Customer Reviews
23042 N. 16th Lane, Phoenix, AZ
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!
23042 N. 16th Lane, Phoenix, AZ
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.
23042 N. 16th Lane, Phoenix, AZ
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
23042 N. 16th Lane, Phoenix, AZ
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