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Blue DEF Diesel Exhaust Fluid — Bulk Sizes, Totes, Drums & Pumps

Order DEF that meets AUS 32 / ISO 22241. Ships within 24 hours.
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Diesel Exhaust Fluid (DEF) is a non-toxic solution designed to reduce harmful emissions in modern diesel engines. By injecting DEF into the exhaust stream, fleets remain compliant with EPA standards, while improving fuel efficiency and extending engine life. Keep your fleet compliant and running at peak performance with Keller-Heartt’s high-quality BlueDEF® and private-label diesel exhaust fluid solutions.

Blue DEF keeps modern diesel engines compliant and efficient by reducing NOx in Selective Catalytic Reduction (SCR) systems. Our DEF is 32.5% urea / 67.5% purified water, meets AUS 32 and ISO 22241, and ships within 24 hours. Use the quick chooser below to pick your size.

Shop Blue DEF Containers & Pumps

  • Best Sellers badge

    Blue DEF 55-Gallon Drum Premium Diesel Exhaust Fluid

    $320.25 - $320.25
    $320.25
    $320.25 - $320.25
    $320.25

    Diesel exhaust fluid is one of the key elements of the Selective Catalytic Reduction (SCR) process used by most medium and heavy-duty engine builde...

    View full details
    $320.25 - $320.25
    $320.25
    $320.25 - $320.25
    $320.25
  • Best Sellers badge

    Blue DEF 330-Gallon Tote Premium Diesel Exhaust Fluid

    $1,359.75 - $1,359.75
    $1,359.75
    $1,359.75 - $1,359.75
    $1,359.75

    Blue DEF DEF330 Diesel Exhaust Fluid - 330-Gallon Tote contains Diesel Exhaust Fluid (DEF). One of the key elements of the Selective Catalytic Redu...

    View full details
    $1,359.75 - $1,359.75
    $1,359.75
    $1,359.75 - $1,359.75
    $1,359.75
  • 4166-DEFN Hand-Operated DEF Drum Pump (Rotary Pump)

    4166-DEFN Hand-Operated DEF Drum Pump (Rotary Pump)

    $250.95 - $250.95
    $250.95
    $250.95 - $250.95
    $250.95

    DEF hand pump with 9.8Ft Delivery hose. 3/4" spout and manual nozzle.

    $250.95 - $250.95
    $250.95
    $250.95 - $250.95
    $250.95

  • Blue DEF 275-Gallon Tote Premium Diesel Exhaust Fluid

    $1,228.50 - $1,228.50
    $1,228.50
    $1,228.50 - $1,228.50
    $1,228.50

    Blue DEF DEF275 Diesel Exhaust Fluid - 275-Gallon Tote contains Diesel Exhaust Fluid (DEF). One of the key elements of the Selective Catalytic Redu...

    View full details
    $1,228.50 - $1,228.50
    $1,228.50
    $1,228.50 - $1,228.50
    $1,228.50

  • Blue DEF 2.5-Gallon Case Premium Diesel Exhaust Fluid

    $43.73 - $43.73
    $43.73
    $43.73 - $43.73
    $43.73

    Diesel exhaust fluid is one of the key elements of the Selective Catalytic Reduction (SCR) process used by most medium and heavy-duty engine builde...

    View full details
    $43.73 - $43.73
    $43.73
    $43.73 - $43.73
    $43.73

  • Economical DEF Pump DEF-1000

    $596.40 - $596.40
    $596.40
    $596.40 - $596.40
    $596.40

    *DURABLEIdeal to be used on applications withextended run times and frequentstopping and starting *VERSATILEAdjustable bung adapter allows pumpto b...

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    $596.40 - $596.40
    $596.40
    $596.40 - $596.40
    $596.40
  • DEF3-DN49N Electric Pumping System for 55 Gallon Drums of DEF

    DEF3-DN49N Electric Pumping System for 55 Gallon Drums of DEF

    $953.77 - $953.77
    $953.77
    $953.77 - $953.77
    $953.77

    For Drums. Stationary 55-Gallon Drum Electric Pumping System with timer. Includes Pump with mounting Bracket, 20' delivery hose, 4' suction hose an...

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    $953.77 - $953.77
    $953.77
    $953.77 - $953.77
    $953.77
  • DEF3-DN50N Electric Pumping System for 55 Gallon Drums of DEF

    DEF3-DN50N Electric Pumping System for 55 Gallon Drums of DEF

    $898.22 - $898.22
    $898.22
    $898.22 - $898.22
    $898.22

    Click here to order DEF-35. (Quick coupler/downtube for 2" buttress threads). For Drums. Stationary 55-Gallon Drum Electric Pumping System with tim...

