2.8L LWN

The Duramax 2.8L is the cleanest diesel truck engine ever produced by General Motors, and it meets some of the toughest U.S. emissions standards, thanks in part to a cooled Exhaust Gas Recirculation (EGR) system.

The engine is part of GM’s global family of turbo-diesel four-cylinder engines and features a variable-geometry turbocharger for optimal power and efficiency across the rpm band and a balance shaft for smoothness.

A broad torque band makes the 2.8L Duramax very powerful at low rpm, while the turbocharged performance provides a confident feeling of immediate and smooth horsepower on demand.

Cast-Iron Engine Block

• Oil jet-spray piston-cooling feature enhances durability, ensuring piston robustness at critical operating conditions.
• Forged-steel crankshaft anchors rotating assembly, reducing noise and vibration, which in turn leads to enhanced durability.

Aluminum Pistons

• Lightweight aluminum pistons result in less mass inside the engine leading to more efficiency, decreased vibration, and bolstering performance at high rpm.

Cylinder Head

• Aluminum cylinder head cast with advanced semipermanent mold technology providing excellent strength and reduced machining with optimal port flow.
• Heat-treated casting reduces residual stress, enhancing engine durability.
• Four-valve architecture ensures optimized breathing of the engine and clean combustion process.
• Includes premium valve seat, valve guide, and valve materials, ensuring good durability without required adjustments found on other engines.

Rotating Assembly

• Features friction-reducing polymer coating on skirts to help reduce friction.
• Less piston weight results in less reciprocating mass in the engine – resulting in less inertia for greater operating efficiency.