2001-2004 GM 2500HD/3500HD 6.6L LB Duramax Engine & Performance
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Industrial 44B801 130lb Valve Spring Kit | 2001-2016 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $737.11
Mahle CB-1805P P-Series Rod Bearing | 2001-2016 Silverado/Sierra 2500HD/3500HD 6.6L
- Sale price
- $15.96
- Regular price
- $41.03
Fleece FPE-61-10002-D Cylinder Head (Driver Side) | 2004.5-2005 Silverado/Sierra 2500HD/3500HD 6.6L LLY
- Price
- $1,099
Fleece FPE-61-10002-P Cylinder Head (Passenger Side) | 2004.5-2005 Silverado/Sierra 2500HD/3500HD 6.6L LLY
- Price
- $1,099
Fleece FPE-BRAB-D1 32V Rocker Bridges | 2001-2016 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $512.54
Gator Fasteners HSK66-CS Competition 625 Series Head Stud Kit | 2001-2016 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $1,419.99
Wehrli 100442 Billet Oil Fill Tube Cap Clear Anodized | 2001-2024 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $49.47
Wehrli 100189 Billet Crankcase PCV Vent Fitting Kit | 2004.5-2010 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $44.62
SoCal Diesel 917371 Super Damper Diesel Harmonic Balancers | 2001-2005 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $464.31
ARP 900-0550 4.005 Bore Ring Compressor | 2001-2016 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $97.13
Wagler CRC6.6ST Street Fighter Connecting Rods | 2001-2016 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $1,950
Mahle CB-1805H Standard Rod Bearing Kit | 2001-2016 Silverado/Sierra 2500HD/3500HD 6.6L
- Sale price
- $34.30
- Regular price
- $73.99
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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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