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    $898.22 - $898.22
    $898.22
    $898.22 - $898.22
    $898.22
Shop All Blue DEF Containers & Pumps

Shop DEF Pump Accessories

  • Economical DEF Pump DEF-1000

    $596.40 - $596.40
    $596.40
    $596.40 - $596.40
    $596.40

    *DURABLEIdeal to be used on applications withextended run times and frequentstopping and starting *VERSATILEAdjustable bung adapter allows pumpto b...

    View full details
    $596.40 - $596.40
    $596.40
    $596.40 - $596.40
    $596.40
  • DEF-50 Polyethylene Manual Nozzle

    DEF-50 Polyethylene Manual Nozzle

    $206.46 - $206.46
    $206.46
    $206.46 - $206.46
    $206.46

    DEF-50 Polyethylene Manual Nozzle

    $206.46 - $206.46
    $206.46
    $206.46 - $206.46
    $206.46
  • DEF-49 Stainless Steel Automatic Nozzle

    DEF-49 Stainless Steel Automatic Nozzle

    $603.39 - $603.39
    $603.39
    $603.39 - $603.39
    $603.39

    DEF-49 Stainless Steel Automatic Nozzle

    $603.39 - $603.39
    $603.39
    $603.39 - $603.39
    $603.39
  • PDO7P-APS-PAA Air Operated Diaphragm Pump for DEF

    PDO7P-APS-PAA Air Operated Diaphragm Pump for DEF

    $1,075.43 - $1,075.43
    $1,075.43
    $1,075.43 - $1,075.43
    $1,075.43

    3/4"polypropylene air operated diaphragm pump for DEF. 14.8 GPM flow rate. 3/4" inlet/outlet

    $1,075.43 - $1,075.43
    $1,075.43
    $1,075.43 - $1,075.43
    $1,075.43
  • DEF-6-PUMP (12V)

    DEF-6-PUMP (12V)

    $1,201.43 - $1,201.43
    $1,201.43
    $1,201.43 - $1,201.43
    $1,201.43

    12 Volt electric pump only with 6 ft. cables. 2800 RPM, 18 amp, 7-9 GPM and 3/4" barbed outlet

    $1,201.43 - $1,201.43
    $1,201.43
    $1,201.43 - $1,201.43
    $1,201.43
  • DEF-52H33S Hose Reel For DEF

    DEF-52H33S Hose Reel For DEF

    $1,520.90 - $1,520.90
    $1,520.90
    $1,520.90 - $1,520.90
    $1,520.90

    3/4" x 33" hose reel for DEF. 3/4" barbed inlet, 3/4" cut hose end with hose stop. Includes (2) hose clamps (black in color)

    $1,520.90 - $1,520.90
    $1,520.90
    $1,520.90 - $1,520.90
    $1,520.90
  • DEF3A-PUMP (110V)

    DEF3A-PUMP (110V)

    $1,138.21 - $1,138.21
    $1,138.21
    $1,138.21 - $1,138.21
    $1,138.21

    110 Volt electric pump with timer with 6 ft. electric cord. 1400 RPM, 7-9 GPM and 3/4" barbed outlet

    $1,138.21 - $1,138.21
    $1,138.21
    $1,138.21 - $1,138.21
    $1,138.21
  • DEF-58 Polyethylene Automatic Nozzle w/Built-In Meter

    DEF-58 Polyethylene Automatic Nozzle w/Built-In Meter

    $1,160.69 - $1,160.69
    $1,160.69
    $1,160.69 - $1,160.69
    $1,160.69

    Polyethylene automatic nozzle with built in digital meter

    $1,160.69 - $1,160.69
    $1,160.69
    $1,160.69 - $1,160.69
    $1,160.69
Shop All DEF Pump Accessories
Why Blue DEF?

Why Blue DEF?

  • Meets EPA 2010 compliance
  • Meets purity and ISO standards
  • Ships in 24 hours
  • Peak/BlueDEF
  • API cert
  • Free shipping all products
Place a DEF Order Today
Why Diesel Exhaust Fluid is Essential

Why Diesel Exhaust Fluid is Essential

Diesel Exhaust Fluid (DEF) is a non-toxic solution designed to reduce harmful emissions in modern diesel engines. By injecting DEF into the exhaust stream, fleets remain compliant with EPA standards, while improving fuel efficiency and extending engine life.

  • Meets all ISO 22241 standards
  • Works with all SCR-equipped diesel engines
  • Reduces nitrogen oxide (NOx) emissions by up to 90%
Shop DEF Solutions Now
Keller-Heartt Offers Quality Diesel Exhaust Fluid You Can Rely On

Keller-Heartt Offers Quality Diesel Exhaust Fluid You Can Rely On

We’re dedicated to ensuring you get the high-quality DEF you need exactly when you need it. With a range of quantities, fast and free shipping, and an exceptional customer service team to back it all up, we can be the one-stop shop you need to keep your vehicle or fleet running.

