About Us and our Services

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We started Moonlight Diesel back in 1996 as a one-man operation working out of our garage and we pride ourselves in maintaining that same warm and friendly family-business environment for our customers today. 

Over the years, we’ve added several members to our team and outgrown two locations!  We invite you to come in for excellent service and enjoy our clean, comfortable waiting area and beautiful store while our expert technicians take care of your diesel in our state-of-the-art shop.

In addition to standard shop services, we offer unique products that we have specially developed and manufactured to solve hard-to-repair and recurring problems commonly seen in diesels.  We have been involved in diesel sled pulling for many years which has allowed us to design and test many products to extreme conditions.  We continue to prototype products for both repair and performance, and we’re pleased to offer the benefits to our customers!




Moonlight Diesel is a repair and performance shop specializing in all things diesel!  We do everything from maintenance to major overhauls, and we have all the diesel diagnostic equipment, specialty tools, and experience to get the job done right.

  • Light to Heavy Duty

  • Maintenance

  • Repairs

  • Transmissions

  • Engines

  • Drivetrains

  • Fuel Systems

  • Emissions

  • Diagnostics

  • Injector Testing

  • Custom Tuning

  • Parts

  • Accessories

  • Pre-purchase Inspections


The fuel system is at the heart of the diesel engine.  As an authorized dealer, we have the experience, training, parts, and equipment to properly diagnose and repair your engine and its fuel system.

Bosch Drive-in Service Center

Fuel Injection Diagnostics

Injector Testing

Large inventory of Genuine Bosch parts

Alliant Power Dealer

Fuel Injection Parts

Quality line of new & reman parts 

Large inventory of Alliant Injectors

Authorized Stanadyne Dealer

Fuel Injection Parts & Service

Fuel Additives

Aftermarket Fuel Injection Systems

F1 Diesel

Dynomite Diesel

FASS Fuel Systems


We understand how important your vehicles are to the successful operation of your business!  We offer everything from General Maintenance to Customized Preventative Maintenance programs for your fleet.  We have state-of-the-art diagnostic equipment available for nearly every vehicle and our ASE Certified Technicians are experts in identifying potential problems.  We use genuine OEM parts and only the highest quality aftermarket parts, oils, filters & repair items to ensure the best possible care for your vehicles. 

How can you benefit?


¨ Lower costs over the life of your fleet

¨ Prevent costly & unnecessary repairs

¨ Less downtime for your vehicles

¨ Price Incentives for parts & service

¨ Priority Scheduling

¨ Pick up/Drop off service for units & drivers

¨  After hours repair work available to get your trucks back to work ASAP



The new emissions systems on diesels are becoming ever more complex.  We can help you keep your emission systems in good health, so they don’t leave you stranded!

  • Testing & Diagnostics

  • Maintenance & Repair

  • OEM replacement parts



Don’t let truck problems ruin your vacation—maintain now so you don’t break down later! 
Our team of expert technicians is here to help prevent repairs, not just perform them! 

  • Complete bumper to bumper service & repair

  • Service includes a full inspection & recommendations for upcoming repairs

  • State-of-the-art diagnostic equipment for nearly every vehicle

  • Personalized maintenance schedule

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We are your Bosch and Alliant

Full Service Diesel Repair Center

Store & Shop Hours

Mon-Fri 8am-6pm


3280 N. Main

North Logan, Utah 84341

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