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

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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PPE 118026010 Stage 1 Performance Camshaft - Standard Fire | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
IN STOCK
PPE 118026010 Stage 1 Performance Camshaft - Standard Fire | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 118026010 Stage 1 Performance Camshaft - Standard Fire | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 118026010 Stage 1 Performance Camshaft - Standard Fire | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 118026010 Stage 1 Performance Camshaft - Standard Fire | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE118026010
$629.99
$699.99
SAVE $70
Wehrli 100696 Upper Coolant Pipe Kit | 2011-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Wehrli 100696 Upper Coolant Pipe Kit | 2011-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Wehrli 100696 Upper Coolant Pipe Kit | 2011-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Wehrli 100696 Upper Coolant Pipe Kit | 2011-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Wehrli 100696 Upper Coolant Pipe Kit | 2011-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Wehrli Custom Fab

Wehrli 100696 Upper Coolant Pipe Kit | 2011-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: WCF100696-GB
From $155.20
Tuner DT1150010106059 Heavy Tow Tune incl EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Tuner DT1150010106059 Heavy Tow Tune incl EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Duramax Tuner

Tuner DT1150010106059 Heavy Tow Tune incl EFI Live Spade | 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: DMTDT1150010106059
$808
DFC Diesel KORE661116LMLSOALBCC Kore Series Speed of Air Callies Crankshaft Long Block (STD/Auto) | 2011-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax LML
DFC Diesel KORE661116LMLSOALBCC Kore Series Speed of Air Callies Crankshaft Long Block (STD/Auto) | 2011-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax LML

DFC Diesel

DFC Diesel KORE661116LMLSOALBCC Kore Series Speed of Air Callies Crankshaft Long Block (STD/Auto) | 2011-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax LML

SKU: DDUKORE661116LMLSOALBCC
$13,015.85
DFC Diesel KORE661116LMLSOALB Kore Series Speed of Air Long Block (STD/Auto) | 2011-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax LML
DFC Diesel KORE661116LMLSOALB Kore Series Speed of Air Long Block (STD/Auto) | 2011-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax LML

DFC Diesel

DFC Diesel KORE661116LMLSOALB Kore Series Speed of Air Long Block (STD/Auto) | 2011-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax LML

SKU: DDUKORE661116LMLSOALB
$10,675.04
DFC Diesel KORE661116LMLLBCC Kore Series Callies Crankshaft Long Block (STD/Auto) | 2011-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax LML
DFC Diesel KORE661116LMLLBCC Kore Series Callies Crankshaft Long Block (STD/Auto) | 2011-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax LML

DFC Diesel

DFC Diesel KORE661116LMLLBCC Kore Series Callies Crankshaft Long Block (STD/Auto) | 2011-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax LML

SKU: DDUKORE661116LMLLBCC
$9,915.85
DFC Diesel KORE661116LMLLB Kore Series Long Block (STD/Auto) | 2011-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax LML
DFC Diesel KORE661116LMLLB Kore Series Long Block (STD/Auto) | 2011-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax LML

DFC Diesel

DFC Diesel KORE661116LMLLB Kore Series Long Block (STD/Auto) | 2011-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax LML

SKU: DDUKORE661116LMLLB
$7,575.04
DFC Diesel 661116LMLSOASBCC Speed of Air Short Block (STD/AUTO) Callies Crankshaft | 2011-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax LML
DFC Diesel 661116LMLSOASBCC Speed of Air Short Block (STD/AUTO) Callies Crankshaft | 2011-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax LML
DFC Diesel 661116LMLSOASBCC Speed of Air Short Block (STD/AUTO) Callies Crankshaft | 2011-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax LML

DFC Diesel

DFC Diesel 661116LMLSOASBCC Speed of Air Short Block (STD/AUTO) Callies Crankshaft | 2011-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax LML

SKU: DDU661116LMLSOASBCC
$13,830.26
DFC Diesel 661116LMLSOASB Speed of Air Short Block (STD/AUTO) | 2011-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax LML
DFC Diesel 661116LMLSOASB Speed of Air Short Block (STD/AUTO) | 2011-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax LML
DFC Diesel 661116LMLSOASB Speed of Air Short Block (STD/AUTO) | 2011-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax LML

