Remanufactured Long Blocks
Heavy-Duty Diesel Engine Long Blocks for Caterpiller, Cummins, Detroit Diesel & More
Faster Replacement Options = Less Down Time
Remanufactured Long Blocks — Built to Perform, Engineered to Last
Every long block starts with a foundation of OEM quality. Original equipment blocks are precision-machined and deck surfaces are milled to exacting tolerances. Connecting rods—genuine OE castings—are machined and fitted with new bushings. Crankshafts are either brand new or OE-machined to restore factory specifications.
Cylinder kits are sourced exclusively from industry-leading suppliers like Interstate McBee, IPD, and PAI Industries. C15, C13, N14, and ISX applications ship with brand new cylinder heads. ISM11 and C7 units feature OE remanufactured heads rebuilt through an in-house machine shop—pressure tested, magnafluxed, and fitted with new seals, valves (new or precision-ground), guides, injector cups, and freshly resurfaced.
The result? Remanufactured long blocks built with the precision and quality standards of original equipment—delivering the performance and reliability your operation demands.
Long Block Includes:
- Cylinder Block
- Cylinder Head(s)
- Crankshaft
- Crankshaft Gear
- Cylinder Kits
- Piston Cooling Nozzles
- Connecting Rods
- Cam Bearings
- Gaskets needed to finish assembly
- 1-Year Unlimited Hour/Mile Warranty
We ship nationwide!
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Why Choose Fisher Power Supply?
Fisher Power Supply is committed to quality workmanship and dependable service. Our in-house machine shop allows us to control quality throughout the rebuilding process, ensuring every engine meets demanding performance expectations. Whether you need a complete remanufactured engine, a long block, or expert machining services, our team is ready to help keep your equipment working.
When you need a dependable replacement engine, Fisher Diesel Rebuilding delivers premium remanufactured diesel engine long blocks built to perform in the toughest conditions. Every long block is assembled using precision-machined components and quality parts to provide the durability and reliability your equipment depends on.
Our experienced technicians rebuild heavy-duty diesel engines for a wide range of industries, including trucking, construction, agriculture, marine, municipalities, and industrial equipment. Whether you’re replacing a failed engine or reducing downtime with a ready-to-install long block, we have the expertise to get you back to work quickly.
We specialize in rebuilding engines from leading manufacturers, including:
- Caterpillar C15 Long Blocks
- Caterpillar C13 Long Blocks
- Caterpillar C7 Long Block
- Cummins ISM Long Blocks
- Cummins ISB Long Blocks
- Cummins ISL Long Blocks
- Cummins ISX Long Blocks
- Cummins X15 Long Blocks
- Detroit Series 60 Long Blocks
- John Deere Diesel Long Blocks
- International Diesel Long Blocks
- And many other heavy-duty diesel engines
Every engine benefits from our complete in-house machine shop, where we perform precision machining, cylinder head rebuilding, crankshaft machining, line boring, balancing, resurfacing, valve work, and thorough inspections. Keeping these services under one roof allows us to maintain strict high-quality standards and faster turnaround times.
At Fisher Power Supply, we understand that equipment downtime costs money. That’s why we’re committed to building dependable diesel long blocks that meet OEM specifications while providing exceptional customer service throughout the process.
We service all applications
Industrial- On-Highway- Marine
Agriculture • Construction • Defense • Forestry • Generators • Mining • Production • Rail • Recreational • Commercial Industrial • Trucks • Semis • Yachts • Vessels / Ships
Service Your Engine
Contact us today to have your engine remanufactured, or for more information about our remanufacturing process.
Catalog
Shop our current inventory of remanufactured engines, engine kits, and parts.
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.