Reds Automotive and Diesel

When it comes to repairing your gas or diesel engine vehicles, you can't trust just any mechanic. But with AJ's Auto Diesel Technologies on your side, you know you're getting high-quality work you can count on. Cars and trucks Diesel engine performance services and upgrades Intake systems Exhaust systems Turbochargers Aftermarket turbochargers High-performance turbochargers Transmission upgrades Performance tuner installation Suspension lift kits Performance lights Off-road lighting sales and installs Hard starting Low power Poor fuel mileage High engine temperatures Ensure your vehicle is repaired to factory standards - call AJ's Auto Diesel Technologies today to schedule a free consultation!

G & J Diesel Performance Center is a light duty diesel truck repair shop that specializes in the Dodge Cummins, Ford Powerstroke and GM Duramax trucks. With over 20 years serving Billings, MT and the surrounding communities. Our qualified technicians are factory trained and we have the latest diagnostic equipment guaranteed to get the job done right.We install and carry a large selection of quality parts from manufacturers like Garrett Turbo, Bosch, MBRP, FASS, South Bend Clutch, H & S Performance, PPE, Alliant Power, Motorcraft, BD Diesel and Industrial Injection.G & J Diesel has built some of the top trucks in the diesel industry like the DIRTYMAX and Mark Ventling's 1/4 Mile Miracle. We also built the engines for Steve Darnell's Cummins Rat Rods. These trucks have been featured in Diesel Power magazine, with additional articles in Diesel Tech, Diesel World, Hot Rod and 8 Lug magazines. The DirtyMax have also been shown on television episodes of Two Guys Garage and Super Lift.G & J Diesel is Montana's first Bosch Authorized Diesel Service Center. We are also a Garrett Turbo Authorized Dealer as well as members of ADS and SEMA.