Arkansas Valley Diesel Service, Inc. has a strong 33+ year history in Southeastern Colorado and the tri-state region. Founded by Gene La Cost in 1982, Arkansas Valley Diesel has grown into the only first rate parts & service facility in the region with strong parts & service partnerships. As long standing authorized dealers for Detroit Diesel and Cummins engine parts & service, Arkansas Valley Diesel added Navistar/International to it’s list of authorized dealerships in early 2014. It joins Freightliner/Western Star/Sterling, Peterbilt and Mack for authorized dealership agreements. Arkansas Valley Diesel Service, Inc. is proud to be your one stop shop for EVERYTHING heavy duty!