2011-2016 GM 2500HD/3500HD 6.6L LM Duramax Engine & Performance

2011-2016 6.6L Silverado & Sierra 2500HD/3500HD

2011-2016 GM 2500HD/3500HD 6.6L LML Duramax Crate Engines

Crate Engines

2011-2016 GM 2500HD/3500HD 6.6L LML Duramax Gaskets, Gasket Kits & Bearings

Gaskets

2011-2016 GM 2500HD/3500HD 6.6L LML Duramax Glow Plugs

Glow Plugs

2011-2016 GM 2500HD/3500HD 6.6L LML Duramax Head Studs & Main Studs

Head Studs & Main Studs

2011-2016 GM 2500HD/3500HD 6.6L LML Duramax Heads & Valve Train

Heads & Valve Train

2011-2016 GM 2500HD/3500HD 6.6L LML Duramax Motor Mounts

Motor Mounts

2011-2016 GM 2500HD/3500HD 6.6L LML Duramax Oil Pans

Oil Pans

2011-2016 GM 2500HD/3500HD 6.6L LML Duramax Radiators & Cooling Upgrades

Radiators & Cooling Upgrades

2011-2016 GM 2500HD/3500HD 6.6L LML Duramax Rebuild Kits & Internal Parts

Rebuild Kits & Internal Parts

2011-2016 GM 2500HD/3500HD 6.6L LML Duramax Rods, Pistons, Cams & More

Rods/Pistons/Cams & More

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Tuner DT1150010104059 Street Tune incl EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010104059 Street Tune incl EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010104059 Street Tune incl EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010104059
$808
Tuner DT1150010104049 Street Tune incl EFI Live SPADE | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010104049 Street Tune incl EFI Live SPADE | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010104049 Street Tune incl EFI Live SPADE | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010104049
$808
Tuner DT1150010104039 Street Tune incl EFI Live SPADE | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010104039 Street Tune incl EFI Live SPADE | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010104039 Street Tune incl EFI Live SPADE | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010104039
$808
Tuner DT1150010104029 Street Tune incl EFI Live SPADE | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010104029 Street Tune incl EFI Live SPADE | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010104029 Street Tune incl EFI Live SPADE | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010104029
$808
Tuner DT1150010103069 Sport Tune incl EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010103069 Sport Tune incl EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010103069 Sport Tune incl EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010103069
$808
Tuner DT1150010103059 Sport Tune incl EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010103059 Sport Tune incl EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010103059 Sport Tune incl EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010103059
$808
Tuner DT1150010103049 Sport Tune incl EFI Live SPADE | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010103049 Sport Tune incl EFI Live SPADE | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010103049 Sport Tune incl EFI Live SPADE | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010103049
$808
Tuner DT1150010103039 Sport Tune incl EFI Live SPADE | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010103039 Sport Tune incl EFI Live SPADE | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010103039 Sport Tune incl EFI Live SPADE | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010103039
$808
Tuner DT1150010103029 Sport Tune incl EFI Live SPADE | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010103029 Sport Tune incl EFI Live SPADE | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010103029 Sport Tune incl EFI Live SPADE | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010103029
$808
Tuner DT8150020009060 FIVE Tune Pack Only for EZ Lynk Auto Agent 2.0 | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT8150020009060 FIVE Tune Pack Only for EZ Lynk Auto Agent 2.0 | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT8150020009060 FIVE Tune Pack Only for EZ Lynk Auto Agent 2.0 | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT8150020009060
$850
Tuner DT8150020009050 50 State Legal FIVE Tune Pack Only for EZ Lynk Auto Agent 2.0 | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT8150020009050 50 State Legal FIVE Tune Pack Only for EZ Lynk Auto Agent 2.0 | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT8150020009050 50 State Legal FIVE Tune Pack Only for EZ Lynk Auto Agent 2.0 | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT8150020009050
$850
Tuner DT8150020009040 50 State Legal FIVE Tune Pack Only for EZ Lynk Auto Agent 2.0 | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT8150020009040 50 State Legal FIVE Tune Pack Only for EZ Lynk Auto Agent 2.0 | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT8150020009040 50 State Legal FIVE Tune Pack Only for EZ Lynk Auto Agent 2.0 | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT8150020009040
$850
Tuner DT8150020009030 50 State Legal FIVE Tune Pack Only for EZ Lynk Auto Agent 2.0 | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT8150020009030 50 State Legal FIVE Tune Pack Only for EZ Lynk Auto Agent 2.0 | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT8150020009030 50 State Legal FIVE Tune Pack Only for EZ Lynk Auto Agent 2.0 | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT8150020009030
