2011-2016 GM 2500HD/3500HD 6.6L LM 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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Victor Reinz 14-10117-01 Engine Cylinder Head Bolt Set | 2001-2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Victor Reinz 14-10117-01 Engine Cylinder Head Bolt Set | 2001-2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Victor Reinz

Victor Reinz 14-10117-01 Engine Cylinder Head Bolt Set | 2001-2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: VRZ14-10117-01
$71.94
Victor Reinz 71-13629-00 Exhaust Pipe Flange Gasket | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Victor Reinz 71-13629-00 Exhaust Pipe Flange Gasket | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Victor Reinz

Victor Reinz 71-13629-00 Exhaust Pipe Flange Gasket | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: VRZ71-13629-00
$5.01
Victor Reinz 61-36465-20 Engine Cylinder Head Gasket | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Victor Reinz 61-36465-20 Engine Cylinder Head Gasket | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Victor Reinz

Victor Reinz 61-36465-20 Engine Cylinder Head Gasket | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: VRZ61-36465-20
$83.60
Victor Reinz 61-36460-20 Engine Cylinder Head Gasket | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Victor Reinz 61-36460-20 Engine Cylinder Head Gasket | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Victor Reinz

Victor Reinz 61-36460-20 Engine Cylinder Head Gasket | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: VRZ61-36460-20
$80.17
PPE 518001000 Weld-On Billet Radiator Neck | Universal
PPE 518001000 Weld-On Billet Radiator Neck | Universal
PPE 518001000 Weld-On Billet Radiator Neck | Universal

PPE

PPE 518001000 Weld-On Billet Radiator Neck | Universal

SKU: PPE518001000
$22.49
PPE 119030100 Raw 304 Stainless Steel Coolant Tube (Pump to oil cooler) | 2001-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 119030100 Raw 304 Stainless Steel Coolant Tube (Pump to oil cooler) | 2001-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 119030100 Raw 304 Stainless Steel Coolant Tube (Pump to oil cooler) | 2001-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 119030100 Raw 304 Stainless Steel Coolant Tube (Pump to oil cooler) | 2001-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 119030100 Raw 304 Stainless Steel Coolant Tube (Pump to oil cooler) | 2001-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 119030100 Raw 304 Stainless Steel Coolant Tube (Pump to oil cooler) | 2001-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 119030100 Raw 304 Stainless Steel Coolant Tube (Pump to oil cooler) | 2001-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE119030100
$197.99
$219.99
PPE 114000551 Oil Filter Adapter Threaded 13/16 inch - 16 UNF | 2001-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 114000551 Oil Filter Adapter Threaded 13/16 inch - 16 UNF | 2001-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 114000551 Oil Filter Adapter Threaded 13/16 inch - 16 UNF | 2001-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE114000551
$8.99
Products IFG-JD66-12-220 High-Strength Head Studs | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Products IFG-JD66-12-220 High-Strength Head Studs | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Powerstroke Products

Products IFG-JD66-12-220 High-Strength Head Studs | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PWSIFG-JD66-12-220
$449
Industrial PDM-DMXHP Stage 2 Race Camshaft with Key | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Industrial PDM-DMXHP Stage 2 Race Camshaft with Key | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Industrial PDM-DMXHP Stage 2 Race Camshaft with Key | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Industrial PDM-DMXHP Stage 2 Race Camshaft with Key | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Industrial PDM-DMXHP Stage 2 Race Camshaft with Key | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Industrial Injection

Industrial PDM-DMXHP Stage 2 Race Camshaft with Key | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: IISPDM-DMXHP
$969.95
Fleece FPE-DMAX-OC-BLK Oil Cap Black | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Fleece FPE-DMAX-OC-BLK Oil Cap Black | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Fleece FPE-DMAX-OC-BLK Oil Cap Black | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Fleece Performance Products

Fleece FPE-DMAX-OC-BLK Oil Cap Black | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: FLCFPE-DMAX-OC-BLK
$39.99
Edge 98609 EAS Power Switch w/Starter Kit | Universal
Edge 98609 EAS Power Switch w/Starter Kit | Universal

Edge Products

Edge 98609 EAS Power Switch w/Starter Kit | Universal

SKU: EDG98609
$215.95
Comp Cams 701-32 Valve Spring Steel Retainers | 2011-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Comp Cams 701-32 Valve Spring Steel Retainers | 2011-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Comp Cams

Comp Cams 701-32 Valve Spring Steel Retainers | 2011-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

SKU: CPC701-32
$163.95
Carrillo DR7022 High-Performance Piston Set | 2001-2018 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Carrillo DR7022 High-Performance Piston Set | 2001-2018 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Carrillo

