Customer Reviews
Honest guys to work with.
Dalton C.
Honest guys to work with. Have gotten a few 48re parts from them and have gotten a Allison build done by them and was on a tight time frame and they got it done quickly!
Great company
Juan C.
I would highly recommend Tier One Diesel. Dealing with Tanner was always easy, he was prompt with any call and question that I had. They are a great company.
Exceptional to work with
Thomas B.
I have been using a tier one valve body ever since I ventured into automatics in 2018 (I think). Matt has been nothing but exceptional to work with
Amazing service
Alexandria R.
Been having car issues so I called tier one diesel. Fixed my overheating issues and my ac has never blown cold air so I’m a blessed mom. Same day fix, and amazing service. Highly recommend!
23042 N. 16th Lane, Phoenix, AZ 85027
Mon-Fri7:00am - 5pm
SundayClosed
SaturdayClosed