04.5-06 Duramax LLY

The Duramax LLY was introduced in 2004 to replace the popular LB7. Like the LB7, the LLY utilizes a high pressure common rail direct injection system. The LLY was General Motors' first attemp at implementing emission controls on a diesel engine to meet stricter emissions requirements in the future. The LLY adopted a variable geometry turbocharger (VGT) and exhaust gas recirculation (EGR) system to help reduce emissions. Huge changes to the LLY debuted in 2006, but the engines were mechanically identical.

Years Produced 2004.5 - 2006
Displacement 403 cubic inches, 6.6 liters
Configuration 90 degree V8
Compression Ratio 17.5:1 (16.8:1 in 2006)
Bore 4.06 inches
Stroke 3.90 inches
Aspiration • Garrett variable geometry turbocharger (VGT)
• air to air intercooler
Valvetrain OHV, 4 valves per cylinder
Injection • Direct injection
• Bosch high pressure common rail, CP3 injection pump
• 23,000 psi max injection pressure
Horsepower • 310 hp @ 3,000 RPM
• 310 hp @ 3,000 RPM (2006)
Torque • 520 lb-ft @ 1,600 RPM
• 605 lb-ft @ 1,600 RPM (2006)
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Mishimoto Chevrolet/GMC 6.6L Duramax Aluminum Radiator 2001-2005

Mishimoto has released a performance aluminum radiator for the 2001–2005 Chevrolet/GMC 6.6L Durama..

$850.00

Mishimoto Chevrolet/GMC 6.6L Duramax Aluminum Radiator 2006-2010

Mishimoto has released a direct-fit performance aluminum radiator for the 2006–2010 Chevrolet/GMC ..

$850.00

Mishimoto Chevrolet/GMC 6.6L Duramax Hot-Side Intercooler Pipe and Boot Kit 2004.5-2010

Mishimoto is proud to expand their line of Duramax performance parts to include a 6.6L Duramax Int..

$275.00

Mishimoto Chevrolet/GMC 6.6L Duramax Intercooler 2001-2005

Mishimoto has expanded their Duramax performance parts line to include a performance intercooler f..

$1,055.00

Mishimoto Chevrolet/GMC 6.6L Duramax Intercooler 2006-2010

Mishimoto is expanding thier line of Duramax performance parts to include a performance intercoole..

$1,085.00

Mishimoto Chevrolet/GMC 6.6L Duramax Silicone Coolant Kit 2001-2005

Mishimoto's Duramax coolant hose kits are constructed from a combination of high-grade silicone an..

$300.00

PPE Dual Fueler for GM LLY (04.5-06)

By simply bolting this kit on, your engine computer will automatically recognize both pumps and con..

$2,350.00

PPE Dual Fueler for GM LLY (04.5-06)- NO CP3 PUMP

By simply bolting this kit on, your engine computer will automatically recognize both pumps and con..

$1,450.00

PPE High Flow Exhaust Manifolds and Up-Pipes for GM LB7/LLY (04-05)- Federal

PPE’s High-Flow Exhaust Manifolds and Up-Pipes increase exhaust flow by 20 percent are 50 state emi..

$1,245.99

PPE High Flow Exhaust Manifolds and Up-Pipes for GM LLY/LBZ (06-07)- Federal

PPE’s High-Flow Exhaust Manifolds and Up-Pipes increase exhaust flow by 20 percent are 50 state emi..

$1,245.99

PPE High Performance Fuel Rail

Why go to the trouble of modifying your stock fuel rail when you can simply have us do it for you?..

$599.99

PPE Ported Fuel Rail Fitting

PPE’s Ported Fuel Rail Fitting replaces the restrictive stock fitting and helps maintain fuel rail ..

$34.99

PPE Race Fuel Valve

The PPE Race Fuel Valve (heat treated stainless steel construction) replaces stock or a shimmed ..

$34.99

PPE Viton O-Ring

The perfect companion to the PPE Race Fuel Valve is this Viton O-Ring. It is made from high qualit..

$2.99

PTP Turbo Blanket 2004.5-2010 Chevy/GMC 6.6L

Lava Turbo Blanket Materials: With an outer layer made from actual pulverized volcanic lava rock ..

$164.95

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