DEF Fluid 2.5 Gallon Ultra Pure Heavy Duty

Keep your diesel engine running efficiently and compliant with emissions standards using this Prime Guard UltraPure Diesel Exhaust Fluid (DEF), designed for SCR-equipped trucks and equipment.

✔ 2.5-gallon container with easy-pour nozzle
✔ Ultra-pure DEF for reliable SCR system performance
✔ Helps reduce harmful NOx emissions
✔ Improves engine efficiency and reduces maintenance issues
✔ Meets ISO 22241, AUS32, and DIN 70070 standards
✔ Compatible with all diesel engines using DEF systems

 WHY DRIVERS USE DEF

• Required for modern diesel engines with SCR systems
• Helps reduce emissions and meet EPA regulations
• Prevents engine derating and warning codes
• Keeps your truck running at full performance

Diesel exhaust fluid works by converting harmful nitrogen oxides into harmless nitrogen and water, helping protect both your engine and the environment.

 PRODUCT SPECIFICATIONS

• Type: Diesel Exhaust Fluid (DEF)
• Size: 2.5 Gallons
• Composition: 32.5% urea / 67.5% deionized water 
• Purity: UltraPure (formaldehyde-free)
• Standards: ISO 22241 / AUS32 / DIN 70070 
• Application: SCR diesel engines

 PERFECT FOR

• Semi-trucks and diesel pickups
• Fleet vehicles
• Construction and heavy equipment
• Any DEF-equipped diesel engine