2007.5-2010 GM 2500HD/3500HD 6.6L LMM Duramax Engine & Performance

2007.5-2010 GM 2500HD/3500HD 6.6L LMM Duramax Crate Engines

Crate Engines

2007.5-2010 GM 2500HD/3500HD 6.6L LMM Duramax Gaskets, Gasket Kits & Bearings

Gaskets

2007.5-2010 GM 2500HD/3500HD 6.6L LMM Duramax Glow Plugs

Glow Plugs

2007.5-2010 GM 2500HD/3500HD 6.6L LMM Duramax Head Studs & Main Studs

Head Studs & Main Studs

2007.5-2010 GM 2500HD/3500HD 6.6L LMM Duramax Heads & Valve Train

Heads & Valve Train

2007.5-2010 GM 2500HD/3500HD 6.6L LMM Duramax Motor Mounts

Motor Mounts

2007.5-2010 GM 2500HD/3500HD 6.6L LMM Duramax Oil Pans

Oil Pans

2007.5-2010 GM 2500HD/3500HD 6.6L LMM Duramax Radiators & Cooling Upgrades

Radiators & Cooling Upgrades

2007.5-2010 GM 2500HD/3500HD 6.6L LMM Duramax Rebuild Kits & Internal Parts

Rebuild Kits & Internal Parts

2007.5-2010 GM 2500HD/3500HD 6.6L LMM Duramax Rods, Pistons, Cams & More

Rods/Pistons/Cams & More

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Merchant 10010 Air Bleeder Screw | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
IN STOCK
Merchant 10010 Air Bleeder Screw | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Merchant Automotive

Merchant 10010 Air Bleeder Screw | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: MAT10010
$10.92
EFI Live LIC-FS2-VIN Tuning FlashScan V2 VIN License | Universal
EFI Live LIC-FS2-VIN Tuning FlashScan V2 VIN License | Universal
EFI Live LIC-FS2-VIN Tuning FlashScan V2 VIN License | Universal

EFI Live

EFI Live LIC-FS2-VIN Tuning FlashScan V2 VIN License | Universal

SKU: EFILIC-FS2-VIN
$125
$129.99
Fleece FPE-DMAX-OC-RED Oil Cap Red | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
IN STOCK
Fleece FPE-DMAX-OC-RED Oil Cap Red | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Fleece FPE-DMAX-OC-RED Oil Cap Red | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Fleece Performance Products

Fleece FPE-DMAX-OC-RED Oil Cap Red | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: FLCFPE-DMAX-OC-RED
$39.99
Fleece FPE-DMAX-OC-BLU Oil Cap Blue | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
IN STOCK
Fleece FPE-DMAX-OC-BLU Oil Cap Blue | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Fleece FPE-DMAX-OC-BLU Oil Cap Blue | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Fleece Performance Products

Fleece FPE-DMAX-OC-BLU Oil Cap Blue | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: FLCFPE-DMAX-OC-BLU
$39.99
ARP 900-0750 4.075 Bore Ring Compressor | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
ARP 900-0750 4.075 Bore Ring Compressor | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

ARP

ARP 900-0750 4.075 Bore Ring Compressor | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: ARP900-0750
$97.13
ARP 100-7534 Hex Head Valve Cover Bolt Kit | 2004.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
ARP 100-7534 Hex Head Valve Cover Bolt Kit | 2004.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

ARP

ARP 100-7534 Hex Head Valve Cover Bolt Kit | 2004.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: ARP100-7534
$105.53
$201.29
Edge 98611 EAS Expandable Probe | Universal
IN STOCK
Edge 98611 EAS Expandable Probe | Universal
Edge 98611 EAS Expandable Probe | Universal
Edge 98611 EAS Expandable Probe | Universal

Edge Products

Edge 98611 EAS Expandable Probe | Universal

SKU: EDG98611
$188.95
$212.95
Edge 98605 5 Volt EAS Sensor Input | Universal
IN STOCK
Edge 98605 5 Volt EAS Sensor Input | Universal
Edge 98605 5 Volt EAS Sensor Input | Universal

Edge Products

Edge 98605 5 Volt EAS Sensor Input | Universal

SKU: EDG98605
$254.95
$286.95
BD Diesel 1036627 High Idle Kit | 2008-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
IN STOCK
BD Diesel 1036627 High Idle Kit | 2008-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

BD Diesel

BD Diesel 1036627 High Idle Kit | 2008-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: BDD1036627
$342.95
$361
Wehrli 100699 Billet Heater Core Fitting with Hose | Universal
IN STOCK
Wehrli 100699 Billet Heater Core Fitting with Hose | Universal
Wehrli 100699 Billet Heater Core Fitting with Hose | Universal

Wehrli Custom Fab

Wehrli 100699 Billet Heater Core Fitting with Hose | Universal

SKU: WCF100699
$75.66
Wehrli 100412 Cast Intake Horn | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Wehrli 100412 Cast Intake Horn | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Wehrli 100412 Cast Intake Horn | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Wehrli 100412 Cast Intake Horn | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Wehrli 100412 Cast Intake Horn | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Wehrli Custom Fab

