The 2017-2019 GMC Sierra 3500 HD 6.6L L5P engine for sale with 59,876 miles is in outstanding condition.
✅ Fully tested, including oil leak inspections and compression testing, to ensure top performance.
✅ A-grade certified for reliability and smooth operation.
✅ Backed by a warranty, this used GMC engine offers a dependable solution for your replacement needs.

Key Specifications:

Brand: GMC
Engine Size: 6.6L (VIN Y, 8th digit, opt L5P)
Mileage: 59,876 miles
Interchange Part Number: 300-10089
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

2017 2018 2019 GMC Sierra 3500 HD 6.6L L5P Engine For Sale

SIERRA 2500 PICKUP 17-19 6.6L (VIN Y, 8th digit, opt L5P)
SIERRA 3500 PICKUP 17-19 6.6L (VIN Y, 8th digit, opt L5P)
SIERRA DENALI 2500 17-18 6.6L (VIN Y, 8th digit, opt L5P)
SIERRA DENALI 3500 17-18 6.6L (VIN Y, 8th digit, opt L5P)
SILVERADO 2500 PICKUP 17-19 6.6L (VIN Y, 8th digit, opt L5P)
SILVERADO 3500 PICKUP 17-19 6.6L (VIN Y, 8th digit, opt L5P)
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