Diesel Engine & Injection Service
"Where the Quality Starts"
After gaining more than 10 years experience working on farm tractors and heavy equipment with a Caterpillar dealership. In November of 1960, Mr. Alton (Sonny) Koenning founded our company Diesel Engine & Injection Service, Inc. in Corpus Christi, TX.
While initially starting off rebuilding all types of diesel injection pumps, injectors, governors, and restoring particulate filters, over the years our company has continued to grow to include the sales of diesel engine parts, turbo chargers and complete diesel engine assemblies. We now currently represent 10 different diesel engine manufacturers for service and sales, and are dealers for Bosch, Stanadyne, Delphi, Denso, Yanmar and Zexel fuel injectors.
For more than 65 years, our family owned and operated company has continued it's legacy as the leader in Diesel Injection pump, injector rebuilding service, and parts distributor in the Corpus Christi, TX area.
In 1982 we expanded our business operations to San Antonio, TX and now provide additional services including complete diesel engine repair, diagnostics, and installation services. We offer a drive in service for industrial equipment, and a mobile service truck available to the San Antonio and surrounding areas.
With decades of expertise, we have been the trusted partner for Corpus Christi and San Antonio's heavy-duty fleet and industrial sectors. Our history is built on precision and reliability, ensuring every fuel system component and diesel engine we service meets the highest technical standards.