This is a Duramax L5P engine for sale in fairly used condition: a complete 6.6 litre V8 turbo diesel out of a 2017 or later Chevrolet Silverado or GMC Sierra HD, inspected, compression-tested and ready to ship worldwide. It’s the strongest Duramax yet, with 910 lb-ft on earlier engines and 975 lb-ft on 2024 and later.
We confirm fitment and model year from your VIN and send photos of the actual engine before you pay.
What’s Included With This Duramax L5P Engine for Sale
- Cast iron block with crank, rods and pistons
- Both aluminium cylinder heads with valvetrain
- Injectors and fuel rails (condition noted on your quote)
- Denso HP4 high-pressure fuel pump
- Variable geometry turbocharger and electronic actuator
- Intake, EGR valve and cooler
- Valve covers, oil pan and front cover
- Compression results, photos and crating on a pallet
The DPF, SCR system, computer, harness and transmission aren’t included unless we agree it in writing.
Duramax L5P Specifications
| Engine | GM 6.6L Duramax L5P |
| Layout | 90-degree V8, turbocharged, 4 valves per cylinder |
| Displacement | 6.6 L (402 cu in) |
| Bore x stroke | 103 mm x 99 mm |
| Compression | 16.0:1 |
| Fuel system | Denso common rail with HP4 pump |
| Output (2017 to 2023) | 445 hp, 910 lb-ft |
| Output (2024 on) | 470 hp, 975 lb-ft |
| Emissions | Cooled EGR, DPF, SCR with DEF |
| Oil capacity | About 10 quarts with filter |
| Transmissions | Allison 1000 6-speed (2017 to 2019), Allison 10-speed (2020 on) |
More on the engine family is in the Duramax V8 article on Wikipedia.
Vehicles This Duramax L5P Engine for Sale Fits
- 2017 and later Chevrolet Silverado 2500HD and 3500HD
- 2017 and later GMC Sierra 2500HD and 3500HD
The 2024 update changed the turbo, fuel parts and calibration, and 2020 brought a new body and the ten-speed Allison, so we match the engine to your model year. GM’s medium-duty trucks use a related engine with a different code and tune, so send us the VIN if that’s what you run.
Condition and Testing
Every Duramax L5P engine for sale on this page is fairly used and tested. Before listing, we:
- Run compression or leak-down on all eight cylinders
- Check blow-by
- Inspect the oil for fuel, coolant or metal
- Check turbo shaft play and the actuator
- Look at the intake for dust
- Check the EGR cooler for coolant leaks
- Turn the crank by hand to feel for binding
You get the results and photos of the exact engine with your quote.
Engine Problem or Emissions Problem?
Many L5P warning lights and reduced-power events come from NOx sensors, DEF heaters, a clogged DPF or EGR faults, not engine damage. Get a proper diagnosis first. If compression is good and there’s no knock, metal or coolant loss, you may not need a Duramax L5P engine for sale at all, and we’d rather tell you that than sell you an engine you don’t need. Rules on emissions equipment vary by country, and removing it from a road vehicle is illegal in many places.
Do You Need a Replacement Engine?
It’s time for a Duramax L5P engine for sale when you have a knock, a spun bearing, heavy blow-by, low compression, a cylinder damaged by a failed injector, metal in the oil or coolant loss with no outside leak. On a newer truck, a tested used engine costs a fraction of a dealer engine or a new truck. Our replacement engine cost guide helps you compare.
Why the L5P Is Worth Keeping
The L5P dropped the LML’s troublesome CP4 pump for the Denso HP4, which has a much better record. Its new block and heads handle huge torque, and it tows like nothing GM built before it. A late-model HD truck with a good body, frame and transmission is still worth a lot of money, so a Duramax L5P engine for sale plus installation is usually far cheaper than replacing the whole truck.
Why Buy This Duramax L5P Engine for Sale
- Tested with real numbers for every cylinder
- Model year and fitment confirmed by VIN before you pay
- Photos of the actual engine
- Far cheaper than a new engine from the dealer
- Written warranty
- Worldwide shipping with tracking
Install Advice
- Fit a new air filter and check the intake ducting for leaks
- Clean the intercooler and pipes after any turbo failure
- Change the fuel filter and prime the fuel system
- Flush the tank and lines if the old engine had contaminated fuel
- Refill and bleed the cooling system with the correct coolant
- Prime the oil system before first start
- Have the truck scanned after install so any relearns are done
A careful install, clean fuel and fresh DEF are what keep a Duramax L5P engine for sale running for hundreds of thousands of miles.
Who Buys This Engine
Owners of newer trucks out of warranty, contractors and fleets who can’t afford downtime, hot-shot drivers, repair shops, and exporters rebuilding late-model trucks. Fleets often keep a spare Duramax L5P engine for sale ready so one failure doesn’t take a truck off the road for weeks.
Towing, Heat and Fuel
The L5P was built to tow, and long hauls also help the emissions system stay clean. Clean the cooling stack every season, use the correct coolant, keep DEF fresh, and change fuel filters on time. Water and dirt are what damage high-pressure fuel systems. Look after these basics and your Duramax L5P engine for sale will tow hard for years.
Shipping Worldwide
We ship to buyers across the Americas, the Caribbean, Europe, Africa, the Middle East, Asia and Oceania. The engine is drained, sealed, bolted to a pallet and wrapped. Freight is quoted by weight and destination, and we handle export paperwork. See our shipping policy.
Payment and Ordering
We accept bank transfer only.
- Add this Duramax L5P engine for sale to your cart, or send us your VIN.
- We confirm the fit and send photos, test results and a written quote with freight.
- You pay by bank transfer.
- We crate and ship the engine and send tracking.
Read our refund and returns policy before ordering.
More Reading
Our Duramax L5P buyer’s guide covers model-year differences, the emissions system and buying checks in detail. For 2011 to 2016 trucks see the Duramax LML engine. Browse all Chevy engines or the full shop.
Questions
Is this engine new?
No. It’s fairly used and tested.
Does the L5P use the CP4 pump?
No. It uses the Denso HP4, which has a much better record.
Is shipping included?
No. We quote freight with the engine.
How do I order?
Add this Duramax L5P engine for sale to your cart, or send your VIN through our contact page. You can also call +1 (209) 733-0882 or WhatsApp +1 209 690 5983. We confirm the fit before you pay.
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