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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Industrial PDM-298STD Fly Cut Chamfered & De-Lipped Piston Kit STD | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Industrial PDM-298STD Fly Cut Chamfered & De-Lipped Piston Kit STD | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Industrial Injection

Industrial PDM-298STD Fly Cut Chamfered & De-Lipped Piston Kit STD | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: IISPDM-298STD
$3,845.03
Industrial PDM-298.040 Fly Cut Piston Kit .040 | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Industrial PDM-298.040 Fly Cut Piston Kit .040 | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Industrial Injection

Industrial PDM-298.040 Fly Cut Piston Kit .040 | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: IISPDM-298.040
$2,626.16
Cometic PRO3008T Top End Gasket Kit - 4.100 inch Bore .040 inch | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7
Cometic PRO3008T Top End Gasket Kit - 4.100 inch Bore .040 inch | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

Cometic

Cometic PRO3008T Top End Gasket Kit - 4.100 inch Bore .040 inch | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

SKU: COMPRO3008T
$501.35
$539.09
SAVE $37.74
Cometic C15376-062 LHS MLX Cylinder Head Gasket - .062 inch Bore 4.130 inch | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Cometic C15376-062 LHS MLX Cylinder Head Gasket - .062 inch Bore 4.130 inch | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Cometic

Cometic C15376-062 LHS MLX Cylinder Head Gasket - .062 inch Bore 4.130 inch | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: COMC15376-062
$195.29
$216.98
SAVE $21.69
Victor Reinz 14-10117-01 Engine Cylinder Head Bolt Set | 2001-2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Victor Reinz 14-10117-01 Engine Cylinder Head Bolt Set | 2001-2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Victor Reinz

Victor Reinz 14-10117-01 Engine Cylinder Head Bolt Set | 2001-2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: VRZ14-10117-01
$71.94
Victor Reinz 71-13629-00 Exhaust Pipe Flange Gasket | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Victor Reinz 71-13629-00 Exhaust Pipe Flange Gasket | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Victor Reinz

Victor Reinz 71-13629-00 Exhaust Pipe Flange Gasket | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: VRZ71-13629-00
$5.01
Victor Reinz 02-10483-01 Engine Cylidner Head Gasket Set | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7
Victor Reinz 02-10483-01 Engine Cylidner Head Gasket Set | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

Victor Reinz

Victor Reinz 02-10483-01 Engine Cylidner Head Gasket Set | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

SKU: VRZ02-10483-01
$235.61
Victor Reinz 61-36465-20 Engine Cylinder Head Gasket | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Victor Reinz 61-36465-20 Engine Cylinder Head Gasket | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Victor Reinz

Victor Reinz 61-36465-20 Engine Cylinder Head Gasket | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: VRZ61-36465-20
$83.60
ARP 400-7531 12pt Valve Cover Bolt Kit | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7
ARP 400-7531 12pt Valve Cover Bolt Kit | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

ARP

ARP 400-7531 12pt Valve Cover Bolt Kit | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

SKU: ARP400-7531
$121.95
$232.61
SAVE $110.66
ARP 100-7531 12pt Valve Cover Bolt Kit | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7
ARP 100-7531 12pt Valve Cover Bolt Kit | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

ARP

ARP 100-7531 12pt Valve Cover Bolt Kit | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

SKU: ARP100-7531
$83.41
$159.10
SAVE $75.69
PPE 119030100 Raw 304 Stainless Steel Coolant Tube (Pump to oil cooler) | 2001-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 119030100 Raw 304 Stainless Steel Coolant Tube (Pump to oil cooler) | 2001-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 119030100 Raw 304 Stainless Steel Coolant Tube (Pump to oil cooler) | 2001-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 119030100 Raw 304 Stainless Steel Coolant Tube (Pump to oil cooler) | 2001-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 119030100 Raw 304 Stainless Steel Coolant Tube (Pump to oil cooler) | 2001-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 119030100 Raw 304 Stainless Steel Coolant Tube (Pump to oil cooler) | 2001-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 119030100 Raw 304 Stainless Steel Coolant Tube (Pump to oil cooler) | 2001-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE119030100
$197.99
$219.99
SAVE $22
PPE 118026110 Stage 1 Performance Camshaft - Alt Fire | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
IN STOCK
PPE 118026110 Stage 1 Performance Camshaft - Alt Fire | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 118026110 Stage 1 Performance Camshaft - Alt Fire | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 118026110 Stage 1 Performance Camshaft - Alt Fire | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 118026110 Stage 1 Performance Camshaft - Alt Fire | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE118026110
$629.99
PPE 118021423 Valve Cover Kit with out Pillars - Gold | 2004-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
IN STOCK
PPE 118021423 Valve Cover Kit with out Pillars - Gold | 2004-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 118021423 Valve Cover Kit with out Pillars - Gold | 2004-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE118021423
$287.99
PPE 118021400 Valve Cover Kit - No Pillars | 2004-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
IN STOCK
PPE 118021400 Valve Cover Kit - No Pillars | 2004-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 118021400 Valve Cover Kit - No Pillars | 2004-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 118021400 Valve Cover Kit - No Pillars | 2004-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE118021400
$269.99
PPE 114000551 Oil Filter Adapter Threaded 13/16 inch - 16 UNF | 2001-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 114000551 Oil Filter Adapter Threaded 13/16 inch - 16 UNF | 2001-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 114000551 Oil Filter Adapter Threaded 13/16 inch - 16 UNF | 2001-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE114000551
$8.99
PPE 110090080 Valve & Spring Kit | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
IN STOCK
PPE 110090080 Valve & Spring Kit | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 110090080 Valve & Spring Kit | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 110090080 Valve & Spring Kit | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE110090080
$809.99
Gator Fasteners RBK66 Heavy Duty Rod Bolt Kit | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Gator Fasteners RBK66 Heavy Duty Rod Bolt Kit | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Gator Fasteners RBK66 Heavy Duty Rod Bolt Kit | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Gator Fasteners RBK66 Heavy Duty Rod Bolt Kit | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Gator Fasteners RBK66 Heavy Duty Rod Bolt Kit | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Gator Fasteners

