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

Availability
Manufacturer
Make
Model
Year
Price
$0
$29,059.40
Rating
Loading products...
Filter
364 products
Sort by:
Best selling
Availability
Manufacturer
Make
Model
Year
Price
$0
$29,059.40
Rating
Tuner DT8150010104030 Street Tune incl EFI Live SPADE | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT8150010104030 Street Tune incl EFI Live SPADE | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT8150010104030 Street Tune incl EFI Live SPADE | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT8150010104030
$808
Tuner DT8150010104040 Street Tune incl EFI Live SPADE | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT8150010104040 Street Tune incl EFI Live SPADE | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT8150010104040 Street Tune incl EFI Live SPADE | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT8150010104040
$808
Tuner DT8150010104020 Street Tune incl EFI Live SPADE | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT8150010104020 Street Tune incl EFI Live SPADE | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT8150010104020 Street Tune incl EFI Live SPADE | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT8150010104020
$808
Tuner DT8150010103060 Sport Tune incl EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT8150010103060 Sport Tune incl EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT8150010103060 Sport Tune incl EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT8150010103060
$808
Tuner DT8150010103040 Sport Tune incl EFI Live SPADE | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT8150010103040 Sport Tune incl EFI Live SPADE | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT8150010103040
$808
Tuner DT8150010103050 Sport Tune incl EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT8150010103050 Sport Tune incl EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT8150010103050 Sport Tune incl EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT8150010103050
$808
Tuner DT8150010103030 Sport Tune incl EFI Live SPADE | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT8150010103030 Sport Tune incl EFI Live SPADE | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT8150010103030 Sport Tune incl EFI Live SPADE | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT8150010103030
$808
Tuner DT8150010103020 Sport Tune incl EFI Live SPADE | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT8150010103020 Sport Tune incl EFI Live SPADE | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT8150010103020 Sport Tune incl EFI Live SPADE | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT8150010103020
$808
Tuner DT1150010107069 Optimized Stock Tune incl EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010107069 Optimized Stock Tune incl EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010107069 Optimized Stock Tune incl EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010107069
$808
Tuner DT1150010107059 Optimized Stock Tune incl EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010107059 Optimized Stock Tune incl EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010107059 Optimized Stock Tune incl EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010107059
$808
Tuner DT1150010107049 Optimized Stock Tune incl EFI Live SPADE | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010107049 Optimized Stock Tune incl EFI Live SPADE | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010107049 Optimized Stock Tune incl EFI Live SPADE | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010107049
$808
Tuner DT1150010107039 Optimized Stock Tune incl EFI Live SPADE | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010107039 Optimized Stock Tune incl EFI Live SPADE | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010107039 Optimized Stock Tune incl EFI Live SPADE | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010107039
$808
Tuner DT1150010107029 Optimized Stock Tune incl EFI Live SPADE | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010107029 Optimized Stock Tune incl EFI Live SPADE | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010107029 Optimized Stock Tune incl EFI Live SPADE | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010107029
$808
Tuner DT1150010106069 Heavy Tow Tune incl EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010106069 Heavy Tow Tune incl EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010106069 Heavy Tow Tune incl EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010106069
$808
Tuner DT1150010106049 Heavy Tow Tune incl EFI Live SPADE | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010106049 Heavy Tow Tune incl EFI Live SPADE | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010106049 Heavy Tow Tune incl EFI Live SPADE | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010106049
$808
Tuner DT1150010106039 Heavy Tow Tune incl EFI Live SPADE | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010106039 Heavy Tow Tune incl EFI Live SPADE | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010106039 Heavy Tow Tune incl EFI Live SPADE | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010106039
$808
Tuner DT1150010106029 Heavy Tow Tune incl EFI Live SPADE | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010106029 Heavy Tow Tune incl EFI Live SPADE | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010106029 Heavy Tow Tune incl EFI Live SPADE | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010106029
$808
Tuner DT1150010105069 Light Tow Tune incl EFI Live SPADE | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010105069 Light Tow Tune incl EFI Live SPADE | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010105069 Light Tow Tune incl EFI Live SPADE | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010105069
$808
Tuner DT1150010105059 Light Tow Tune incl EFI Live SPADE | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010105059 Light Tow Tune incl EFI Live SPADE | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010105059 Light Tow Tune incl EFI Live SPADE | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010105059
$808
Tuner DT1150010105049 Light Tow Tune incl EFI Live SPADE | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010105049 Light Tow Tune incl EFI Live SPADE | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010105049 Light Tow Tune incl EFI Live SPADE | 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010105049
$808
Tuner DT1150010105039 Light Tow Tune incl EFI Live SPADE | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010105039 Light Tow Tune incl EFI Live SPADE | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010105039 Light Tow Tune incl EFI Live SPADE | 2013 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010105039
$808
Tuner DT1150010105029 Light Tow Tune incl EFI Live SPADE | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010105029 Light Tow Tune incl EFI Live SPADE | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010105029 Light Tow Tune incl EFI Live SPADE | 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010105029
$808
Tuner DT1150010105019 Light Tow Tune incl EFI Live AutoCal v3 | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010105019 Light Tow Tune incl EFI Live AutoCal v3 | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010105019 Light Tow Tune incl EFI Live AutoCal v3 | 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010105019
$808
Tuner DT1150010104069 Street Tune incl EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010104069 Street Tune incl EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010104069 Street Tune incl EFI Live Spade | 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010104069
$808

FREE SHIPPING ON ALL
ORDERS OVER $70

PRICE MATCH GUARANTEE

BUILD NOW, PAY LATER
FINANCING OPTIONS

30-DAY RETURN SATISFACTION GUARANTEE

DIESEL TRUCK EXPERTS STANDING BY

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

Can We Help You Find Something?

Give us a call: +1-208-719-7400

Chat With Us
THE GARAGE

The Garage

Welcome to The Garage – your one-stop shop for all your car care and maintenance needs. From premium oils and filters to top-notch car care products, we have everything you need to keep your vehicle running smoothly and looking its best. Whether you're a DIY enthusiast or a professional mechanic, our carefully curated selection of high-quality products will help you take care of your ride like never before.

Shop The Garage