Engines & transmissions · Canada-wide freight · International export





2021 Sierra 2500 L5P 6.6 Duramax Engine & Transmission 18k Miles
Availability to be confirmed
$4,800.00
- Condition
- Please contact our team to confirm.
- OEM number
- Please contact our team for verification.
Please contact our team to confirm product specifications, compatibility and availability before ordering. Ask about this item
Confirm fitment with your VIN. Send your VIN and current engine or transmission code and we will check this unit against your vehicle before fulfilment. Website selections alone do not guarantee fitment.
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Specifications
- Availability
- Availability to be confirmed
Specifications are listed as verified for this unit. Confirm compatibility with your VIN before ordering.
2021 GMC Sierra 2500 L5P 6.6L Duramax Engine & Transmission – 18K Miles
This 2021 GMC Sierra 2500 powertrain package features the 6.6L L5P Duramax turbo-diesel V8 paired with its compatible transmission. Designed for heavy-duty truck applications, the L5P delivers substantial torque and towing capability, making it suitable for demanding work and compatible replacement projects.
The package is listed with approximately 18,000 miles. The reported mileage and exact components should be verified before purchase, particularly when installing the powertrain in a different truck.
Compatible GMC Applications
GMC Sierra 2500HD with matching L5P specifications
GMC Sierra 3500HD, subject to configuration compatibility
Compatible GMC heavy-duty truck replacement projects
Compatible Chevrolet Applications
Chevrolet Silverado 2500HD with matching L5P specifications
Chevrolet Silverado 3500HD, subject to configuration compatibility
Compatible Chevrolet heavy-duty diesel truck projects
Popular Custom Applications
GMC Sierra and Chevrolet Silverado diesel restorations
Heavy-duty work truck replacements
Compatible towing and hauling truck builds
Specialized diesel performance projects
Custom heavy-duty truck builds
Engine and Transmission Highlights
Engine:
GM 6.6L L5P Duramax turbo-diesel V8
Model year:
2021
Mileage:
Approximately 18,000 miles, as listed
Original application:
GMC Sierra 2500HD
Fuel type:
Diesel
Transmission:
Included; exact model and configuration should be confirmed
Ideal for:
Compatible heavy-duty truck replacements and diesel projects
Shipping & warranty
Warranty terms vary by product. Contact us before ordering. Warranty information
Shipping is quoted according to product and destination: freight across Canada and international export. How shipping works
Eligibility depends on the unit and the reason for return. Returns & refunds
Engines and transmissions ship by freight on a pallet. Inspect the shipment when it arrives and note any visible damage with the carrier before signing. Delivery inspection guide
Ask about availability or fitment
Send your details and we will confirm availability and the freight cost to your country before you order. Add your vehicle and VIN if you would like us to check fitment at the same time.













