2001-2004 GM 2500HD/3500HD 6.6L LB7 Duramax Engine & Performance

2001-2004 GM 2500HD/3500HD 6.6L LB7 Duramax Crate Engines

Crate Engines

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

Gaskets

2001-2004 GM 2500HD/3500HD 6.6L LB7 Duramax Glow Plugs

Glow Plugs

2001-2004 GM 2500HD/3500HD 6.6L LB7 Duramax Head Studs & Main Studs

Head Studs & Main Studs

2001-2004 GM 2500HD/3500HD 6.6L LB7 Duramax Heads & Valve Train

Heads & Valve Train

2001-2004 GM 2500HD/3500HD 6.6L LB7 Duramax Motor Mounts

Motor Mounts

2001-2004 GM 2500HD/3500HD 6.6L LB7 Duramax Oil Pans

Oil Pans

2001-2004 GM 2500HD/3500HD 6.6L LB7 Duramax Radiators & Cooling Upgrades

Radiators & Cooling Upgrades

2001-2004 GM 2500HD/3500HD 6.6L LB7 Duramax Rebuild Kits & Internal Parts

Rebuild Kits & Internal Parts

2001-2004 GM 2500HD/3500HD 6.6L LB7 Duramax Rods, Pistons, Cams, & More

Rods/Pistons/Cams & More

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Tuner DT8110010104000 Street Tune incl EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7
Tuner DT8110010104000 Street Tune incl EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

Duramax Tuner

Tuner DT8110010104000 Street Tune incl EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

SKU: DMTDT8110010104000
$808
Tuner DT8110010103000 Sport Tune incl EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7
Tuner DT8110010103000 Sport Tune incl EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

Duramax Tuner

Tuner DT8110010103000 Sport Tune incl EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

SKU: DMTDT8110010103000
$808
Tuner DT1110010107009 Optimized Stock Tune incl EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7
Tuner DT1110010107009 Optimized Stock Tune incl EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

Duramax Tuner

Tuner DT1110010107009 Optimized Stock Tune incl EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

SKU: DMTDT1110010107009
$808
Tuner DT1110010105009 Light Tow Tune incl EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7
Tuner DT1110010105009 Light Tow Tune incl EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

Duramax Tuner

Tuner DT1110010105009 Light Tow Tune incl EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

SKU: DMTDT1110010105009
$808
Tuner DT1110010106009 Heavy Tow Tune incl EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7
Tuner DT1110010106009 Heavy Tow Tune incl EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

Duramax Tuner

Tuner DT1110010106009 Heavy Tow Tune incl EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

SKU: DMTDT1110010106009
$808
Tuner DT1110010104009 Street Tune incl EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7
Tuner DT1110010104009 Street Tune incl EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

Duramax Tuner

Tuner DT1110010104009 Street Tune incl EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

SKU: DMTDT1110010104009
$808
Tuner DT1110010103009 Sport Tune incl EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7
Tuner DT1110010103009 Sport Tune incl EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

Duramax Tuner

Tuner DT1110010103009 Sport Tune incl EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

SKU: DMTDT1110010103009
$808
Tuner DT1110010001009 Switch on the Fly Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7
Tuner DT1110010001009 Switch on the Fly Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

Duramax Tuner

Tuner DT1110010001009 Switch on the Fly Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

SKU: DMTDT1110010001009
$550
Tuner DT8110010007000 Optimized Stock Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7
Tuner DT8110010007000 Optimized Stock Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

Duramax Tuner

Tuner DT8110010007000 Optimized Stock Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

SKU: DMTDT8110010007000
$300
Tuner DT8110010006000 Heavy Tow Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7
Tuner DT8110010006000 Heavy Tow Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

Duramax Tuner

Tuner DT8110010006000 Heavy Tow Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

SKU: DMTDT8110010006000
$300
Tuner DT8110010005000 Light Tow Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7
Tuner DT8110010005000 Light Tow Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

Duramax Tuner

Tuner DT8110010005000 Light Tow Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

