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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Merchant 10543 Water Pump Kit | 2006-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Merchant 10543 Water Pump Kit | 2006-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Merchant 10543 Water Pump Kit | 2006-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Merchant 10543 Water Pump Kit | 2006-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Merchant 10543 Water Pump Kit | 2006-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Merchant Automotive

Merchant 10543 Water Pump Kit | 2006-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: MAT10543
$279.75
PPE 114052120 High-Capacity Black Aluminum Deep Engine Oil Pan | 2011-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
IN STOCK
PPE 114052120 High-Capacity Black Aluminum Deep Engine Oil Pan | 2011-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
PPE 114052120 High-Capacity Black Aluminum Deep Engine Oil Pan | 2011-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
PPE 114052120 High-Capacity Black Aluminum Deep Engine Oil Pan | 2011-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

PPE

PPE 114052120 High-Capacity Black Aluminum Deep Engine Oil Pan | 2011-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: PPE114052120
$305.99
Mishimoto MMTS-CHV-01DH High Temperature Thermostat | 2001-2016 Silverado 6.6L Duramax
IN STOCK
Mishimoto MMTS-CHV-01DH High Temperature Thermostat | 2001-2016 Silverado 6.6L Duramax

Mishimoto

Mishimoto MMTS-CHV-01DH High Temperature Thermostat | 2001-2016 Silverado 6.6L Duramax

SKU: MIMMMTS-CHV-01DH
$99.95
PPE 119022300 Upper & Lower Coolant Hose Kit | 2011-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
PPE 119022300 Upper & Lower Coolant Hose Kit | 2011-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

PPE

PPE 119022300 Upper & Lower Coolant Hose Kit | 2011-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: PPE119022300
$269.99
Fleece FPE-LML-RES Resonator Delete Plate | 2011-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
IN STOCK
Fleece FPE-LML-RES Resonator Delete Plate | 2011-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Fleece Performance Products

Fleece FPE-LML-RES Resonator Delete Plate | 2011-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: FLCFPE-LML-RES
$39.99
$41.99
SAVE $2
PPE 114003000 Billet Aluminum Engine Oil Filler Cap | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
IN STOCK
PPE 114003000 Billet Aluminum Engine Oil Filler Cap | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 114003000 Billet Aluminum Engine Oil Filler Cap | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 114003000 Billet Aluminum Engine Oil Filler Cap | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 114003000 Billet Aluminum Engine Oil Filler Cap | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE114003000
$31.49
Wehrli 100025 Coolant Plug for Engine Cover | 2001-2016 GM 2500HD/3500HD 6.6L Duramax
Wehrli 100025 Coolant Plug for Engine Cover | 2001-2016 GM 2500HD/3500HD 6.6L Duramax
Wehrli 100025 Coolant Plug for Engine Cover | 2001-2016 GM 2500HD/3500HD 6.6L Duramax

Wehrli Custom Fab

Wehrli 100025 Coolant Plug for Engine Cover | 2001-2016 GM 2500HD/3500HD 6.6L Duramax

SKU: WCF100025
$24.25
Merchant 9G Glow Plug | 2006-2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Merchant 9G Glow Plug | 2006-2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Merchant Automotive

Merchant 9G Glow Plug | 2006-2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: MAT9G
$29.72
EFI Live FS3-GM-DC Flashscan V3 | 2001-2016 GMC & RAM Applications
EFI Live FS3-GM-DC Flashscan V3 | 2001-2016 GMC & RAM Applications

EFI Live

EFI Live FS3-GM-DC Flashscan V3 | 2001-2016 GMC & RAM Applications

SKU: EFIFS3-GM-DC
$1,891.27
ARP 400-7533 12pt Valve Cover Bolt Kit | 2004-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
IN STOCK
ARP 400-7533 12pt Valve Cover Bolt Kit | 2004-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

ARP

ARP 400-7533 12pt Valve Cover Bolt Kit | 2004-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: ARP400-7533
$164.12
Edge 28603 CTS3 Pillar Display Mount | 2007.5-2014 GM Sierra/Silverado 2500HD/3500HD
IN STOCK
Edge 28603 CTS3 Pillar Display Mount | 2007.5-2014 GM Sierra/Silverado 2500HD/3500HD
Edge 28603 CTS3 Pillar Display Mount | 2007.5-2014 GM Sierra/Silverado 2500HD/3500HD
Edge 28603 CTS3 Pillar Display Mount | 2007.5-2014 GM Sierra/Silverado 2500HD/3500HD

Edge Products

Edge 28603 CTS3 Pillar Display Mount | 2007.5-2014 GM Sierra/Silverado 2500HD/3500HD

SKU: EDG28603
$76.45
$86.95
SAVE $10.50
PPE 119020092 2" inch OEM Coolant Hose Drain 1/4 inch Bung | Universal
IN STOCK
PPE 119020092 2" inch OEM Coolant Hose Drain 1/4 inch Bung | Universal
PPE 119020092 2" inch OEM Coolant Hose Drain 1/4 inch Bung | Universal

