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.
With DEF blending operations in Billings, Montana, and distribution branches across the West, A&I supplies bulk and packaged DEF to meet the needs of fleets, businesses, and equipment operators. Contact your local branch to discuss product availability and delivery options in your area.
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
A&I serves businesses through regional branches in Billings, Missoula, Boise, Pocatello, Spokane, Arlington, Portland, Medford, Mandan, Rapid City, and Aurora. Contact your nearest branch to discuss local DEF availability and delivery.
We’ll help you select the right DEF format for your equipment and volume
A&I offers bulk DEF delivery throughout its regional service areas. Contact your nearest A&I branch with your location and estimated DEF needs to confirm delivery availability, ordering options, and lead times.
A&I Distributors supplies Diesel Exhaust Fluid (DEF) from Billings, Montana, with local blending operations and bulk and packaged purchasing options. Contact our Billings branch to discuss product availability, pricing, and delivery.
Current A&I customers can place orders online through the Customer Portal. You can also 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
New customers can apply for an A&I account through the Customer Portal or visit our Apply for Account page. Existing A&I customers can also request portal access.
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.