Gator Fasteners RBK66 Heavy Duty Rod Bolt Kit | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: GTFRBK66
$209.99
$263
SAVE $53.01
Fleece FPE-HAR-DMAX-OP-0310 Oil Pressure Sensor Pigtail | 2003-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
IN STOCK
Fleece FPE-HAR-DMAX-OP-0310 Oil Pressure Sensor Pigtail | 2003-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Fleece FPE-HAR-DMAX-OP-0310 Oil Pressure Sensor Pigtail | 2003-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Fleece FPE-HAR-DMAX-OP-0310 Oil Pressure Sensor Pigtail | 2003-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Fleece Performance Products

Fleece FPE-HAR-DMAX-OP-0310 Oil Pressure Sensor Pigtail | 2003-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: FLCFPE-HAR-DMAX-OP-0310
$21.99
Edge 98609 EAS Power Switch w/Starter Kit | Universal
IN STOCK
Edge 98609 EAS Power Switch w/Starter Kit | Universal

Edge Products

Edge 98609 EAS Power Switch w/Starter Kit | Universal

SKU: EDG98609
$223.95
$251.95
SAVE $28
BD Diesel 1081160 Turbo Cool Down Timer Kit v2.0 | 1994-1995 Dodge RAM 2500/3500 & 94-18 Ford Powerstroke & 01-14 GM 6.6L Duramax
IN STOCK
BD Diesel 1081160 Turbo Cool Down Timer Kit v2.0 | 1994-1995 Dodge RAM 2500/3500 & 94-18 Ford Powerstroke & 01-14 GM 6.6L Duramax

BD Diesel

BD Diesel 1081160 Turbo Cool Down Timer Kit v2.0 | 1994-1995 Dodge RAM 2500/3500 & 94-18 Ford Powerstroke & 01-14 GM 6.6L Duramax

SKU: BDD1081160
$254.95
$269
SAVE $14.05
ARP 900-0400 4.040 Tapered Ring Compressor | 1989-2007 Dodge RAM 2500/3500 5.9L Cummins
ARP 900-0400 4.040 Tapered Ring Compressor | 1989-2007 Dodge RAM 2500/3500 5.9L Cummins
ARP 900-0400 4.040 Tapered Ring Compressor | 1989-2007 Dodge RAM 2500/3500 5.9L Cummins

ARP

ARP 900-0400 4.040 Tapered Ring Compressor | 1989-2007 Dodge RAM 2500/3500 5.9L Cummins

SKU: ARP900-0400
$97.13
aFe 77-44002 Power Scorcher HD Tuning Module | 1999-2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
IN STOCK
aFe 77-44002 Power Scorcher HD Tuning Module | 1999-2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
aFe 77-44002 Power Scorcher HD Tuning Module | 1999-2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
aFe 77-44002 Power Scorcher HD Tuning Module | 1999-2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
aFe 77-44002 Power Scorcher HD Tuning Module | 1999-2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

AFE Power

aFe 77-44002 Power Scorcher HD Tuning Module | 1999-2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: AFE77-44002
$473.75
PPE 119023100 Green Upper & Lower Coolant Hose Kit | 2001-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
IN STOCK
PPE 119023100 Green Upper & Lower Coolant Hose Kit | 2001-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 119023100 Green Upper & Lower Coolant Hose Kit | 2001-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE119023100
$269.99
PPE 118034000 Main Stud Kit | 2001-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
IN STOCK
PPE 118034000 Main Stud Kit | 2001-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 118034000 Main Stud Kit | 2001-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 118034000 Main Stud Kit | 2001-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 118034000 Main Stud Kit | 2001-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE118034000
$229.49

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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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