ABOUT US
DK Diesel began doing business in 1973. Owners, John Dagel and Al Kasperson operated out of a small building in Watertown, SD until March 1984 when growth required a move to their current larger facility. Two additional stalls were added in 1992.
In May of 2000, Rex Gerber, Jr. and Blaine Wollman purchased DK Diesel from Dagel & Kasperson. They brought 22 years of combined experience to the company.
In the spring of 2008 a 5,000 square foot addition was added to the Watertown location. Two additional stalls were added that would allow large farm equipment access to the shop to be easier repaired.
In January 2025, Kyle Dillman, one of DK Diesel's employees, purchased the company from Rex and Blaine. Kyle brings an additional 10 years of experience to the company. Rex and Blaine are still with the company in various positions.
DK Diesel is built on one basic idea, and that is to provide area diesel owners with service that is truly exceptional.
Truck & Pickup
Fuel Injection Service and Repair
Reliable Work – Quick and Flexible
Our highly skilled workers set reliable schedules, making long waiting times and time-consuming inquiries a thing of the past. Getting you back in the field quicker.
No Job too Big
or Small
DK Diesel is a factory authorized Fuel Injection shop specializing in all brands of Fuel Injection Pumps, Injectors and Turbochargers.
At DK Diesel we pride ourselves on having on of the nation’s best warranties on all fuel injection components we sell and service.
Our team of dedicated employees is committed to providing quality workmanship and customer satisfaction to all of DK Diesel’s customers across the nation.
DK Diesel has one of the largest exchange programs in the Midwest. With DK Diesel’s vast inventory of over 1000 exchange pumps and 3000 injectors, we are able to provide exchange units for most equipment no matter how old or how new. This service helps to eliminate costly down time for our customers.
We invite you to contact DK Diesel and let us help you solve your fuel system problems.
At DK Diesel we pride ourselves on having on of the nation’s best warranties on all fuel injection components we sell and service.
Our team of dedicated employees is committed to providing quality workmanship and customer satisfaction to all of DK Diesel’s customers across the nation.
DK Diesel has one of the largest exchange programs in the Midwest. With DK Diesel’s vast inventory of over 1000 exchange pumps and 3000 injectors, we are able to provide exchange units for most equipment no matter how old or how new. This service helps to eliminate costly down time for our customers.
We invite you to contact DK Diesel and let us help you solve your fuel system problems.
