I took them a part to fix and they put it backwards they fixes it right away but the mechanic charged me to fix it again

Terry has been my go to guy for diesel items for over 25 years. These guys are very knowledgeable, helpful and reasonable. I have moved to Arizona, but still buy from them as no one else is as helpful. Dont waste your time or money anywhere else. You can count on Diamond Diesel for all your diesel needs.

Great guys

Terry is Very honest Id recommend this shop to anyone

Knowledge of diesel fuel injectors superb, customer service is genuine - no hype just the facts.

Great place and very serviceable people to deal

Professional and knowledgeable with diesel parts, recommend here first

Outstanding service, highly knowledgeable, and experienced.Thanks for the help ARMY Brian.

I work here its great!

Great