The GM Powered Solutions 2.8L I-4 LWN Duramax Turbo Diesel Engine

2.8L I-4 LWN DURAMAX® TURBO-DIESEL

SMALL FOOTPRINT.
BIG IMPRESSION.

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HORSEPOWER: 204 HP (152 kW) @ 3200 RPM* 
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TORQUE: 376 LB-FT (510 Nm) @ 1600-2400 RPM*
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CYLINDERS: 4
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ULTRA-LOW SULFUR DIESEL AND B20 BIODIESEL
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2.8L I-4 LWN Features & Specifications
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Compared to 2024 and earlier 2.8L variants, our latest Duramax 2.8L LWN turbo diesel engine offers increased horsepower with a broader torque band for impressive power and no-compromise durability. A broad torque band helps make the 2.8L Duramax very powerful at low rpm, while the all-new turbocharger’s performance provides a confident feeling of immediate and smooth horsepower on demand.  Latest Refinements vs. 2024 and Earlier Models:  

 

  • Horsepower increase from 181 hp to 204 hp. 
 
  • Torque increase from 369 lb.-ft. to 376 lb.-ft with broader plateau. 
 
  • Redesigned water-cooled, variable geometry turbocharger with electric actuator. 
 
  • Aluminum pistons with new bowl design for combustion and heat resistance. 
 
  • Increased fuel pressure (2000 to 2200 bar). 
 
  • Redesigned fuel injector nozzles. 
 
  • New E71 electronic control module. Can also use GM Powered Solutions DMEFI-1 controller. 
 
  • Available electronic radiator cooling fan. 
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Combustion System: 

Compression Ignition 

Induction System: 

Variable-Geometry Turbocharger 

Displacement: 

2776 cc 

Engine Orientation: 

Longitudinal 

Compression Ratio: 

15:5:1

Valve Configuration: 

Dual Overhead Camshafts 

Valves per Cylinder: 

4 

Valve Timing: 

Fixed 

Assembly Site: 

São José dos Campos, Brazil

Firing Order: 

1–3–4–2 

Bore x Stroke: 

94.00 x 100.00 mm 

Fuel System: 

Direction Injection Common Rail 

Fuel Type: 

Ultra-Low Sulfur Diesel and B20 Biodiesel 

Engine Mass: 

236 kg (520 lb.)  

Horsepower: 

204 hp (152 kW) @ 3200 rpm*

Torque: 

376 lb.-ft (510 Nm) @ 1600-2400rpm* 

Maximum Engine Speed: 

5000 rpm

Engine Controls: 

E71 ECM or GM Powered Solutions DMEFI-1 

Emissions Controls: 

Close Coupled Diesel Oxidation Catalyst, Selective Catalytic Reduction with Urea Injection, Diesel Particulate Filter, Cooled Exhaust Gas Recirculation Valve, Positive Crankcase Ventilation

Emissions Standard: 

Euro 5 / Proconve L7 (PL7)

Euro 6c / Proconve L8 (PL8) 

Block: 

Grey Cast Iron  

Cylinder Head: 

Aluminum 

Intake Manifold: 

Composite 

Exhaust Manifold: 

Cast Nodular Iron

Crankshaft: 

Forged Steel  

Camshaft: 

Powdered Metal/Sintered Lobes

Connecting Rod: 

Forged Steel  

*As tested in Chevrolet S10, South America