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Cardboard box containing 2.5 gallons of colorless diesel exhaust fluid

Peak

Peak Kleen DEF Diesel Exhaust Fluid 2.5 gal Box

SKU CH-4MFG-81S1T

A 2.5 gal box of diesel exhaust fluid meeting API and ISO 22241 standards for SCR systems

  • ColorColorless
  • API & ISO-22241-1 certified for SCR systems
  • 5 % high-purity urea cuts NOx to nitrogen and water
  • Non-toxic, non-flammable, minimum-risk transport
  • 5 gal box fits fleet refill routines
  • Specific gravity 1.09 ensures consistent dosing

Diesel Exhaust Fluid for SCR Systems

Peak Kleen DEF is a 2.5 gal box of diesel exhaust fluid formulated for selective catalytic reduction systems. The fluid contains 32.5 percent high-purity synthetic urea and 67.5 percent deionized water. It is classified as minimum risk for transportation and is non-toxic, stable and nonflammable.

API and ISO-22241-1 Certified

The fluid meets API and ISO-22241-1 standards, which is the single specification that determines compatibility with SCR-equipped diesel engines. Using fluid that meets these standards ensures proper dosing and effective conversion of nitrogen oxide to harmless nitrogen and water.

Works with Specialized Dosing Modules

The fluid is injected into the exhaust stream through a specialized dosing module on the vehicle. It requires a compatible SCR system and does not replace other engine fluids. The 2.5 gal container provides a convenient supply for refilling the DEF tank without additional equipment.

Highlights

  • API & ISO-22241-1 certified for SCR systems
  • 5 % high-purity urea cuts NOx to nitrogen and water
  • Non-toxic, non-flammable, minimum-risk transport
  • 5 gal box fits fleet refill routines
  • Specific gravity 1.09 ensures consistent dosing

Specifications

BrandPeak
ColorColorless

Questions about this item

What does the 2.5 gallon size mean for refilling my vehicle's DEF tank?

The 2.5 gallon box provides enough fluid for multiple top-offs of typical passenger vehicle DEF tanks, which usually hold between 5 and 7 gallons total.

What do the API and ISO-22241-1 standards guarantee for this fluid?

These standards certify the fluid meets the exact 32.5 percent urea purity and quality required for reliable SCR system operation and emissions compliance.

How does the box container design affect storage and pouring?

The box format features an integrated spout and vent cap for controlled pouring directly into the fill port, and the cardboard outer shell protects the inner bladder during storage.

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