Used GMC Engines
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Used GMC Engines for Sale — OEM, VIN-Matched, 90-Day Warranty
We stock over 350 used OEM GMC engines, including Duramax diesels, pulled from low-mileage donor vehicles and matched to your vehicle by VIN before they ship. Every unit is a factory-original GMC engine assembly: not rebuilt, not remanufactured, not aftermarket.
How fitment works
GMC used multiple engine variants within the same displacement, separated by option code, VIN digit and emissions specification — and on the diesels the option code is often the only thing that tells them apart. You do not need to decode any of that yourself. Give us your VIN, or just your year and model, and we confirm the exact engine against your vehicle before it ships.
Mileage options
Every engine is listed in mileage brackets, so you can trade cost against expected service life. The exact odometer reading is documented and photographed for the unit you receive.
Warranty, freight and cancellations
90-day warranty from the day the part is delivered. Freight is flat-rate — $250 to a commercial address, $400 residential — shown at checkout and never added later. Cancel within 24 hours of ordering for a full refund. After 24 hours, cancellations and returns carry a 30% restocking fee on the order value, and freight is paid by the customer in both directions.