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 DT8150010004030 Street Tune Only for EFI Live Spade | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT8150010004030 Street Tune Only for EFI Live Spade | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT8150010004030 Street Tune Only for EFI Live Spade | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT8150010004030
$300
Tuner DT8150010004020 Street Tune Only for EFI Live Spade | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT8150010004020 Street Tune Only for EFI Live Spade | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT8150010004020 Street Tune Only for EFI Live Spade | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT8150010004020
$300
Tuner DT8150010004010 Street Tune Only for EFI Live Spade | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT8150010004010 Street Tune Only for EFI Live Spade | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT8150010004010 Street Tune Only for EFI Live Spade | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT8150010004010
$300
Tuner DT8150010003060 Sport Tune Only for EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT8150010003060 Sport Tune Only for EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT8150010003060 Sport Tune Only for EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT8150010003060
$300
Tuner DT8150010003040 Sport Tune Only for EFI Live Spade | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT8150010003040 Sport Tune Only for EFI Live Spade | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT8150010003040 Sport Tune Only for EFI Live Spade | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT8150010003040
$300
Tuner DT8150010003050 Sport Tune Only for EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT8150010003050 Sport Tune Only for EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT8150010003050 Sport Tune Only for EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT8150010003050
$300
Tuner DT8150010003030 Sport Tune Only for EFI Live Spade | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT8150010003030 Sport Tune Only for EFI Live Spade | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT8150010003030 Sport Tune Only for EFI Live Spade | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT8150010003030
$300
Tuner DT8150010003020 Sport Tune Only for EFI Live Spade | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT8150010003020 Sport Tune Only for EFI Live Spade | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT8150010003020 Sport Tune Only for EFI Live Spade | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT8150010003020
$300
Tuner DT8150010003010 Sport Tune Only for EFI Live Spade | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT8150010003010 Sport Tune Only for EFI Live Spade | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT8150010003010 Sport Tune Only for EFI Live Spade | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT8150010003010
$300
Tuner DT1150010008060 Transmission Tune Only for EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010008060 Transmission Tune Only for EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010008060 Transmission Tune Only for EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010008060
$300
Tuner DT1150010008050 Transmission Tune Only for EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010008050 Transmission Tune Only for EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010008050 Transmission Tune Only for EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010008050
$300
Tuner DT1150010008040 Transmission Tune Only for EFI Live Spade | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010008040 Transmission Tune Only for EFI Live Spade | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010008040 Transmission Tune Only for EFI Live Spade | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010008040
$300
Tuner DT1150010008030 Transmission Tune Only for EFI Live Spade | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010008030 Transmission Tune Only for EFI Live Spade | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010008030 Transmission Tune Only for EFI Live Spade | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010008030
$300
Tuner DT1150010008020 Transmission Tune Only for EFI Live Spade | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010008020 Transmission Tune Only for EFI Live Spade | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010008020 Transmission Tune Only for EFI Live Spade | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010008020
$300
Tuner DT1150010008010 Transmission Tune Only for EFI Live Hardware | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010008010 Transmission Tune Only for EFI Live Hardware | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010008010 Transmission Tune Only for EFI Live Hardware | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010008010
$300
Tuner DT1150010007069 Optimized Stock Tune Only for EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010007069 Optimized Stock Tune Only for EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010007069 Optimized Stock Tune Only for EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010007069
$300
Tuner DT1150010007059 Optimized Stock Tune Only for EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010007059 Optimized Stock Tune Only for EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010007059 Optimized Stock Tune Only for EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010007059
$300
Tuner DT1150010007049 Optimized Stock Tune Only for EFI Live Spade | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010007049 Optimized Stock Tune Only for EFI Live Spade | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010007049 Optimized Stock Tune Only for EFI Live Spade | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010007049
$300
Tuner DT1150010007039 Optimized Stock Tune Only for EFI Live Spade | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010007039 Optimized Stock Tune Only for EFI Live Spade | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010007039 Optimized Stock Tune Only for EFI Live Spade | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010007039
$300
Tuner DT1150010007029 Optimized Stock Tune Only for EFI Live Spade | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010007029 Optimized Stock Tune Only for EFI Live Spade | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010007029 Optimized Stock Tune Only for EFI Live Spade | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010007029
$300
Tuner DT1150010007019 Optimized Stock Tune Only for EFI Live Spade | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010007019 Optimized Stock Tune Only for EFI Live Spade | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010007019 Optimized Stock Tune Only for EFI Live Spade | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010007019
$300
Tuner DT1150010006069 Heavy Tow Tune Only for EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010006069 Heavy Tow Tune Only for EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010006069 Heavy Tow Tune Only for EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010006069
$300
Tuner DT1150010006059 Heavy Tow Tune Only for EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010006059 Heavy Tow Tune Only for EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010006059 Heavy Tow Tune Only for EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010006059
$300
Tuner DT1150010006049 Heavy Tow Tune Only for EFI Live Spade | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010006049 Heavy Tow Tune Only for EFI Live Spade | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010006049 Heavy Tow Tune Only for EFI Live Spade | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010006049
$300

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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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