About Us

Diesel Forward - greater than the sum of our parts

Known for our extensive diesel product range and distribution network, Diesel Forward gives you much more than that. We also support you with the technical expertise, ongoing customer service and reliability that make your job easier.

Distributing to the diesel aftermarket, we supply diesel engine fuel systems and technical components for light, medium and heavy-duty vehicles and equipment. Our company and its Alliant Power brand distribute new and remanufactured parts through our growing network of central distributors and more than 500 service dealers worldwide. 

We're also the largest distributor of top OEM brands to the domestic aftermarket, including national fleet accounts, through our company-owned warehouses spread across four U.S. time zones.

Always striving to find better ways to serve our customers, Diesel Forward also operates a fuel system remanufacturing facility and a state-of-the-art service, training and product development center that has grown to become an industry model for best practices.

A long history of performance  

Diesel Forward was established in 1961 as Diesel Injection Service (DIS), a fuel injection rebuild service center in south central Wisconsin. 

During the '80s and '90s, we expanded into diesel parts distribution for major OEMs and increased our distribution territory throughout the Midwest and Northeast through acquisition.

In 2002, born out of a strategic relationship with Caterpillar Fuel Systems, Diesel Forward launched its Alliant Power brand. Alliant Power now distributes new and remanufactured engine components around the world.

Seeing a new opportunity for growth in 2018, we acquired California based H.G. Makelim Co. and expanded our aftermarket distribution footprint to cover more than 50% of the U.S. 

Driven by these past successes, Diesel Forward is proud to continue building the first-class customer service, technical expertise and broad product offering that attracts customers worldwide.


To learn more, click the image to review Diesel Forward's Company Brochure