DFC Diesel

DFC Diesel 661116LMLSOASB Speed of Air Short Block (STD/AUTO) | 2011-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax LML

SKU: DDU661116LMLSOASB
$11,480.22
Industrial 44B112 Coated & De-Lipped X-Series Piston Kit (.040) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax
Industrial 44B112 Coated & De-Lipped X-Series Piston Kit (.040) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax
Industrial 44B112 Coated & De-Lipped X-Series Piston Kit (.040) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax
Industrial 44B112 Coated & De-Lipped X-Series Piston Kit (.040) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax

Industrial Injection

Industrial 44B112 Coated & De-Lipped X-Series Piston Kit (.040) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax

SKU: IIS44B112
$2,327.95
$2,399.95
SAVE $72
Industrial 44B111 Coated & De-Lipped X-Series Piston Kit (.030) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax
Industrial 44B111 Coated & De-Lipped X-Series Piston Kit (.030) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax
Industrial 44B111 Coated & De-Lipped X-Series Piston Kit (.030) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax
Industrial 44B111 Coated & De-Lipped X-Series Piston Kit (.030) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax

Industrial Injection

Industrial 44B111 Coated & De-Lipped X-Series Piston Kit (.030) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax

SKU: IIS44B111
$2,327.95
$2,399.95
SAVE $72
Industrial 44B110 Coated & De-Lipped X-Series Piston Kit (.020) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax
Industrial 44B110 Coated & De-Lipped X-Series Piston Kit (.020) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax
Industrial 44B110 Coated & De-Lipped X-Series Piston Kit (.020) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax
Industrial 44B110 Coated & De-Lipped X-Series Piston Kit (.020) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax

Industrial Injection

Industrial 44B110 Coated & De-Lipped X-Series Piston Kit (.020) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax

SKU: IIS44B110
$2,327.95
$2,399.95
SAVE $72
Industrial 44B109 Coated & De-Lipped X-Series Piston Kit (Standard) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax
Industrial 44B109 Coated & De-Lipped X-Series Piston Kit (Standard) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax
Industrial 44B109 Coated & De-Lipped X-Series Piston Kit (Standard) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax
Industrial 44B109 Coated & De-Lipped X-Series Piston Kit (Standard) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax

Industrial Injection

Industrial 44B109 Coated & De-Lipped X-Series Piston Kit (Standard) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax

SKU: IIS44B109
$2,327.95
$2,399.95
SAVE $72
Industrial 44B104 X-Series Piston Kit (.040) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax
Industrial 44B104 X-Series Piston Kit (.040) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax
Industrial 44B104 X-Series Piston Kit (.040) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax
Industrial 44B104 X-Series Piston Kit (.040) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax

Alligator Performance

Industrial 44B104 X-Series Piston Kit (.040) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax

SKU: IIS44B104
$1,842.95
$1,899.95
SAVE $57
Industrial 44B103 X-Series Piston Kit (.030) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax
Industrial 44B103 X-Series Piston Kit (.030) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax
Industrial 44B103 X-Series Piston Kit (.030) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax
Industrial 44B103 X-Series Piston Kit (.030) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax

Industrial Injection

Industrial 44B103 X-Series Piston Kit (.030) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax

SKU: IIS44B103
$1,842.95
$1,899.95
SAVE $57
Industrial 44B102 X-Series Piston Kit (.020) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax
Industrial 44B102 X-Series Piston Kit (.020) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax
Industrial 44B102 X-Series Piston Kit (.020) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax
Industrial 44B102 X-Series Piston Kit (.020) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax

Industrial Injection

Industrial 44B102 X-Series Piston Kit (.020) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax

SKU: IIS44B102
$1,842.95
$1,899.95
SAVE $57
Industrial 44B101 X-Series Piston Kit (Standard) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax
Industrial 44B101 X-Series Piston Kit (Standard) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax
Industrial 44B101 X-Series Piston Kit (Standard) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax
Industrial 44B101 X-Series Piston Kit (Standard) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax

Industrial Injection

Industrial 44B101 X-Series Piston Kit (Standard) | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax

