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

2007.5-2010 6.6L Silverado & Sierra 2500HD/3500HD

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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Wehrli 100424 Top Outlet Billet Thermostat Housing & Upper Coolant Pipe Kit for Dual CP3 | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Wehrli 100424 Top Outlet Billet Thermostat Housing & Upper Coolant Pipe Kit for Dual CP3 | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Wehrli 100424 Top Outlet Billet Thermostat Housing & Upper Coolant Pipe Kit for Dual CP3 | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Wehrli Custom Fab

Wehrli 100424 Top Outlet Billet Thermostat Housing & Upper Coolant Pipe Kit for Dual CP3 | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: WCF100424-GB
From $459.78
PPE 119000510 Engine Coolant Thermostat Housing (Single Sensor) | 2007.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM
PPE 119000510 Engine Coolant Thermostat Housing (Single Sensor) | 2007.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM
PPE 119000510 Engine Coolant Thermostat Housing (Single Sensor) | 2007.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM
PPE 119000510 Engine Coolant Thermostat Housing (Single Sensor) | 2007.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM
PPE 119000510 Engine Coolant Thermostat Housing (Single Sensor) | 2007.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM

PPE

PPE 119000510 Engine Coolant Thermostat Housing (Single Sensor) | 2007.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM

SKU: PPE119000510
$269.99
PPE 119000515 Engine Coolant Thermostat Housing | 2007.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM
PPE 119000515 Engine Coolant Thermostat Housing | 2007.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM
PPE 119000515 Engine Coolant Thermostat Housing | 2007.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM
PPE 119000515 Engine Coolant Thermostat Housing | 2007.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM
PPE 119000515 Engine Coolant Thermostat Housing | 2007.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM

PPE

PPE 119000515 Engine Coolant Thermostat Housing | 2007.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM

SKU: PPE119000515
$269.99
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 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 113061094 Idler Pulley 3 inch OD OEM Size | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 113061094 Idler Pulley 3 inch OD OEM Size | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 113061094 Idler Pulley 3 inch OD OEM Size | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE113061094
$35.99
PPE 118021430 Valve Cover Kit with out Pillars - Polished | 2004-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 118021430 Valve Cover Kit with out Pillars - Polished | 2004-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 118021430 Valve Cover Kit with out Pillars - Polished | 2004-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE118021430
$287.99
PPE 118021423 Valve Cover Kit with out Pillars - Gold | 2004-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
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 118021412 Valve Cover Kit with out Pillars - Red | 2004.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 118021412 Valve Cover Kit with out Pillars - Red | 2004.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 118021412 Valve Cover Kit with out Pillars - Red | 2004.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE118021412
$287.99
PPE 118021230 Valve Cover Kit with Pillars - Polished | 2005-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 118021230 Valve Cover Kit with Pillars - Polished | 2005-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 118021230 Valve Cover Kit with Pillars - Polished | 2005-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE118021230
$305.99
PPE 118021222 Valve Cover Kit with Pillars - Blue | 2005-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 118021222 Valve Cover Kit with Pillars - Blue | 2005-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 118021222 Valve Cover Kit with Pillars - Blue | 2005-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE118021222
$305.99
PPE 118021220 Valve Cover Kit with Pillars - Black | 2005-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 118021220 Valve Cover Kit with Pillars - Black | 2005-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 118021220 Valve Cover Kit with Pillars - Black | 2005-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 118021220 Valve Cover Kit with Pillars - Black | 2005-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE118021220
$305.99
PPE 118021212 Valve Cover Kit with Pillars - Red | 2005-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 118021212 Valve Cover Kit with Pillars - Red | 2005-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 118021212 Valve Cover Kit with Pillars - Red | 2005-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 118021212 Valve Cover Kit with Pillars - Red | 2005-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE118021212
$305.99
PPE 110100103 Cast Iron Cylinder Head | 2004.5-010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 110100103 Cast Iron Cylinder Head | 2004.5-010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 110100103 Cast Iron Cylinder Head | 2004.5-010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 110100103 Cast Iron Cylinder Head | 2004.5-010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 110100103 Cast Iron Cylinder Head | 2004.5-010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE110100103
$1,349.99
Choate Engineering CEP66LMMSW 6.6L Duramax Workhorse Short Block | 2007-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM
Choate Engineering CEP66LMMSW 6.6L Duramax Workhorse Short Block | 2007-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM

