Used 6.6L Duramax Diesel Engine for Sale – Tested Complete Long Block with Turbo & Harness, Low Mileage OEM Replacement
Used 6.6L Duramax Diesel Engine for Sale – Tested Complete Long Block with Turbo & Harness, Low Mileage OEM Replacement
Product Overview
The Used 6.6L Duramax Diesel Engine is a high-performance V8 turbocharged diesel powerplant designed for heavy-duty pickup trucks and commercial applications. Known for its strong torque output, durability, and towing capability, this engine is a preferred OEM replacement solution for workshop rebuilders, fleet operators, exporters, and vehicle owners seeking a cost-effective alternative to a brand-new engine.
Each engine is compression tested, visually inspected, and verified for major component integrity prior to dispatch. Available as a complete long block or dressed engine package depending on customer requirements.
Key Features & Benefits
- 6.6L V8 Turbocharged Diesel Configuration
- Strong low-end torque for towing and hauling
- OEM factory engine (not remanufactured unless specified)
- Cost-effective replacement solution
- Suitable for fleet maintenance & export markets
- Compression tested before shipment
- Optional accessories available
- Secure palletized export packaging
Compatible Applications
This 6.6L Duramax engine is commonly used in heavy-duty pickup trucks such as:
- Chevrolet Silverado 2500HD
- Chevrolet Silverado 3500HD
- GMC Sierra 2500HD
- GMC Sierra 3500HD
(Model compatibility depends on engine code/year — please confirm VIN before purchase.)
Technical Specifications
| Specification | Details |
|---|---|
| Engine Type | 6.6L V8 Turbocharged Diesel |
| Configuration | 90° V8 |
| Displacement | 6.6 Liters (403 CID) |
| Fuel System | High-Pressure Common Rail Direct Injection |
| Aspiration | Turbocharged (Variable Geometry Turbo depending on model) |
| Cooling System | Liquid Cooled |
| Block Material | Cast Iron |
| Cylinder Heads | Aluminum |
| Valvetrain | OHV, 4 Valves per Cylinder |
| Compression Ratio | Approx. 16.0:1 (varies by generation) |
| Horsepower Range | 300 – 445 HP (depending on year/model) |
| Torque Range | 520 – 910 lb-ft (depending on year/model) |
| Emission System | EGR / DPF / SCR (varies by model year) |
| Fuel Type | Ultra Low Sulfur Diesel |
| Engine Condition | Used – Tested & Inspected |
| Mileage Range | Low to Moderate (varies by stock availability) |
| Warranty | 30–90 Days Limited Warranty (optional extended coverage available) |
| Packaging | Heat-treated export pallet, shrink-wrapped |
Available Package Options
We offer flexible supply formats depending on your needs:
1️⃣ Long Block
- Engine block
- Cylinder heads
- Internal rotating assembly
2️⃣ Complete Engine Assembly
- Long block
- Turbocharger
- Fuel injectors
- High-pressure fuel pump
- Intake & exhaust manifolds
- Wiring harness (uncut, optional)
- ECU (optional)
- Starter & alternator (optional)
Inspection & Quality Control
Before shipment, each engine undergoes:
- Compression testing
- Visual inspection
- Oil contamination check
- External damage inspection
- ID verification
- Leak check (where applicable)
Startup video available upon request (if engine is in running condition before removal).
Why Choose Our Used Duramax Engines?
✔ OEM factory original engine
✔ Export-ready packaging
✔ Competitive wholesale pricing
✔ Fast global shipping
✔ Suitable for mechanics, rebuilders & exporters
✔ Bulk order discounts available
Shipping & Logistics
- Worldwide shipping available
- Air freight or sea freight options
- Proper documentation provided for export
- HS Code documentation available upon request
Ideal For
- Engine replacement projects
- Fleet repair & maintenance
- Auto workshops
- Export traders
- Performance rebuild base platform
Ordering Information
To receive an accurate quotation, please provide:
- Vehicle VIN number
- Model year
- Required engine code
- Delivery address
- Contact name, email & phone number
Our team will confirm compatibility and provide pricing, availability, and shipping cost promptly.
Important Notice
This is a used OEM engine. Normal cosmetic wear may be present. Availability varies depending on stock. Specifications may differ slightly depending on engine generation (LB7, LLY, LBZ, LMM, LML, L5P). Please confirm exact model before purchase.
If you are looking for a reliable, tested 6.6L Duramax diesel engine for your heavy-duty truck, contact us today for stock availability and best wholesale pricing.