SKU: IIS44B101
$1,842.95
$1,899.95
SAVE $57
Fluidampr 830121 Harmonic Balancers | 2011-2016 GM/Chevy Silverado 2500HD/3500HD 6.6L Duramax
Fluidampr 830121 Harmonic Balancers | 2011-2016 GM/Chevy Silverado 2500HD/3500HD 6.6L Duramax

Fluidampr

Fluidampr 830121 Harmonic Balancers | 2011-2016 GM/Chevy Silverado 2500HD/3500HD 6.6L Duramax

SKU: FLU830121
$574.82
$676.26
SAVE $101.44
Mahle 2243935WR Engine Piston | 2010-2016 GM Sierra/Silverado 2500HD/35000HD 6.6L Duramax
IN STOCK
Mahle 2243935WR Engine Piston | 2010-2016 GM Sierra/Silverado 2500HD/35000HD 6.6L Duramax
Mahle 2243935WR Engine Piston | 2010-2016 GM Sierra/Silverado 2500HD/35000HD 6.6L Duramax

Mahle

Mahle 2243935WR Engine Piston | 2010-2016 GM Sierra/Silverado 2500HD/35000HD 6.6L Duramax

SKU: MCI2243935WR
$110
$175.53
SAVE $65.53
Mahle 54597 1.05mm Thick Wave Stopper Head Gasket (Left) | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
IN STOCK
Mahle 54597 1.05mm Thick Wave Stopper Head Gasket (Left) | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Mahle

Mahle 54597 1.05mm Thick Wave Stopper Head Gasket (Left) | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: MCI54597
$183.51
PPE 118061403 Engine Oil Pan Gasket (18 Holes) | 2011-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax LML
PPE 118061403 Engine Oil Pan Gasket (18 Holes) | 2011-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax LML

PPE

PPE 118061403 Engine Oil Pan Gasket (18 Holes) | 2011-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax LML

SKU: PPE118061403
$14.39
$15.99
SAVE $1.60
Wehrli 100443 Black Anodized Billet Oil Fill Tube Cap | 2001-2026 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
IN STOCK
Wehrli 100443 Black Anodized Billet Oil Fill Tube Cap | 2001-2026 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Wehrli 100443 Black Anodized Billet Oil Fill Tube Cap | 2001-2026 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Wehrli 100443 Black Anodized Billet Oil Fill Tube Cap | 2001-2026 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Wehrli 100443 Black Anodized Billet Oil Fill Tube Cap | 2001-2026 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Wehrli Custom Fab

Wehrli 100443 Black Anodized Billet Oil Fill Tube Cap | 2001-2026 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: WCF100443
$51.41
PPE 110090053 Straight Valve Springs, Retainers, and Keepers Kit | 2001-2016 GM Silverado 2500HD/3500HD6.6L Duramax
PPE 110090053 Straight Valve Springs, Retainers, and Keepers Kit | 2001-2016 GM Silverado 2500HD/3500HD6.6L Duramax
PPE 110090053 Straight Valve Springs, Retainers, and Keepers Kit | 2001-2016 GM Silverado 2500HD/3500HD6.6L Duramax
PPE 110090053 Straight Valve Springs, Retainers, and Keepers Kit | 2001-2016 GM Silverado 2500HD/3500HD6.6L Duramax

PPE

PPE 110090053 Straight Valve Springs, Retainers, and Keepers Kit | 2001-2016 GM Silverado 2500HD/3500HD6.6L Duramax

SKU: PPE110090053
$539.99
$599.99
SAVE $60
Fleece FPE-HAR-MU-PT-11 Multiuse Sensor Pigtail 11 | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
IN STOCK
Fleece FPE-HAR-MU-PT-11 Multiuse Sensor Pigtail 11 | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Fleece FPE-HAR-MU-PT-11 Multiuse Sensor Pigtail 11 | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Fleece FPE-HAR-MU-PT-11 Multiuse Sensor Pigtail 11 | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Fleece Performance Products

Fleece FPE-HAR-MU-PT-11 Multiuse Sensor Pigtail 11 | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: FLCFPE-HAR-MU-PT-11
$18.99

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DIESEL TRUCK EXPERTS STANDING BY

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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