Wehrli 100412 Cast Intake Horn | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: WCF100412-GB
From $388
PPE 1110200 Standard Xcelerator | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
IN STOCK
PPE 1110200 Standard Xcelerator | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 1110200 Standard Xcelerator | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 1110200 Standard Xcelerator | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE1110200
$449.99
PPE 110100103 Cast Iron Cylinder Head | 2004.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
IN STOCK
PPE 110100103 Cast Iron Cylinder Head | 2004.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 110100103 Cast Iron Cylinder Head | 2004.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 110100103 Cast Iron Cylinder Head | 2004.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 110100103 Cast Iron Cylinder Head | 2004.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE110100103
$1,349.99
SoCal Diesel 917369 Super Damper Diesel Harmonic Balancers | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
SoCal Diesel 917369 Super Damper Diesel Harmonic Balancers | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SoCal Diesel

SoCal Diesel 917369 Super Damper Diesel Harmonic Balancers | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: SLD917369
$438.07
Merchant 10263 Oil Cooler Install Kit | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Merchant 10263 Oil Cooler Install Kit | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Merchant Automotive

Merchant 10263 Oil Cooler Install Kit | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: MAT10263
$65.63
PPE 114002100 Oil Filter Mount Aluminum Billet | PPE/GM Filter Applications
PPE 114002100 Oil Filter Mount Aluminum Billet | PPE/GM Filter Applications
PPE 114002100 Oil Filter Mount Aluminum Billet | PPE/GM Filter Applications
PPE 114002100 Oil Filter Mount Aluminum Billet | PPE/GM Filter Applications
PPE 114002100 Oil Filter Mount Aluminum Billet | PPE/GM Filter Applications

PPE

PPE 114002100 Oil Filter Mount Aluminum Billet | PPE/GM Filter Applications

SKU: PPE114002100
$143.99
$159.99
Merchant Automotive 10345 Water Pump Gasket Kit | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax
Merchant Automotive 10345 Water Pump Gasket Kit | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax

Merchant Automotive

Merchant Automotive 10345 Water Pump Gasket Kit | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax

SKU: MAT10345
$41.72
Fluidampr 300010 Harmonic Balancer Bolt Kit | 2001-2018 GM/Chevy Silverado 2500HD/3500HD 6.6L Duramax
Fluidampr 300010 Harmonic Balancer Bolt Kit | 2001-2018 GM/Chevy Silverado 2500HD/3500HD 6.6L Duramax

Fluidampr

Fluidampr 300010 Harmonic Balancer Bolt Kit | 2001-2018 GM/Chevy Silverado 2500HD/3500HD 6.6L Duramax

SKU: FLU300010
$88.43
$104.04
PPE 118021455 Valve Cover Kit w/o Accessory Mounting | 2004-2010 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax
IN STOCK
PPE 118021455 Valve Cover Kit w/o Accessory Mounting | 2004-2010 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax
PPE 118021455 Valve Cover Kit w/o Accessory Mounting | 2004-2010 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax
PPE 118021455 Valve Cover Kit w/o Accessory Mounting | 2004-2010 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax

PPE

PPE 118021455 Valve Cover Kit w/o Accessory Mounting | 2004-2010 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax

SKU: PPE118021455
$287.99
$319.99
Wagler C6658 Street Girdle | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Wagler C6658 Street Girdle | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Wagler Competition Products

Wagler C6658 Street Girdle | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: WCPC6658
$850
PPE 119021010 EGR to CAB Coolant Hose | 2007.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM
PPE 119021010 EGR to CAB Coolant Hose | 2007.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM

PPE

PPE 119021010 EGR to CAB Coolant Hose | 2007.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM

SKU: PPE119021010
$15.29
PPE 114025010 Check Valve Crankcase Breather Filter Kit | 2004.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
IN STOCK
PPE 114025010 Check Valve Crankcase Breather Filter Kit | 2004.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 114025010 Check Valve Crankcase Breather Filter Kit | 2004.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE114025010
$44.99
PPE 114010200 Oil Centrifuge Filtration Kit | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
IN STOCK
PPE 114010200 Oil Centrifuge Filtration Kit | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 114010200 Oil Centrifuge Filtration Kit | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 114010200 Oil Centrifuge Filtration Kit | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE114010200
$449.99
Merchant 98045057 Grade C Right Head Gasket | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Merchant 98045057 Grade C Right Head Gasket | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Merchant Automotive

Merchant 98045057 Grade C Right Head Gasket | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: MAT98045057
$99.72

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DIESEL TRUCK EXPERTS STANDING BY

The GM 2500/3500's equipped with a 6.6L Duramax LMM under the hood already come with tons of horsepower and torque off the factory line, but additional power and performance has never hurt any truck. Here at Alligator Performance, we offer a ton of engine parts and upgrades that are designed specifically to give your 6.6L Duramax engine improved throttle response, power and performance, taking your GM 2500/3500 truck to the next level in every situation. Check out our 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 2007.5-2010 GM 6.6L Duramax LMM Transmission Upgrades to compliment the increase in power you're throwing down! GM Duramax Fitments: 2007, 2008, 2009, 2010 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>2007.5-2010 6.6L LMM
Tuners & Monitors
Cooling Upgrades
Head Studs & Main Studs
Rods, Pistons & Cams
Heads & Valve Train

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