2007.5-2010 GM 2500HD/3500HD 6.6L LMM Duramax Engine & Performance

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2007.5-2010 GM 2500HD/3500HD 6.6L LMM Duramax Parts and Accessories

Crate Engines

Gaskets

Glow Plugs

Head Studs & Main Studs

Heads & Valve Train

Motor Mounts

Oil Pans

Radiators & Cooling Upgrades

Rebuild Kits & Internal Parts

Rods/Pistons/Cams & More

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The GM 2500/3500's equipped with a 6.6L Duramax LMM under the hood already come 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 situation. 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 even help promote component longevity so you can enjoy 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 2007.5-2010 GM 6.6L Duramax LMM Transmission Upgrades to compliment the increase in power you're throwing down! GM Duramax Fitments: 2007, 2008, 2009, 2010 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>2007.5-2010 6.6L LMM

Tuners & Monitors
Cooling Upgrades
Head Studs & Main Studs
Rods, Pistons & Cams
Heads & Valve Train

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2007.5-2010 GM 2500HD/3500HD 6.6L LMM Duramax Engine & Performance

Crate Engines

Gaskets

Glow Plugs

Head Studs & Main Studs

Heads & Valve Train

Motor Mounts

Oil Pans

Radiators & Cooling Upgrades

Rebuild Kits & Internal Parts

Rods/Pistons/Cams & More

Loading products...

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

Fleece FPE-HAR-DMAX-RP-0610 Rail Pressure Sensor Harness | 2006-2010 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax

BullyDog 40470 BDX Performance Programmer Tuner with Display | 2013-2025 Ford Powerstroke/2013-2021 RAM Cummins/2006–2010 GM Duramax

PPE 118034350 Head Stud Kit - PPE-288 High Yield | 2001-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax

DFC Diesel TH6607510LMMSOALBHD Tow Haul HD Series Speed Of Air Long Block (Standard/Auto) | 2007.5-2010 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LMM

DFC Diesel TH6607510LMMSOALB Tow Haul Series Speed Of Air Long Block (Standard/Auto) | 2007.5-2010 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LMM

DFC Diesel SS6607510LMMTKSOALBCC Street Series Speed Of Air Long Block - Callies Crankshaft (Standard/Auto) | 2007.5-2010 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LMM TOPKICK

DFC Diesel SS6607510LMMSOALBCC Street Series Speed Of Air Long Block - Callies Crankshaft (Standard/Auto) | 2007.5-2010 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LMM

DFC Diesel SS6607510LMMTKSOALB Street Series Speed Of Air Long Block (Standard/Auto) | 2007.5-2010 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LMM TOPKICK

DFC Diesel SS6607510LMMSOALB Street Series Speed Of Air Long Block (Standard/Auto) | 2007.5-2010 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LMM

Wehrli 100131 X PPE High-Capacity Aluminum Oil Pan | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Wagler C6686-2 Alternate Fire Camshaft | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Wagler C6686-1 Alternate Fire Camshaft | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Wagler C6618 Billet Rocker Bridges | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Mahle 54581/54584 Victor Reinz 1.00mm Thick Left and Right Head Gasket | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE 119025200 Upper & Lower Coolant Hose Kit - Orange | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE 119024200 Upper & Lower Coolant Hose Kit - Yellow | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE 118030800 Connecting Rods | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE 116454075 Coolant Overflow Tank | 2007.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM

PPE 114051100 Dry Sump 5 Stage Steel Gear Oil Pump | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Merchant 97312341 Upper Valve Cover Gasket | 2004.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Merchant 930029875 De-Lipped Motorsport Piston Kit | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Industrial PDM-DMXAFS1 Alternate Fire Billet Race Stage 1 Camshaft with Key | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Industrial PDM-362.040injections Forged .040 Mahle Race Pistons Set | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

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

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ORDERS OVER $70

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