Choate Engineering

Choate Engineering CEP66LMMSW 6.6L Duramax Workhorse Short Block | 2007-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM

SKU: CHTCEP66LMMSW
$11,100
Choate Engineering CEP66LMMLD 6.6L Duramax LMM Long Block Daily Driver Crate Engine | 2007.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM
Choate Engineering CEP66LMMLD 6.6L Duramax LMM Long Block Daily Driver Crate Engine | 2007.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM

Choate Engineering

Choate Engineering CEP66LMMLD 6.6L Duramax LMM Long Block Daily Driver Crate Engine | 2007.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM

SKU: CHTCEP66LMMLD
$12,700
Choate Engineering CEP66LMMSD 6.6L Duramax Daily Driver Short Block | 2007.5-2010 6.6L Duramax LMM
Choate Engineering CEP66LMMSD 6.6L Duramax Daily Driver Short Block | 2007.5-2010 6.6L Duramax LMM

Choate Engineering

Choate Engineering CEP66LMMSD 6.6L Duramax Daily Driver Short Block | 2007.5-2010 6.6L Duramax LMM

SKU: CHTCEP66LMMSD
$9,000
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
Cometic C5883-045 MLS Cylinder Head Gasket - .045 inch Bore 4.100 inch LHS | 2007-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Cometic C5883-045 MLS Cylinder Head Gasket - .045 inch Bore 4.100 inch LHS | 2007-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Cometic

Cometic C5883-045 MLS Cylinder Head Gasket - .045 inch Bore 4.100 inch LHS | 2007-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: COMC5883-045
$147.30
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 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
Gator Fasteners MSK66ZM Heavy Duty Main Stud Kit | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Gator Fasteners MSK66ZM Heavy Duty Main Stud Kit | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Gator Fasteners

Gator Fasteners MSK66ZM Heavy Duty Main Stud Kit | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: GTFMSK66ZM
$279.99
Tuner DT8140010101000 Switch on the Fly Tune with EFI Live Spade 50 State CARB Legal | 2007.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM
Tuner DT8140010101000 Switch on the Fly Tune with EFI Live Spade 50 State CARB Legal | 2007.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM

Duramax Tuner

Tuner DT8140010101000 Switch on the Fly Tune with EFI Live Spade 50 State CARB Legal | 2007.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM

SKU: DMTDT8140010101000
$1,140
uner DT1140010101009 Switch on the Fly Tune incl EFI Live Spade 49 State Legal | 2007.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM
uner DT1140010101009 Switch on the Fly Tune incl EFI Live Spade 49 State Legal | 2007.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM

Duramax Tuner

uner DT1140010101009 Switch on the Fly Tune incl EFI Live Spade 49 State Legal | 2007.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM

SKU: DMTDT1140010101009
$1,140
Tuner DT8140010107000 Optimized Stock Tune incl EFI Live Spade | 2007.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM
Tuner DT8140010107000 Optimized Stock Tune incl EFI Live Spade | 2007.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM

Duramax Tuner

Tuner DT8140010107000 Optimized Stock Tune incl EFI Live Spade | 2007.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM

SKU: DMTDT8140010107000
$808
Tuner DT8140010106000 Heavy Tow Tune incl EFI Live Spade | 2007.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM
Tuner DT8140010106000 Heavy Tow Tune incl EFI Live Spade | 2007.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM

Duramax Tuner

Tuner DT8140010106000 Heavy Tow Tune incl EFI Live Spade | 2007.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM

SKU: DMTDT8140010106000
$808

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2007.5-2010 6.6L Silverado & Sierra 2500HD/3500HD

Power Lift Shop All

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, 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
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Rods, Pistons & Cams
Heads & Valve Train

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