A&I Distributors provides quality Diesel Exhaust Fluid (DEF) to support cleaner diesel emissions and reliable operation. DEF is a clear, non-toxic, non-flammable solution made from purified water and urea used in modern diesel systems to reduce nitrogen oxide (NOx) emissions. Whether you need bulk supply or packaged sizes, we’ll help you choose the right format to match your fleet and usage.
Supports reduced NOx emissions
Designed for use in modern diesel emissions systems
Helps keep equipment operating within emissions requirements
Optimized combustion
Better fuel efficiency
Increased power
Reduced maintenance
Fewer regenerations
Less wear on the engine
End-to-end DEF supply in the quantities your operation needs—from bulk delivery to packaged cases:
We partner with leading manufacturers for dependable supply
Established in 1924, still family- and employee-owned
9 locations across 8 states for fast, local delivery
We’ll help you select the right DEF format for your equipment and volume
Please contact your local regional sales representative, or call:
o Billings, MT 406-245-6443
o Missoula, MT 406-549-2341
o Mandan, ND 701-222-8790
o Spokane, WA 509-535-7820
o Rapid City, SD 605-348-2601
o Boise, ID 208-376-9596
o Chubbuck, ID 208-478-6501
o Tualatin, OR 503-905-2245
Please contact your local regional sales representative, or call:
o Billings, MT 406-245-6443
o Missoula, MT 406-549-2341
o Mandan, ND 701-222-8790
o Spokane, WA 509-535-7820
o Rapid City, SD 605-348-2601
o Boise, ID 208-376-9596
o Chubbuck, ID 208-478-6501
o Tualatin, OR 503-905-2245
Please contact your local regional sales representative, or call:
o Billings, MT 406-245-6443
o Missoula, MT 406-549-2341
o Mandan, ND 701-222-8790
o Spokane, WA 509-535-7820
o Rapid City, SD 605-348-2601
o Boise, ID 208-376-9596
o Chubbuck, ID 208-478-6501
o Tualatin, OR 503-905-2245
Click here to apply for an account.
Expert Customer Service
If you have any questions about the services we provide, the products we sell or would like to become a customer, please contact us using the form.