Place a DEF Order Today
DEF Solutions for Every Operation

DEF Solutions for Every Operation

No matter the size of your fleet or facility, Keller-Heartt offers packaging and delivery options to fit your needs:

  • 2.5 Gallon Jugs – For small-scale or on-the-go use
  • 55-Gallon Drums – Mid-volume needs with easy dispensing
  • 275 & 330 Gallon Totes – High-capacity, reusable options
  • Bulk Delivery – Direct to your fleet yard or facility
Find the Right Size DEF Solution

Blue DEF FAQs

What is Blue DEF?
 A diesel exhaust fluid (32.5% high-purity urea in deionized water) used in SCR systems to convert NOx into nitrogen and water. It’s not a fuel additive.

Does Blue DEF meet ISO 22241/AUS 32?
 Yes. Our Blue DEF meets AUS 32 and ISO 22241/DIN 70070 specs for purity and concentration to protect SCR components.

• Meets AUS 32, DIN 70070, ISO 22241
• Urea concentration 32.5% ±0.7%
• Low metals/phosphates

Which size should I buy for a small fleet?
 Most small fleets start with a 55-gallon drum; upgrade to a 275-gallon tote if you refill weekly.

How long does DEF last?
 Stored between 12–86°F in a sealed container, shelf life is about 12 months. Heat shortens shelf life.

Do I need a special pump for DEF?
 Yes, always use DEF-rated pumps, hoses, and fittings to prevent contamination. See our electric and manual options.

Is Blue DEF safe in winter?
 DEF freezes at ~12°F. It can thaw and be used again without loss of quality, but keep containers protected where possible.

What purity details matter?
 Low metals (Fe, Al) and low phosphates prevent deposits and sensor damage. Our DEF meets strict ISO 22241 impurity limits.

How quickly do you ship? Most Blue DEF orders ship within 24 hours. Bulk pricing available; contact us for quotes.

Quick Shop

Diesel Exhaust Fluid Solutions

  • Best Sellers badge

    Blue DEF 55-Gallon Drum Premium Diesel Exhaust Fluid

    $320.25 - $320.25
    $320.25
    $320.25 - $320.25
    $320.25

    Diesel exhaust fluid is one of the key elements of the Selective Catalytic Reduction (SCR) process used by most medium and heavy-duty engine builde...

    View full details
    $320.25 - $320.25
    $320.25
    $320.25 - $320.25
    $320.25
  • Best Sellers badge

    Blue DEF 330-Gallon Tote Premium Diesel Exhaust Fluid

    $1,359.75 - $1,359.75
    $1,359.75
    $1,359.75 - $1,359.75
    $1,359.75

    Blue DEF DEF330 Diesel Exhaust Fluid - 330-Gallon Tote contains Diesel Exhaust Fluid (DEF). One of the key elements of the Selective Catalytic Redu...

    View full details
    $1,359.75 - $1,359.75
    $1,359.75
    $1,359.75 - $1,359.75
    $1,359.75

  • Blue DEF 275-Gallon Tote Premium Diesel Exhaust Fluid

    $1,228.50 - $1,228.50
    $1,228.50
    $1,228.50 - $1,228.50
    $1,228.50

    Blue DEF DEF275 Diesel Exhaust Fluid - 275-Gallon Tote contains Diesel Exhaust Fluid (DEF). One of the key elements of the Selective Catalytic Redu...

    View full details
    $1,228.50 - $1,228.50
    $1,228.50
    $1,228.50 - $1,228.50
    $1,228.50

  • Blue DEF 2.5-Gallon Case Premium Diesel Exhaust Fluid

    $43.73 - $43.73
    $43.73
    $43.73 - $43.73
    $43.73

    Diesel exhaust fluid is one of the key elements of the Selective Catalytic Reduction (SCR) process used by most medium and heavy-duty engine builde...

    View full details
    $43.73 - $43.73
    $43.73
    $43.73 - $43.73
    $43.73
  • Diesel Fuel Supplement - Case Of 12 (1 QT Containers)

    Diesel Fuel Supplement - Case Of 12 (26 OZ Containers)

    $118.22 - $118.22
    $118.22
    $118.22 - $118.22
    $118.22

    Buy Diesel Fuel Supplement +Cetane Boost in cases of 12 (26 OZ Containers). Diesel Fuel Supplement +Cetane Boost is used as a winterizer/antigel in...

    View full details
    $118.22 - $118.22
    $118.22
    $118.22 - $118.22
    $118.22
Shop All Diesel Exhaust Fluid Products

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