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 DT1150010006039 Heavy Tow Tune Only for EFI Live Spade | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010006039 Heavy Tow Tune Only for EFI Live Spade | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010006039 Heavy Tow Tune Only for EFI Live Spade | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010006039
$300
Tuner DT1150010006029 Heavy Tow Tune Only for EFI Live Spade | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010006029 Heavy Tow Tune Only for EFI Live Spade | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010006029 Heavy Tow Tune Only for EFI Live Spade | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010006029
$300
Tuner DT1150010006019 Heavy Tow Tune Only for EFI Live Spade | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010006019 Heavy Tow Tune Only for EFI Live Spade | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010006019 Heavy Tow Tune Only for EFI Live Spade | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010006019
$300
Tuner DT1150010005069 Light Tow Tune Only for EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010005069 Light Tow Tune Only for EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010005069 Light Tow Tune Only for EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010005069
$300
Tuner DT1150010005059 Light Tow Tune Only for EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010005059 Light Tow Tune Only for EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010005059 Light Tow Tune Only for EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010005059
$300
Tuner DT1150010005049 Light Tow Tune Only for EFI Live Spade | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010005049 Light Tow Tune Only for EFI Live Spade | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010005049 Light Tow Tune Only for EFI Live Spade | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010005049
$300
Tuner DT1150010005039 Light Tow Tune Only for EFI Live Spade | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010005039 Light Tow Tune Only for EFI Live Spade | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010005039 Light Tow Tune Only for EFI Live Spade | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010005039
$300
Tuner DT1150010005029 Light Tow Tune Only for EFI Live Spade | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010005029 Light Tow Tune Only for EFI Live Spade | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010005029 Light Tow Tune Only for EFI Live Spade | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010005029
$300
Tuner DT1150010005019 Light Tow Tune Only for EFI Live Spade | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010005019 Light Tow Tune Only for EFI Live Spade | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010005019 Light Tow Tune Only for EFI Live Spade | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010005019
$300
Tuner DT1150010004069 Street Tune Only for EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010004069 Street Tune Only for EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010004069 Street Tune Only for EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010004069
$300
Tuner DT1150010004059 Street Tune Only for EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010004059 Street Tune Only for EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010004059 Street Tune Only for EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010004059
$300
Tuner DT1150010004049 Street Tune Only for EFI Live Spade | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010004049 Street Tune Only for EFI Live Spade | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010004049 Street Tune Only for EFI Live Spade | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010004049
$300
Tuner DT1150010004039 Street Tune Only for EFI Live Spade | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010004039 Street Tune Only for EFI Live Spade | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010004039 Street Tune Only for EFI Live Spade | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010004039
$300
Tuner DT1150010004029 Street Tune Only for EFI Live Spade | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010004029 Street Tune Only for EFI Live Spade | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010004029 Street Tune Only for EFI Live Spade | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010004029
$300
Tuner DT1150010004019 Street Tune Only for EFI Live Spade | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010004019 Street Tune Only for EFI Live Spade | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010004019 Street Tune Only for EFI Live Spade | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010004019
$300
Tuner DT1150010003069 Sport Tune Only for EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010003069 Sport Tune Only for EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010003069 Sport Tune Only for EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010003069
$300
Tuner DT1150010003059 Sport Tune Only for EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010003059 Sport Tune Only for EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010003059 Sport Tune Only for EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010003059
$300
Tuner DT1150010003049 Sport Tune Only for EFI Live Spade | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010003049 Sport Tune Only for EFI Live Spade | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010003049 Sport Tune Only for EFI Live Spade | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010003049
$300
Tuner DT1150010003039 Sport Tune Only for EFI Live Spade | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010003039 Sport Tune Only for EFI Live Spade | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010003039 Sport Tune Only for EFI Live Spade | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010003039
$300
Tuner DT1150010003029 Sport Tune Only for EFI Live Spade | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010003029 Sport Tune Only for EFI Live Spade | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010003029 Sport Tune Only for EFI Live Spade | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010003029
$300
Tuner DT1150010003019 Sport Tune Only for EFI Live Spade | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010003019 Sport Tune Only for EFI Live Spade | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010003019 Sport Tune Only for EFI Live Spade | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010003019
$300
Edge 23414-3 Pulsar LT & CTS3 Combo Package with Mount | 2015-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Edge 23414-3 Pulsar LT & CTS3 Combo Package with Mount | 2015-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Edge 23414-3 Pulsar LT & CTS3 Combo Package with Mount | 2015-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Edge Products

Edge 23414-3 Pulsar LT & CTS3 Combo Package with Mount | 2015-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PUL23414-3
$1,249.95
DuramaxTuner 1101A022 SOTF Switch Yellow Black | 2011-2012 GM 2500HD/3500HD 6.6L Duramax
DuramaxTuner 1101A022 SOTF Switch Yellow Black | 2011-2012 GM 2500HD/3500HD 6.6L Duramax

Duramax Tuner

DuramaxTuner 1101A022 SOTF Switch Yellow Black | 2011-2012 GM 2500HD/3500HD 6.6L Duramax

SKU: DMT1101A022
$40
Industrial PDM-LMLSTKLB Stock Long Block | 2011-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Industrial PDM-LMLSTKLB Stock Long Block | 2011-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Industrial Injection

Industrial PDM-LMLSTKLB Stock Long Block | 2011-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: IISPDM-LMLSTKLB
$13,780.79

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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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