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Duramax Engines
Remanufactured Duramax Engines — Built to Your Exact Serial Number
The 6.6L Duramax diesel is the engine behind Chevrolet Silverado HD and GMC Sierra HD trucks — built for towing, hauling, and high-mileage work. When a Duramax needs more than a repair, Pilot Engines remanufactures the 6.6L to your exact engine serial number as a Long Block or Long Block Supreme.
What You're Getting
Every Duramax remanufacture uses OE parts, with every component inspected before assembly. Long Block and Long Block Supreme units are SIM tested before they ship. The build meets OEM performance specs — so the engine going back into your truck performs like it should.
How it Works
Your engine serial number is the starting point. Share it with us and we'll confirm the right configuration for your application. Round-trip freight is prepaid within the continental US, and we stand behind a price match guarantee if you have a competing quote. Pilot Engines also buys cores, so your old Duramax has value when it comes out.
Browse the Duramax engine models below, or call (877) 599-4806 to talk through your options with our team.
Find Your Duramax Model
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Customer Reviews
Why Pilot
Serial Match
Exact VIN/ESN
Every Engine
Guaranteed
~8 hours
Free, 48 States
Shipping
Avg Install
Price Match
Dyno Tested