron stainless steel filter

  • At-a-Glance stainless steel DEF gauge

  • DC Pump for DEF

  • Add DEF now, or later when you need it

  • We can add DEF to any existing DOT approved trailer

  • Inside 750/990 Model Box with Gas Engine

    Gas Engine for 750-990 Models

    Inside 750/990 Model Box with Gas Engine
  • Inside 750/990 Model Box with DC Pump

    DC Pump for 750/900 Models

    Inside 750/990 Model Box with DC Pump
  • Inside 500 Model Box with DC Pump

    DC Pump for 500 Models

    Inside 500 Model Box with DC Pump
  • Fill cap and DEF gauge

    DEF Fill Cap

    Fill Cap and At-a-Glance Stainless Steel DEF Gauge
We like a simple system with less valves and connectors to minimize contamination. No 2-in-1 pumping system to get contaminated, leak and/or collect dirt.

Nathan Frey

DEF Models

 500 Front Box DEF Model750 Front Box DEF Model990 Front Box DEF Model
Tank Size500 Gallon750 Gallon990 Gallon
Tank Thickness7 Gauge7 Gauge7 Gauge
DOT CompliantYesYesYes
Torsion Axlesdual 3,500 lbsdual 5,000 lbsdual 6,000 lbs
Hubs6 lug6 lug8 lug
Electric BrakesYesYesYes
Tires16" D Range16" D Range16" D Range
Fuel Baffles225
Frame6"6"6"
L/W/H12'8" / 5'10" / 4'8"13'5" / 6'9" / 5'15'6" / 6'9" / 5'
Empty Weight2,400 lbs3,120 lbs4,025 lbs
GVWR7,000 lbs10,000 lbs12,000 lbs
DEF Tank60 Gallon125 Gallon125 Gallon
 750 Front-Rear Box DEF Model990 Front-Rear Box DEF Model
Tank Size750 Gallon990 Gallon
Tank Thickness7 Gauge7 Gauge
DOT CompliantYesYes
Torsion Axlesdual 6,000 lbsdual 7,000 lbs
Hubs8 lug8 lug
Electric BrakesYesYes
Tires16" D Range16" E Range
Fuel Baffles25
Frame6"6"
L/W/H15'10" / 6'9" / 5'17'11" / 6'9" / 5'
Empty Weight3,620 lbs4,300 lbs
GVWR12,000 lbs14,000 lbs
DEF Tank125 Gallon125 Gallon
 750 Front-Mid-Rear Box DEF Model990 Front-Mid-Rear Box DEF Model
Tank Size750 Gallon990 Gallon
Tank Thickness7 Gauge7 Gauge
DOT CompliantYesYes
Torsion Axlesdual 7,000 lbstri 6,000 lbs
Hubs8 lug8 lug
Electric BrakesYesYes
Tires16" E Range16" E Range
Fuel Baffles25
Frame6"6"
L/W/H18'4" / 6'9" / 5'20'5" / 6'9" / 5'
Empty Weight4,080 lbs4,625 lbs
GVWR14,000 lbs18,000 lbs
DEF Tank125 Gallon125 Gallon
  • FuelPRO-750-FMR-DEF

    FuelPRO 750 FMR-DEF

    Shown with custom black color and aluminum wheels
  • FuelPRO-990-DEF

    FuelPRO 990 FB-DEF

    Shown with green custom color and aluminum wheels
  • FuelPRO-750-DEF

    FuelPRO 750 FB-DEF

    Shown with gray custom color and aluminum wheels
  • FuelPRO 750 Fuel Trailer with DEF

    FuelPRO 750 FRB with DEF

    FuelPRO 750 Front-Rear Box Model with DEF, shown with custom black color and aluminum wheels
  • FuelPRO 990 Front-Mid-Rear Box Model

    FuelPRO 990 Front-Mid-Rear Box Model

    Shown with Aluminum Wheels and DEF
FuelPro Trailers