2001-2004 GM 2500HD/3500HD 6.6L LBZ Duramax Gaskets, Gasket Kits & Bearings

Upgrading the OEM turbo gaskets on your 2001-2004 GM 6.6L Duramax is a smart move for Sierra and Silverado owners looking to ensure dependable turbocharger performance. Our turbo gaskets provide a secure, leak-free seal, even under high boost and extreme heat, preventing exhaust leaks and preserving turbo efficiency. At Alligator Performance, we offer a variety of aftermarket turbo gaskets designed to help your truck endure high temperatures and pressures during demanding conditions. Further upgrade your GM 6.6L Duramax with our excellent selection of Oil Pans, Valve Covers & Accessories and Fuel Upgrades! GM Duramax Fitments: 2001, 2002, 2003, 2004 GM 6.6L Duramax. Submodel Fitments: WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali. Some exceptions apply, please see individual product pages for specific fitments.

GM Duramax>2004.5-2005 6.6L LLY
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Mahle 54582 Right Side Cylinder Head Gasket (Grade C 1.05mm) | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Mahle 54582 Right Side Cylinder Head Gasket (Grade C 1.05mm) | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Mahle

Mahle 54582 Right Side Cylinder Head Gasket (Grade C 1.05mm) | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Sale price
$86.34
Regular price
$184.19
Mahle 54585 Left Side Cylinder Head Gasket (Grade C 1.05mm) | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Mahle 54585 Left Side Cylinder Head Gasket (Grade C 1.05mm) | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Mahle

Mahle 54585 Left Side Cylinder Head Gasket (Grade C 1.05mm) | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Sale price
$99.23
Regular price
$190.89
Mahle CS54580 Lower Engine Gasket Kit | 2001-2007 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Mahle CS54580 Lower Engine Gasket Kit | 2001-2007 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Mahle

Mahle CS54580 Lower Engine Gasket Kit | 2001-2007 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Sale price
$132.67
Regular price
$299.37
Sinister SD-BD582 Black Diamond Passenger Side Grade C Head Gasket | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Sinister SD-BD582 Black Diamond Passenger Side Grade C Head Gasket | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Sinister Diesel

Sinister SD-BD582 Black Diamond Passenger Side Grade C Head Gasket | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Price
$120.99
Sinister SD-BD585 Black Diamond Driver Side Grade C Head Gasket | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Sinister SD-BD585 Black Diamond Driver Side Grade C Head Gasket | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Sinister Diesel

Sinister SD-BD585 Black Diamond Driver Side Grade C Head Gasket | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Price
$120.99
Mahle SH-1999S SH-1999S Cam Shaft Bearing Set | 2001-2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Mahle SH-1999S SH-1999S Cam Shaft Bearing Set | 2001-2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Mahle

Mahle SH-1999S SH-1999S Cam Shaft Bearing Set | 2001-2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Sale price
$80
Regular price
$245.57
Mahle 54580 Left Side Head Gasket | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Mahle 54580 Left Side Head Gasket | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Mahle

Mahle 54580 Left Side Head Gasket | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Sale price
$88.86
Regular price
$188.38
Merchant 97321295 Lower Valve Cover Gasket | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY
Merchant 97321295 Lower Valve Cover Gasket | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY

Merchant Automotive

Merchant 97321295 Lower Valve Cover Gasket | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY

Price
$76.72
Mahle 54580 Right Hand Side Head Gasket Grade A | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Mahle 54580 Right Hand Side Head Gasket Grade A | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Mahle

Mahle 54580 Right Hand Side Head Gasket Grade A | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Sale price
$88.86
Regular price
$185.02
Merchant 98045060 Grade C Left Side Head Gasket | 2001-2016 GM 2500HD/3500HD 6.6L Duramax
Merchant 98045060 Grade C Left Side Head Gasket | 2001-2016 GM 2500HD/3500HD 6.6L Duramax

Merchant Automotive

Merchant 98045060 Grade C Left Side Head Gasket | 2001-2016 GM 2500HD/3500HD 6.6L Duramax

Price
$99.72
Mahle 54597/54598 Victor Reinz 1.05mm Thick Left & Right Head Gasket | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Mahle 54597/54598 Victor Reinz 1.05mm Thick Left & Right Head Gasket | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Victor Reinz

Mahle 54597/54598 Victor Reinz 1.05mm Thick Left & Right Head Gasket | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Price
$220.64
Merchant 97188896 Lower Valve Cover Gasket | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7
Merchant 97188896 Lower Valve Cover Gasket | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

Merchant Automotive

Merchant 97188896 Lower Valve Cover Gasket | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

Price
$56.72

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2001-2004 6.6L Silverado & Sierra 2500HD/3500HD

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Welcome to The Garage – your one-stop shop for all your car care and maintenance needs. From premium oils and filters to top-notch car care products, we have everything you need to keep your vehicle running smoothly and looking its best. Whether you're a DIY enthusiast or a professional mechanic, our carefully curated selection of high-quality products will help you take care of your ride like never before.