These guys are phenomenal! Had them install a transfer case for me and an electrical clip break off after I left their shop. I went back and they found the problem and fixed it right away! Keep it up y'all! - Kevin J. (5 star review on Google)

Fair and quick! Quality work and friendly! I bring my personal and fleet vehicles to My Master Mechanic and have no reason to look elsewhere! I’m very happy! - David S. (recommended on Facebook)

Dennis Bertles a Navy Seabee Veteran

At Mr. Diesel & Auto Repair in Cheyenne we provide only the best products to our customers and that’s why we are proud to partner with Jasper Engines and Transmissions. Every day at our shop we provide repairs for a multitude of customers who truly rely on JASPER products to keep their vehicles going strong. Meet Mr. Dennis Bertles, a Navy Seabee veteran and an awesome guy that loves his JASPER products. He depends on JASPER’s 3-year, 100,000-mile warranty and loves the products that they offer.  Mr. Bertles has a Jasper Vortec 5.3L long block engine replacement and a Jasper transfer case replacement in his 2005 Tahoe. Thank you Mr. Bertles for your service to our country and for your dedication to the JASPER brand.

Traveling through on my way to West coast with a horse trailer at a AC compressor go bad. I called in to Mr. Diesel, and they got me in right away. Very nice job--thank you for getting me in and short notice and back on the road. These are very nice people to work with. Good prices, good people, and well knowledged. - Lee D. (5 star review on Google)

George and the crew are the best at what they do! - Dion G. (5 star review on Google)

At Mr. Diesel & Auto Repair we offer only the best products to our Cheyenne, WY drivers, that’s why we are excited to partner with Jasper Engines and Transmissions. JASPER is known for its great transmissions, some of which are even used in NASCAR. The JASPER 4-Speed Transmission is currently being used by seventeen team/driver combinations during the 2020 Monster Energy NASCAR Cup Series. The 4-Speed transmission is also being used by ten team/driver combinations for the 2020 NASCAR Xfinity Series as well.

Very honest and ethical and are people of their word! - Steve B. (4 star review on Google)

Cylinder Head

At Mr. Diesel & Auto Repair we offer only the best products to our Cheyenne drivers, that’s why we’re excited to announce the newest offering from Jasper Engines & Transmissions. JASPER is the nation’s leader in remanufactured engines and drivetrain products and now they are offering Ford/International 7.3L/444TE Diesel Cylinder Heads.

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