SKU: DMTDT8110010005000
$300
Tuner DT8110010004000 Street Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7
Tuner DT8110010004000 Street Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

Duramax Tuner

Tuner DT8110010004000 Street Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

SKU: DMTDT8110010004000
$300
Tuner DT8110010003000 Sport Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7
Tuner DT8110010003000 Sport Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

Duramax Tuner

Tuner DT8110010003000 Sport Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

SKU: DMTDT8110010003000
$300
Tuner DT1110010007009 Optimized Stock Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7
Tuner DT1110010007009 Optimized Stock Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

Duramax Tuner

Tuner DT1110010007009 Optimized Stock Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

SKU: DMTDT1110010007009
$300
Tuner DT1110010006009 Heavy Tow Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7
Tuner DT1110010006009 Heavy Tow Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

Duramax Tuner

Tuner DT1110010006009 Heavy Tow Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

SKU: DMTDT1110010006009
$300
Tuner DT1110010004009 Street Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7
Tuner DT1110010004009 Street Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

Duramax Tuner

Tuner DT1110010004009 Street Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

SKU: DMTDT1110010004009
$300
Tuner DT1110010005009 Light Tow Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7
Tuner DT1110010005009 Light Tow Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

Duramax Tuner

Tuner DT1110010005009 Light Tow Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

SKU: DMTDT1110010005009
$300
Tuner DT1110010003009 Sport Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7
Tuner DT1110010003009 Sport Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

Duramax Tuner

Tuner DT1110010003009 Sport Tune Only for EFI Live Spade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

SKU: DMTDT1110010003009
$300
Wehrli 100158 Heavy Duty Engine Mounts | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Wehrli 100158 Heavy Duty Engine Mounts | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Wehrli 100158 Heavy Duty Engine Mounts | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Wehrli 100158 Heavy Duty Engine Mounts | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Wehrli 100158 Heavy Duty Engine Mounts | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Wehrli Custom Fab

Wehrli 100158 Heavy Duty Engine Mounts | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: WCF100158-GB
From $464.63
ARP 900-0950 4.095" Bore Ring Compressor | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
ARP 900-0950 4.095" Bore Ring Compressor | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

ARP

ARP 900-0950 4.095" Bore Ring Compressor | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: ARP900-0950
$97.13
ARP 900-1150 4.115" Bore Ring Compressor | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
ARP 900-1150 4.115" Bore Ring Compressor | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

ARP

ARP 900-1150 4.115" Bore Ring Compressor | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: ARP900-1150
$97.13
ARP 400-7534 Hex Head Valve Cover Bolt Kit | 2004.5-2016 GM 2500HD/3500HD 6.6L Duramax
ARP 400-7534 Hex Head Valve Cover Bolt Kit | 2004.5-2016 GM 2500HD/3500HD 6.6L Duramax

ARP

ARP 400-7534 Hex Head Valve Cover Bolt Kit | 2004.5-2016 GM 2500HD/3500HD 6.6L Duramax

SKU: ARP400-7534
$146.32
ARP 400-7532 Hex Head Valve Cover Bolt Kit | 2001-2004 GM 2500HD/3500HD 6.6L Duramax LB7
ARP 400-7532 Hex Head Valve Cover Bolt Kit | 2001-2004 GM 2500HD/3500HD 6.6L Duramax LB7

ARP

ARP 400-7532 Hex Head Valve Cover Bolt Kit | 2001-2004 GM 2500HD/3500HD 6.6L Duramax LB7

SKU: ARP400-7532
$108.39
Wagler C6643 Dual Valve Spring Kit with Steel Retainers | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Wagler C6643 Dual Valve Spring Kit with Steel Retainers | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Wagler Competition Products

Wagler C6643 Dual Valve Spring Kit with Steel Retainers | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: WCPC6643
$600

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DIESEL TRUCK EXPERTS STANDING 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 LB7 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
Tuners & Monitors
Cooling Upgrades
Head Studs & Main Studs
Rods, Pistons & Cams
Heads & Valve Train

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