Family-Owned • Woman-Owned • Fourth-Generation Leadership • Serving the Southwest Since 1947
DEF · ISO 22241 compliant

Diesel Exhaust Fluid

Protect emissions-system performance with high-purity Diesel Exhaust Fluid for modern diesel engines. Pioneer delivers DEF in the package sizes and quantities your operation needs.

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Built for the work ahead

Where it fits your operation

Class 8 trucks and regional delivery fleets

Construction and agricultural equipment with SCR systems

Municipal, school, and transit fleets

Packaged DEF for maintenance shops and smaller operations

Why operations choose Pioneer

32.5% high-purity urea solution
Meets ISO 22241 specifications
Reliable replenishment to avoid compliance-related downtime
Pioneer Distributing Company

Arizona's family-owned fuel and lubricant distributor. Serving the Southwest since 1947 with unmatched reliability and direct account relationships.

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Phoenix Headquarters

Tucson Location

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