Cargo ship sailing on the open sea.

No matter your industry, reliability in your supply chain is non-negotiable We’re here to deliver it

From over-the-road trucking to global shipping, Cornerstone DEF Distributors deliver Bulk AUS40 Delivery Texas, Louisiana, Alabama, Mississippi, Florida your business depends on—with speed, service, and compliance top of mind.

Industries We Service

Marine Vessels & Ports

 We provide reliable bulk delivery of DEF, AUS40, fuel, oil, lubricants, coolant, antifreeze, grease, and washer fluid to vessels and port facilities — ensuring compliance with maritime emission regulations and operational readiness.

Trucking & Logistics

 We offer fast, flexible deliveries of DEF, fuel, oil, lubricants, coolant, and maintenance fluids tailored for trucking fleets and logistics hubs — supporting fuel efficiency, uptime, and EPA compliance across the road.

Construction & Heavy Equipment

 We deliver high-quality DEF, AUS40, fuel, lubricants, oil, antifreeze, coolant, grease, and washer fluid directly to job sites and equipment yards — helping crews power through with fewer delays and maximum compliance.

Agriculture & Farming

We supply DEF, fuel, oil, lubricants, coolant, antifreeze, grease, and washer fluid to farms and large-scale operations — supporting peak performance and reliability for tractors, harvesters, and irrigation engines.

Municipal & Government Fleets

 We ensure secure and consistent delivery of DEF, fuel, oil, lubricants, and related fluids for city, county, and state vehicles — helping agencies meet emission standards and extend fleet life with dependable supply.

Fuel & Energy Distributors

We partner with fuel and energy distributors to provide bulk supply of DEF, AUS40, fuel, lubricants, and fluids — helping expand your product line, improve service coverage, and increase revenue potential.

Partnering With Us

 Whether you’re managing a single fleet or multiple high-demand sites, Cornerstone DEF Distributors delivers speed, service, and fluid solutions built around your industry — on land or at sea.

Explore Partner Program