The 2007-2010 GMC Sierra 3500 HD 6.6L LMM engine for sale is a low-mileage, A-grade certified unit, carefully sourced from a well-maintained truck to ensure long-lasting durability and peak performance.

Fires up instantly with a strong crank, delivering smooth and powerful operation.
Compression and leak-tested, ensuring optimal fuel efficiency and engine reliability.
Free from rust, sludge, or internal wear, making it a solid long-term replacement.
Backed by a warranty, providing confidence and peace of mind with your purchase.
Removed from a properly serviced vehicle, ensuring a hassle-free installation and seamless integration.

Mechanic-inspected and tested under real working conditions for towing strength, fuel system precision, and turbocharger efficiency, this used GMC engine is the perfect solution to restore your Sierra 3500 HD’s power, torque, and heavy-duty capability.

Key Features:

Brand: GMC
Engine Size: 6.6L, VIN 6 (8th digit, opt LMM)
Mileage: 58,087 miles
Interchange Part Number: 300-05766A
Part Grade: A (Certified)
Part Category: U (Used)
Performance: Engineered for reliable power and optimized fuel efficiency
Warranty: 1-year warranty included
Shipping: Fast, free delivery to commercial addresses

2007 2008 2009 2010 GMC Sierra 3500 HD 6.6L LMM Engine For Sale

$6,700.00

$6,298.00

EXPRESS 2500 VAN 10 6.6L, VIN 6 (8th digit, opt LMM)
EXPRESS 3500 VAN 10 6.6L, VIN 6 (8th digit, opt LMM)
SAVANA 2500 VAN 10 6.6L, VIN 6 (8th digit, opt LMM)
SAVANA 3500 VAN 10 6.6L, VIN 6 (8th digit, opt LMM)
SIERRA 2500 PICKUP 07 new style (smooth door skin), 6.6L (VIN 6, 8th digit, opt LMM)
SIERRA 2500 PICKUP 08-10 6.6L (VIN 6, 8th digit, opt LMM)
SIERRA 3500 PICKUP 07 new style (smooth door skin), 6.6L (VIN 6, 8th digit, opt LMM)
SIERRA 3500 PICKUP 08-10 6.6L (VIN 6, 8th digit, opt LMM)
SILVERADO 2500 PICKUP 07 new style (smooth door skin), 6.6L (VIN 6, 8th digit, opt LMM)
SILVERADO 2500 PICKUP 08-10 6.6L (VIN 6, 8th digit, opt LMM)
SILVERADO 3500 PICKUP 07 new style (smooth door skin), 6.6L (VIN 6, 8th digit, opt LMM)
SILVERADO 3500 PICKUP 08-10 6.6L (VIN 6, 8th digit, opt LMM)
This fully assembled long block includes all the essential components you need for installation, such as:

Complete Engine Assembly

Intake Manifold

Exhaust Manifold

Fuel Injectors

Throttle Body

Alternator

Power Steering Pump

Water Pump

A/C Compressor

Engine Wiring Harness
When you're buying an engine, you want something that's tested, reliable, and ready to go. That's what you're getting here:

Fully Tested: Every engine I sell has been compression tested, checked for oil pressure, and run at operating temperature to ensure you won’t run into any surprises after installation.

Complete Package: It’s a long block, which means all the core components are included. No hunting around for separate parts.

1-Year Warranty: You get peace of mind with a full 1-year manufacturer warranty, so if there’s any issue with the engine, you’re covered.

OEM Quality: This isn’t a rebuild or aftermarket part. It’s an OEM engine, so you can trust it’ll fit and perform just like the original.
Shipping can be arranged to either a business or residential address. If you’re having the engine shipped to a residential location, just note that there may be an extra charge. Once it arrives, we recommend inspecting the shipment thoroughly before signing off, especially if there's visible damage. If anything looks out of place, make sure it’s documented.
When it comes to installation, you may need to transfer over some of your existing accessories like the manifolds.

This is standard with most engine swaps, so your mechanic will know what to do.
For any questions regarding compatibility or shipping details, please feel free to reach out! Ensure this engine fits your vehicle by verifying the VIN and specific requirements before purchase