Carrillo DR7022 High-Performance Piston Set | 2001-2018 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: CRLDR7022SET
$3,284.40
Cometic C5883-075 MLS Cylinder Head Gasket - .075 inch Bore 4.100 inch LHS | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Cometic C5883-075 MLS Cylinder Head Gasket - .075 inch Bore 4.100 inch LHS | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Cometic

Cometic C5883-075 MLS Cylinder Head Gasket - .075 inch Bore 4.100 inch LHS | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: COMC5883-075
$195.29
$216.98
Cometic C5883-051 MLS Cylinder Head Gasket - .051 inch Bore 4.100 inch LHS | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Cometic C5883-051 MLS Cylinder Head Gasket - .051 inch Bore 4.100 inch LHS | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Cometic

Cometic C5883-051 MLS Cylinder Head Gasket - .051 inch Bore 4.100 inch LHS | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: COMC5883-051
$147.30
Cometic C5883-056 MLS Cylinder Head Gasket - .056" inch Bore 4.100" inch LHS | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Cometic C5883-056 MLS Cylinder Head Gasket - .056" inch Bore 4.100" inch LHS | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Cometic

Cometic C5883-056 MLS Cylinder Head Gasket - .056" inch Bore 4.100" inch LHS | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: COMC5883-056
$195.30
$216.98
Cometic C5883-060 MLS Cylinder Head Gasket - .060" inch Bore 4.100" inch LHS | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Cometic C5883-060 MLS Cylinder Head Gasket - .060" inch Bore 4.100" inch LHS | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Cometic

Cometic C5883-060 MLS Cylinder Head Gasket - .060" inch Bore 4.100" inch LHS | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: COMC5883-060
$195.30
$216.98
Cometic C5883-040 MLS Cylinder Head Gasket - .040 inch Bore 4.100 inch LHS | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Cometic C5883-040 MLS Cylinder Head Gasket - .040 inch Bore 4.100 inch LHS | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Cometic

Cometic C5883-040 MLS Cylinder Head Gasket - .040 inch Bore 4.100 inch LHS | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: COMC5883-040
$147.30
Cometic C5882-075 MLS Cylinder Head Gasket - .075" inch Bore 4.100" inch RHS | 2001-2016 GM Silverado/Sierra 2500HD & 2007-2016 3500HD Duramax
Cometic C5882-075 MLS Cylinder Head Gasket - .075" inch Bore 4.100" inch RHS | 2001-2016 GM Silverado/Sierra 2500HD & 2007-2016 3500HD Duramax

Cometic

Cometic C5882-075 MLS Cylinder Head Gasket - .075" inch Bore 4.100" inch RHS | 2001-2016 GM Silverado/Sierra 2500HD & 2007-2016 3500HD Duramax

SKU: COMC5882-075
$195.30
$216.98
Cometic C5882-060 MLS Cylinder Head Gasket - .060 inch Bore 4.100 inch RHS | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Cometic C5882-060 MLS Cylinder Head Gasket - .060 inch Bore 4.100 inch RHS | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Cometic

Cometic C5882-060 MLS Cylinder Head Gasket - .060 inch Bore 4.100 inch RHS | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: COMC5882-060
$195.30
Cometic C5882-051 MLS Cylinder Head Gasket - .051" inch Bore 4.100" inch RHS | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Cometic C5882-051 MLS Cylinder Head Gasket - .051" inch Bore 4.100" inch RHS | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Cometic

Cometic C5882-051 MLS Cylinder Head Gasket - .051" inch Bore 4.100" inch RHS | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: COMC5882-051
$147.30
$163.65
Cometic C5882-056 MLS Cylinder Head Gasket - .056 inch Bore 4.100 inch RHS | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Cometic C5882-056 MLS Cylinder Head Gasket - .056 inch Bore 4.100 inch RHS | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Cometic

Cometic C5882-056 MLS Cylinder Head Gasket - .056 inch Bore 4.100 inch RHS | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: COMC5882-056
$195.30
Cometic C5882-045 MLS Cylinder Head Gasket - .045 inch Bore 4.100 inch RHS | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Cometic C5882-045 MLS Cylinder Head Gasket - .045 inch Bore 4.100 inch RHS | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Cometic

Cometic C5882-045 MLS Cylinder Head Gasket - .045 inch Bore 4.100 inch RHS | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: COMC5882-045
$147.30
Cometic C5882-040 MLS Cylinder Head Gasket -.040" inch Bore 4.100 inch RHS | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Cometic C5882-040 MLS Cylinder Head Gasket -.040" inch Bore 4.100 inch RHS | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Cometic

Cometic C5882-040 MLS Cylinder Head Gasket -.040" inch Bore 4.100 inch RHS | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: COMC5882-040
$147.28
$163.65

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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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