PPE

PPE 119020092 2" inch OEM Coolant Hose Drain 1/4 inch Bung | Universal

SKU: PPE119020092
$26.99
$29.99
SAVE $3
Edge 85401-201 Evolution CTS3 50 State Legal Programmer | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
IN STOCK
Edge 85401-201 Evolution CTS3 50 State Legal Programmer | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Edge 85401-201 Evolution CTS3 50 State Legal Programmer | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Edge 85401-201 Evolution CTS3 50 State Legal Programmer | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Edge 85401-201 Evolution CTS3 50 State Legal Programmer | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Edge Products

Edge 85401-201 Evolution CTS3 50 State Legal Programmer | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: EDG85401-201
$849.95
$956.95
SAVE $107
Wagler C6664 Push Rods | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Wagler C6664 Push Rods | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Wagler Competition Products

Wagler C6664 Push Rods | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: WCPC6664
$442.08
PPE 118034250 Harmonic Balancer Bolt 12 Point | 2001-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 118034250 Harmonic Balancer Bolt 12 Point | 2001-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 118034250 Harmonic Balancer Bolt 12 Point | 2001-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 118034250 Harmonic Balancer Bolt 12 Point | 2001-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE118034250
$26.99
PPE 114000559 Engine Oil Filter Socket | 2001-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
IN STOCK
PPE 114000559 Engine Oil Filter Socket | 2001-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 114000559 Engine Oil Filter Socket | 2001-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 114000559 Engine Oil Filter Socket | 2001-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 114000559 Engine Oil Filter Socket | 2001-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE114000559
$35.99
Mahle MS2218P Main Bearing Set | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
IN STOCK
Mahle MS2218P Main Bearing Set | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Mahle

Mahle MS2218P Main Bearing Set | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: MCIMS2218P
$88.44
$110.31
SAVE $21.87
Edge 98617 EAS Competition Kit | Universal
IN STOCK
Edge 98617 EAS Competition Kit | Universal
Edge 98617 EAS Competition Kit | Universal

Edge Products

Edge 98617 EAS Competition Kit | Universal

SKU: EDG98617
$584.95
$658.95
SAVE $74
Sinister SD-WWP-06 Welded Water Pump | 2006-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Sinister SD-WWP-06 Welded Water Pump | 2006-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Sinister SD-WWP-06 Welded Water Pump | 2006-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Sinister SD-WWP-06 Welded Water Pump | 2006-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Sinister SD-WWP-06 Welded Water Pump | 2006-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Sinister Diesel

Sinister SD-WWP-06 Welded Water Pump | 2006-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: SINSDWWP06
$319.99
PPE 118034300 Head Stud Kit | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
IN STOCK
PPE 118034300 Head Stud Kit | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 118034300 Head Stud Kit | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 118034300 Head Stud Kit | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 118034300 Head Stud Kit | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE118034300
$539.99
PPE 114052100 High-Capacity Raw Aluminum Deep Engine Oil Pan | 2011-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
IN STOCK
PPE 114052100 High-Capacity Raw Aluminum Deep Engine Oil Pan | 2011-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
PPE 114052100 High-Capacity Raw Aluminum Deep Engine Oil Pan | 2011-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
PPE 114052100 High-Capacity Raw Aluminum Deep Engine Oil Pan | 2011-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

PPE

PPE 114052100 High-Capacity Raw Aluminum Deep Engine Oil Pan | 2011-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: PPE114052100
$287.99
Fleece FPE-DMAX-CBOP Billet Coolant Block Off Plate | 2001-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
IN STOCK
Fleece FPE-DMAX-CBOP Billet Coolant Block Off Plate | 2001-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Fleece FPE-DMAX-CBOP Billet Coolant Block Off Plate | 2001-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Fleece FPE-DMAX-CBOP Billet Coolant Block Off Plate | 2001-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Fleece Performance Products

Fleece FPE-DMAX-CBOP Billet Coolant Block Off Plate | 2001-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: FLCFPE-DMAX-CBOP
$55
$58.79
SAVE $3.79
HP Tuners M04-000-00 Computer Programmers | Universal
IN STOCK
HP Tuners M04-000-00 Computer Programmers | Universal
HP Tuners M04-000-00 Computer Programmers | Universal
HP Tuners M04-000-00 Computer Programmers | Universal
HP Tuners M04-000-00 Computer Programmers | Universal
HP Tuners M04-000-00 Computer Programmers | Universal

HP Tuners

HP Tuners M04-000-00 Computer Programmers | Universal

SKU: HPTM04-000-00
$399.99
Gator Fasteners HSK66 Head Stud Kit | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
IN STOCK
Gator Fasteners HSK66 Head Stud Kit | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Gator Fasteners HSK66 Head Stud Kit | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Gator Fasteners HSK66 Head Stud Kit | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Gator Fasteners HSK66 Head Stud Kit | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Gator Fasteners

Gator Fasteners HSK66 Head Stud Kit | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: GTFHSK66
$549.99
$595.99
SAVE $46

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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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