Premium Remanufactured Diesel Engines & Transmissions — US Engine Production
US Engine Production is America's trusted supplier of premium remanufactured diesel engines and transmissions. With over 40 years of experience and a database of more than 112,000 remanufactured engines, we provide quality you can trust at prices you can afford. Every engine we sell is completely disassembled, inspected, machined to OEM tolerances, assembled with new components, and dynamometer tested before shipping.
Whether you need a heavy-duty Class 8 engine for over-the-road trucking, a medium-duty diesel for your pickup truck, or a marine/industrial powerplant, US Engine Production has the remanufactured engine you need — backed by our 1-year unlimited mileage warranty and free phone support at (631) 991-7700.
Why Choose US Engine Production for Your Remanufactured Engine?
Not all remanufactured engines are created equal. Here is what sets US Engine Production apart from other suppliers:
- Complete Remanufacturing (Not Just a Rebuild) — Every engine is fully disassembled and every component is restored to OEM specifications or replaced with new. We do not leave worn parts in place like a "rebuilt" engine shop.
- Dynamometer Tested — Every engine runs on our dyno to verify horsepower, torque, oil pressure, and leak-free operation before it leaves our facility.
- 1-Year Unlimited Mileage Warranty — No mileage caps, no fine print. If it fails due to a manufacturing defect within one year, we cover it regardless of miles driven.
- Nationwide Shipping in 3-7 Days — Most engines ship within 24-48 hours via freight carrier to anywhere in the continental United States.
- OEM or Better Specifications — Our precision machining achieves tolerances that meet or exceed the original manufacturer's specifications.
- 40+ Years of Experience — Our technicians have decades of hands-on experience with every major diesel engine platform.
- Free Phone Support — Call (631) 991-7700 anytime for technical questions, installation help, or to get a free quote.
Popular Remanufactured Diesel Engines
These are the most commonly requested remanufactured diesel engines. Click any engine to search our inventory for available units:
- Cummins ISX 15.0L — The industry-standard Class 8 engine with 400-600 HP, known for exceptional durability and 1,000,000+ mile potential.
- Detroit Diesel DD15 14.8L — Freightliner and Western Star workhorse featuring asymmetric turbo and compacted graphite iron block.
- Caterpillar C15 15.2L — Legendary ACERT engine with 435-625 HP, preferred by owner-operators for its bulletproof reliability.
- Ford 6.7L Power Stroke — Ford Super Duty diesel with reverse-flow heads and compacted graphite iron block, 440-475 HP.
- GM Duramax 6.6L — Silverado/Sierra HD diesel with DOHC 32-valve design, 445 HP and 910 lb-ft torque (L5P generation).
- Cummins 6.7L ISB — RAM pickup diesel delivering 370-420 HP with proven inline-6 reliability and excellent towing capability.
- Detroit Diesel Series 60 — The engine that revolutionized Class 8 trucking — first electronically controlled heavy-duty diesel.
- Mack MP7 11.0L — Volvo-designed medium-bore engine for regional haul and vocational applications, 325-425 HP.
Browse Remanufactured Engines by Manufacturer
We carry remanufactured engines from every major diesel engine manufacturer. Select a brand below to browse available engines:
- Cummins Engines
- Caterpillar Engines
- Detroit Diesel Engines
- Ford Engines
- GM Engines
- Chrysler Engines
- International Engines
- John Deere Engines
- Perkins Engines
- Isuzu Engines
- Mitsubishi Engines
- Toyota Engines
Our Remanufacturing Process — What Makes Us Different
Every remanufactured engine from US Engine Production goes through our comprehensive 9-step process that returns the engine to like-new condition:
- Complete Disassembly — Every component removed and cataloged for individual inspection
- Cleaning & Crack Inspection — Hot tank cleaning followed by magnetic particle and dye-penetrant crack detection
- Precision Block Machining — Deck surfacing, cylinder bore honing with torque plates, and main bearing align-honing
- Crankshaft Reconditioning — Grinding, polishing to 4-8 microinch finish, and dynamic balancing
- Cylinder Head Work — Pressure testing, 3-angle valve job, guide replacement, and spring testing
- Assembly with New Components — New pistons, rings, bearings, timing set, oil pump, and complete gasket set
- Torque Verification — Every critical fastener torqued to OEM specifications with calibrated equipment
- Dynamometer Testing — Full power verification, oil pressure check, and leak-free operation confirmed
- Shipping Preparation — Preservation coating, sealed openings, and protective pallet packaging
This is the same standard used by original equipment manufacturers when building brand-new engines. The result is an engine with the same life expectancy as new — at 40-60% less cost.