$850
Tuner DT8150020009020 50 State Legal FIVE Tune Pack Only for EZ Lynk Auto Agent 2.0 | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT8150020009020 50 State Legal FIVE Tune Pack Only for EZ Lynk Auto Agent 2.0 | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT8150020009020 50 State Legal FIVE Tune Pack Only for EZ Lynk Auto Agent 2.0 | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT8150020009020
$850
Tuner DT8150020009010 50 State Legal FIVE Tune Pack Only for EZ Lynk Auto Agent 2.0 | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT8150020009010 50 State Legal FIVE Tune Pack Only for EZ Lynk Auto Agent 2.0 | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT8150020009010 50 State Legal FIVE Tune Pack Only for EZ Lynk Auto Agent 2.0 | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT8150020009010
$850
Tuner DT8150010109060 50 State Legal FIVE Tune Pack Only for EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT8150010109060 50 State Legal FIVE Tune Pack Only for EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT8150010109060 50 State Legal FIVE Tune Pack Only for EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT8150010109060
$550
Tuner DT8150010109040 50 State Legal FIVE Tune Pack Only for EFI Live Spade | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT8150010109040 50 State Legal FIVE Tune Pack Only for EFI Live Spade | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT8150010109040 50 State Legal FIVE Tune Pack Only for EFI Live Spade | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT8150010109040
$550
Tuner DT8150010109050 50 State Legal FIVE Tune Pack Only for EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT8150010109050 50 State Legal FIVE Tune Pack Only for EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT8150010109050 50 State Legal FIVE Tune Pack Only for EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT8150010109050
$550
Tuner DT8150010109030 50 State Legal FIVE Tune Pack Only for EFI Live Spade | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT8150010109030 50 State Legal FIVE Tune Pack Only for EFI Live Spade | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT8150010109030 50 State Legal FIVE Tune Pack Only for EFI Live Spade | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT8150010109030
$550
Tuner DT8150010109020 50 State Legal FIVE Tune Pack Only for EFI Live Spade | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT8150010109020 50 State Legal FIVE Tune Pack Only for EFI Live Spade | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT8150010109020 50 State Legal FIVE Tune Pack Only for EFI Live Spade | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT8150010109020
$550
Tuner DT8150010109010 50 State Legal FIVE Tune Pack Only for EFI Live Spade | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT8150010109010 50 State Legal FIVE Tune Pack Only for EFI Live Spade | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT8150010109010 50 State Legal FIVE Tune Pack Only for EFI Live Spade | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT8150010109010
$550
Tuner DT1150010109069 49 State Legal FIVE Tune Pack Only for EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010109069 49 State Legal FIVE Tune Pack Only for EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010109069 49 State Legal FIVE Tune Pack Only for EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010109069
$550
Tuner DT1150010109059 49 State Legal FIVE Tune Pack Only for EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010109059 49 State Legal FIVE Tune Pack Only for EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010109059 49 State Legal FIVE Tune Pack Only for EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010109059
$550
Tuner DT1150010109039 49 State Legal FIVE Tune Pack Only for EFI Live Spade | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010109039 49 State Legal FIVE Tune Pack Only for EFI Live Spade | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010109039 49 State Legal FIVE Tune Pack Only for EFI Live Spade | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010109039
$550

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2011-2016 6.6L Silverado & Sierra 2500HD/3500HD

Power Lift Shop All

The 2011-2016 GM 6.6L Duramax LML's already comes equipped 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 circumstance. 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 help promote component longevity so you can enjoy a 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 2011-2016 GM 6.6L Duramax LML Transmission Upgrades to compliment the increase in power you're throwing down! GM Duramax Fitments: 2011, 2012, 2013, 2014, 2015, 2016 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>2011-2016 6.6L LML
Tuners & Monitors
Cooling Upgrades
Head Studs & Main Studs
Rods, Pistons & Cams
Heads & Valve Train

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