GM LM2 3.0L Duramax Turbo Diesel Crate Engine 40009412
GM LM2 3.0L Duramax Turbo Diesel Crate Engine 40009412 is backordered and will ship as soon as it is back in stock.
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Product Care information
Product Care information
At BackWoods Diesel, we ensure all parts are stored in a clean, dry, and temperature-controlled environment to prevent damage. Our team inspects each part for quality and maintains them according to manufacturer guidelines before shipping.
Delivery and Shipping
Delivery and Shipping
At BackWoods Diesel, we prioritize fast and reliable shipping. All orders are carefully packed and dispatched promptly to ensure your parts arrive safely and on time, so you can keep your projects running smoothly without delay.
GM LM2 3.0L Duramax Turbo Diesel Crate Engine 40009412
Description
Description
The GM LM2 3.0L Duramax Turbo-Diesel Crate Engine is a factory-built replacement designed for 2020-2022 Chevrolet Silverado 1500, GMC Sierra 1500, and select GM full-size SUVs. Built with lightweight aluminum construction and advanced diesel technology, the LM2 delivers the perfect blend of power, efficiency, and durability.
With 277 horsepower and 460 lb-ft of torque, this inline-six diesel is engineered to tow with confidence while providing 30+ MPG highway fuel economy. The LM2 is lighter than many gasoline engines producing similar power, making it an excellent choice for powertrain replacements or upgrades.
Key Features:
✅ Engine Type: 3.0L DOHC Turbo-Diesel I6 (LM2)
✅ Horsepower: 277 hp @ 3750 RPM (SAE Certified)
✅ Torque: 460 lb-ft @ 1500 RPM (SAE Certified)
✅ Fuel Efficiency: Reported 30+ MPG Highway
✅ Lightweight Aluminum Block and Cylinder Head
✅ Turbocharger: Single Variable-Geometry Turbo with Intercooling
✅ Fuel System: High-Pressure Common Rail (36,250 psi / 2500 bar)
✅ Compression Ratio: 15.0:1
✅ Emissions: Low-Pressure EGR & Selective Catalyst Reduction on Filter (SCRF)
✅ Max Engine Speed: 5100 RPM
✅ Firing Order: 1-5-3-6-2-4
Specifications:
Bore & Stroke: 3.30" x 3.54" (84mm x 90mm)
Valvetrain: Dual Overhead Camshaft (DOHC), 4 valves per cylinder
Air Delivery: Max Boost – 42.8 psi (2.95 bar)
Additional Features:
Continuously variable oil pump
Engine oil cooler
Automatic Stop/Start
Active Thermal Management System
Fitment:
✔️ 2020-2022 Chevrolet Silverado 1500 (LM2 Duramax models)
✔️ 2020-2022 GMC Sierra 1500 (LM2 Duramax models)
✔️ Compatible GM full-size SUVs equipped with the 3.0L Duramax LM2
Replaces: 12729055 & 55508579
What’s Included:
Complete Long Block Assembly
**Excludes exhaust manifolds and engine electrical components**
Why Buy This Engine?
✔️ Genuine GM OEM Quality & Reliability
✔️ Factory Performance – No Compromises
✔️ Lightweight Diesel Power with Outstanding Fuel Economy
✔️ Perfect for Direct Replacement or Engine Swap Projects
Important Notes:
-Professional installation and programming are required.
- Verify fitment for your specific model before purchase.
Get back on the road with power and efficiency — order your LM2 Duramax crate engine today!
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