Southwest Diesel Service

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1150 E 350 N
Saint George, UT 84770
Southwest Diesel Service Inc. of Saint George, UT is a factory authorized parts & service dealer for Cummins, Caterpillar and Detroit Diesel. Southwest Diesel also specializes in Freightliner, Sterling, Westernstar, Dodge Cummins, Ford Powerstroke,

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4.511 reviews
Esther N.
8/30/2025

Southwest Diesel was the only shop to call me back, I left messages at 5 shops with good reviews to some maintenance done on my RV, they returned my call and put me on the schedule and were very...

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Ryan M.
6/26/2024

I was losing power going up hill in my 40' diesel pusher. I noticed my air filter hose was partially torn. After calling multiple diesel mechanics and all saying they could take a look at it in a...

Gary M.
4/14/2023

Class A Motorhome had an overheating issue, called and Spoke with owner Darren. He said they would work us in so we were towed there. Three long time diesel mechanics , Darren, Doug, and Rex...

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Mindy W.
6/16/2022

Professional, courteous and very knowledgeable in the field of Diesel mechanics and repairs. They are backlogged for a reason! Because they stand by there word and products they sell. The girls...

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Travis J.
10/17/2019

This is a great place to get repairs at. Found the problem got a replacement part and had us rolling the same day. Great customer service, great mechanics would recommend to anybody.

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