Allied Diesel is your trusted small business diesel repair shop.



We carry the best products on the market for your light or medium duty truck. Not only from the top manufactures, but we also offer our own line of USA made products. During your service we will recommend quality products due to our experience with installation. 

Diesel Repair

No job is too big or small. Allied Diesel can help you get back on the road. If you just need a regular service or complete engine repair. We offer a fair price with impeccable service. 


We offer all welding in house. Our long history of being master fabricators gives us pride in the craftsmanship we put forward into customer jobs. We have handled custom flat bed work, heavy duty equipment repairs, custom motor mounts, and truck bed modification just to name a few. Having professional welds not only looks good, but provides long lasting strength your truck will need. 

Family Owned and Operated

Allied Diesel is a local family owned and operated diesel repair shop. 

We take pride in all the work we do! We are proud to be owner operated and your local small business diesel repair shop. Born and raised in Windsor, CA we love being a part of this community. 

Located in the heart of Sonoma County directly off highway 101, we strive to ensure every customer leaves happy and that we treat your vehicle as if it were our own. Our well respected reputation with 12 & 24 valve Dodge Cummins engines makes that our specialty, but we can service all makes and models of diesel vehicles. Reach out today to become an Allied Diesel customer! We look forward to hearing from you.