2001-2004 GM 2500HD/3500HD 6.6L LB Duramax Engine & Performance
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Edge 85401-201 Evolution CTS3 50 State Legal Programmer | 2001-2016 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $689.95
ARP 400-7533 12pt Valve Cover Bolt Kit | 2004-2016 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $164.12
PPE 119020092 2in OEM Coolant Hose Drain 1/4in Bung | Universal
- Price
- $26.99
PPE 119022100 Blue Upper & Lower Coolant Hose Kit | 2001-2005 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $269.99
PPE 119020009 Stainless Steel Heater Hose Connector | 1999-2014 Silverado/Sierra 2500HD/3500HD
- Price
- $22.49
Wehrli 100025 Coolant Plug for Engine Cover | 2001-2016 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $23.28
PPE 114003000 Billet Aluminum Engine Oil Filler Cap | 2001-2016 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $31.49
Mahle MS-2218P Main Bearing Set | 2001-2016 Silverado/Sierra 2500HD/3500HD 6.6L
- Sale price
- $85.41
- Regular price
- $272
PPE 149000105 Firewall Heat Shield/Insulator | 2001-2007 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $269.99
Edge 98608 EAS Temperature Sensor | Universal
- Price
- $66.45
Sinister SD-BD582 Black Diamond Passenger Side Grade C Head Gasket | 2001-2010 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $120.99
Sinister SD-BD585 Black Diamond Driver Side Grade C Head Gasket | 2001-2010 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $120.99
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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
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