Heavy Duty Done Right

A family owned-and-operated company located in Mid-Michigan, your #1 trusted source for remanufactured diesel engines. Serving Hundreds of customers nationwide.

Call Now: (810) 221-7181

Remanufacturing Diesel Engines

Contact us today to have your engine remanufactured, or for more information about our remanufacturing process.


Shop our current inventory of remanufactured engines, engine kits, and parts.

We are here to help, 24/7 troubleshooting available! Engine questions? We have solutions!

We Supply All Your Heavy Duty Engine Needs

We supply HD Diesel engine parts. New, used and remanufactured parts. O.E. and O.E.M quality parts.

Engine Rebuild Kits



Cylinder heads



And much more!

Fisher Power Supply LLC

Leaders in the Heavy-Duty Diesel industry, Fisher Power Supply LLC is your one stop shop for all your diesel needs. We assemble all of our remanufactured diesel engines right here in house. Here at FPS we do everything we can to ensure a rapid turnaround time. Our diesel technicians assemble every engine with extreme precision to OE specifications. Quality engines that are built to outlast the original! 

With years of experience in this industry, you will not find a better quality product anywhere else. We are one of the few companies that deliver exactly what we promise. We can assure you that your engine will be in the best of hands. Our business was built on honesty and integrity. We believe in doing things right the first time.

Our mission is “Heavy Duty, Done Right!”

Why Choose Us

Rapid Turn-Around Time

Knowledgeable Technicians 

Competitive Pricing

Excellent Customer Service

We ship nationwide!

Remanufacturing Services

Rebuild Cylinder Head(s)

Replace All Wearable Parts

Switch Over All Hard Parts

Test and/or Replace Injectors


Tom went above and beyond to help me. He is an outstanding individual and really cares about his customers. He really does a great job. Highly recommend.  



It’s where I have all my engines built.

Raymond Caldwell


Upstanding young man! Takes pride in his craftsmanship, and delivers a quality product! Don’t overlook this company!

Ken E.


Email Us or Call Toll Free at (866) 414-0939

Fisher Power Supply, LLC: Your Diesel Engine Specialists

Engine Builders Association

Offering diagnostic solutions and troubleshooting 24-7. Call us today. We would love to help with all your heavy-duty engine needs!

Our Warranty Program

At Fisher Power Supply we work hard to ensure the quality of our workmanship and the products we use. We offer a 1-year unlimited miles/hour warranty on our all our remanufactured Diesel engines. For more information on our warranty program click here.