6.6 Duramax Engine Price range: $3,000.00 through $13,000.00Select options
6.6 Duramax Engine
TheΒ 6.6L Duramax V8 turbo-dieselΒ is a powerful and durable engine known for its high torque, strong towing capability, and long-standing presence in heavy-duty applications. The current versionΒ producesΒ 470 horsepower andΒ 975 lb-ftΒ of torque, combining robust constructionΒ with modern dieselΒ technology. Designed to operateΒ onΒ ultra-low-sulfurΒ diesel or B20Β biodiesel, the 6.6L DuramaxΒ combines a strongΒ underlying architectureΒ with modern turbochargingΒ and fuel-systemΒ technology, making itΒ a capable choiceΒ for heavy-dutyΒ trucks and otherΒ demanding applications.
In Stock
$3,000.00 – $13,000.00Price range: $3,000.00 through $13,000.00
The prices are exclusive of taxes and shipping. The price may vary depending upon the miles and year of manufacturing.
SKU: GM-66DMX
Category: Used Engine
Tags: 6.6 Duramax Diesel Engine, 6.6 Duramax Engine, 6.6L Duramax Engine, 6.6L V8 Diesel Engine, Chevrolet 6.6 Duramax Engine, Chevy 6.6 Duramax Engine, Duramax Diesel Engine, Duramax V8 Engine, GM 6.6 Duramax Engine, GMC 6.6 Duramax Engine, OEM 6.6 Duramax Engine, Used 6.6 Duramax Engine
Brand: General Motors
Additional Information
| Brand | General Motors |
|---|---|
| Conditions | Remanufactured, Used |
| Miles | 70000-130000 |
| Year Compatibility | 2001-2025 |
| Verified | Tried & Tested |
| Warranty | Up to 3 Months |
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Specifications
TheΒ 6.6 Duramax Engine is a V8Β turbo-dieselΒ heavy-duty engineΒ that has evolvedΒ through multiple generationsΒ since its introductionΒ in 2001, withΒ continuous improvementsΒ in power, efficiency, emissionsΒ performance, and durability. The latest versionΒ deliversΒ 470 horsepower atΒ 2,800 RPM andΒ 975 lb-ftΒ of torque atΒ 1,600 RPM, providing the substantialΒ low-end pullingΒ power required forΒ demanding towing andΒ hauling applications. TheΒ engine uses aΒ 6.6-liter (402-cubic-inch) V8Β configuration,Β with aΒ cast-iron block, aluminium cylinder heads, and a 4.055-inch bore Γ 3.897-inch stroke. It has aΒ 1-2-7-8-4-5-6-3 firingΒ orderΒ and weighs approximatelyΒ 835 lb (379Β kg) dry.Β
Engine Variants
LB7 (2001β2004)
The LB7 was the first-generation 6.6L Duramax V8 turbo-diesel, introduced in 2001. It features a 6.6-liter (402 cu. in.) V8 configuration, cast-iron block, aluminum cylinder heads, and Bosch high-pressure common-rail fuel injection. With a 4.055-inch bore and 3.897-inch stroke, the LB7 established the Duramax platform with strong torque, reliable performance, and improved fuel-injection technology for heavy-duty applications.
LML (2011β2016)
The LML generation introduced significant updates to improve power, fuel efficiency, and emissions performance. It uses the 6.6-liter V8 architecture with a cast-iron block, aluminum cylinder heads, and Bosch common-rail fuel injection with a CP4.2 high-pressure fuel pump. The LML also incorporated selective catalytic reduction (SCR) with diesel exhaust fluid (DEF), along with advanced emissions-control systems, making it a more refined and cleaner-performing Duramax engine.
5P (2017βPresent)
The L5P is the modern-generation 6.6L Duramax V8 turbo-diesel, engineered for increased durability, towing capability, and performance. It features a 6.6-liter (402 cu. in.) displacement, 4.055-inch bore, 3.897-inch stroke, cast-iron block, aluminum cylinder heads, and advanced common-rail fuel injection. The latest version produces up to 470 horsepower at 2,800 rpm and 975 lb-f. of torque at 1,600 rpm, providing substantial low-end pulling power for heavy-duty towing and hauling applications.
Frequently Asked Questions
Which is better, the 6.6 Duramax engine or the 6.7L Cummins?
Both engines are very good. The 6.7L Cummins is better suited for heavy-duty work and long-term use, while the 6.6L Duramax is smoother and more comfortable for everyday driving.
What year of the 6.6 Duramax engine should you avoid?
The 2001β2004 LB7, 2004.5β2005 LLY, and early 2011β2012 LML models should be checked carefully because they can have some common reliability problems.
Which original components may need to be transferred to a replacement 6.6 Duramax Engine?
Depending on the application, components such as the alternator, starter, turbocharger, intake and exhaust parts, sensors, wiring harnesses, fuel-system components, brackets, and other accessories may need to be transferred from the original engine. Compatibility should be confirmed before installation.
What vehicles use the 6.6 Duramax engine?
The 6.6 Duramax engine is mainly used in heavy-duty Chevrolet Silverado HD and GMC Sierra HD trucks, along with some commercial vehicles.
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