2001-2004 GM 2500HD/3500HD 6.6L LB Duramax Engine & Performance
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ARP 230-5401 Main Stud Kit | 2001-2005 Silverado/Sierra 2500HD/3500HD 6.6L
- Sale price
- $241.65
- Regular price
- $460.91
Fleece FPE-INTAKEHORN Modified Intake Horn | 2001-2004 Silverado/Sierra 2500HD/3500HD 6.6L LB7
- Price
- $99.75
Merchant 10479 Exhaust Manifold to Cylinder Head Bolt Kit | 2001-2016 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $79.72
EFI Live FS3-GM-DC Flashscan V3 | And Dodge Tuning
- Price
- $1,425
PPE 114000555 MicroPure Extreme Performance Engine Oil Filter | 2001-2019 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $35.99
Mahle 54582 Right Side Cylinder Head Gasket (Grade C 1.05mm) | 2001-2016 Silverado/Sierra 2500HD/3500HD 6.6L
- Sale price
- $86.34
- Regular price
- $184.19
Mahle CS54580 Lower Engine Gasket Kit | 2001-2007 Silverado/Sierra 2500HD/3500HD 6.6L
- Sale price
- $132.67
- Regular price
- $299.37
EFI Live FS3-GM Flashscan V3 | 2001-2016 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $1,025
Mahle 54585 Left Side Cylinder Head Gasket (Grade C 1.05mm) | 2001-2016 Silverado/Sierra 2500HD/3500HD 6.6L
- Sale price
- $99.23
- Regular price
- $190.89
Merchant 19210615 Engine Oil Cooler Assembly | 2001-2010 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $799.73
Merchant 10549 Water Pump Kit with Cover | 2001-2005 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $249.33
PPE 114028000 Tubing Kit for PPE Crankcase Breather Kit | 2004-2010 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $35.99
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Shop This Make By
The 6.6L Duramax LB7 under the hood of your 2001-2004 GM Sierra/Silverado 2500/3500 may be one of the best and most efficient engines out there, but even the toughest trucks have some power and performance waiting to be unleashed through various performance modifications. Here at Alligator Performance, we carry a selection of cold air intakes, tuners, fuel upgrades, and turbo upgrades to help you get the most out of your diesel engine. Many of these upgrades like the cold air intakes and fuel upgrades even help promote component longevity so you can enjoy long-lasting and consistent performance without compromise. After you've added a few engine upgrades to your custom build, be sure to check out our premium 2001-2004 GM 6.6L Duramax LLY Transmission Upgrades to compliment the increase in power you're throwing down! 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>2001-2004 6.6L LB7
The Garage
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