Industries We Serve
US Engine Production supplies remanufactured engines to customers across every industry that depends on diesel power:
- Over-the-Road Trucking — Fleet operators and owner-operators running Freightliner, Peterbilt, Kenworth, Volvo, Mack, and International trucks
- Construction & Mining — Caterpillar, John Deere, and Komatsu equipment engines for excavators, loaders, dozers, and haul trucks
- Agriculture — John Deere, Case IH, and New Holland tractor and combine engines
- Marine — Cummins, Caterpillar, and Detroit Diesel marine propulsion and generator engines
- Power Generation — Standby and prime power generator set engines for hospitals, data centers, and commercial facilities
- Pickup Trucks & Light Commercial — Ford Power Stroke, GM Duramax, and RAM Cummins engines for work trucks and personal vehicles
- Municipal & Government — School bus, fire truck, ambulance, and utility vehicle engines
Remanufactured vs Rebuilt vs Used — Understanding Your Options
When your engine fails, you have several replacement options. Understanding the differences is critical to making the right investment:
| Option | What It Means | Warranty | Expected Life |
|---|---|---|---|
| Remanufactured | Completely disassembled, every component restored to OEM spec or replaced new | 1 year unlimited miles | Same as new engine |
| Rebuilt | Only obviously worn parts replaced; near-end-of-life components remain | 6-12 months limited | 50-70% of new |
| Used/Junkyard | Pulled from another vehicle with unknown history and wear | 30-90 days | Unknown/risky |
A remanufactured engine costs more upfront than a used or rebuilt unit, but delivers dramatically better value per mile of service. With our 1-year unlimited mileage warranty, you eliminate the risk of an early failure that could cost thousands in additional towing, labor, and downtime.
Get a Free Quote Today
Ready to get your vehicle back on the road? Call US Engine Production at (631) 991-7700 for a free, no-obligation quote on any remanufactured engine. Our experts will help you find the right engine for your application, answer technical questions, and arrange fast shipping to your location.
You can also search our engine database online to find available engines by year, make, model, or engine type. Most orders ship within 24-48 hours.
Frequently Asked Questions About Remanufactured Engines
- What is the difference between a remanufactured engine and a rebuilt engine?
- A remanufactured engine is completely disassembled, and every component is restored to OEM specifications or replaced with new parts. A rebuilt engine only replaces the parts that have visibly failed, leaving near-end-of-life components in place. Remanufactured engines have the same life expectancy as a new engine, while rebuilt engines typically last 50-70% as long.
- What warranty do you offer on remanufactured engines?
- All of our remanufactured engines come with a 1-year unlimited mileage warranty. There are no mileage caps and no fine print. If the engine fails due to a manufacturing defect within one year of installation, we cover it regardless of how many miles you have driven.
- How long does shipping take?
- Most remanufactured engines ship within 1-3 business days from our facility. Standard delivery to anywhere in the continental United States takes 3-7 business days via freight carrier. Expedited shipping is available for urgent needs.
- Do you offer core return credits?
- Yes. We offer core return credits on most engines and transmissions. After your remanufactured engine is installed, you ship your old engine core back to us and receive a credit. The core must be complete and rebuildable (not seized, cracked, or missing major components).
- What brands of engines do you remanufacture?
- We remanufacture engines from all major diesel engine manufacturers including Cummins (ISX, ISB, ISL, 4BT, 6BT), Caterpillar (C15, C13, C12, C7, 3406), Detroit Diesel (DD15, DD13, Series 60), Ford Power Stroke (6.7L, 6.0L, 7.3L), GM Duramax (L5P, LML, LBZ, LLY), International/Navistar (DT466, MaxxForce), Mack (MP7, MP8), Volvo (D13, D11), John Deere, Perkins, Isuzu, and more.
- Are your remanufactured engines dyno tested?
- Yes. Every single engine is run on our dynamometer before shipping. We verify horsepower output, torque, oil pressure, compression across all cylinders, and check for any leaks. Only engines that pass all tests are approved for sale.
- Do you sell remanufactured transmissions too?
- Yes. We offer remanufactured Allison automatic transmissions (1000, 2000, 3000, and 4000 series) and Eaton Fuller manual and automated transmissions (10-speed through 18-speed, AutoShift, and UltraShift Plus). All transmissions are rebuilt to OEM specs and dyno tested with the same 1-year warranty.
- How much does a remanufactured diesel engine cost?
- Pricing varies by engine model and configuration. Light-duty pickup truck engines (Ford 6.7L, Duramax 6.6L, Cummins 6.7L) typically range from $5,000-$9,000. Heavy-duty Class 8 engines (Cummins ISX, Detroit DD15, Cat C15) range from $8,000-$18,000. Call (631) 991-7700 for an exact quote.
- Can I install the engine myself or do I need a mechanic?
- While experienced mechanics and fleet shops regularly install our engines, we recommend professional installation to ensure proper setup and to maintain your warranty coverage. We provide installation guides and our technical support team is available by phone to assist during the install process.
- Do you ship internationally?
- Yes. We ship remanufactured engines to over 50 countries worldwide including Canada, Mexico, United Kingdom, Germany, Australia, Saudi Arabia, Nigeria, Brazil, and many more. We handle all export documentation and customs clearance.