2004.5-2005 GM 2500HD/3500HD 6.6L LL Duramax Engine & Performance
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PPE 114028000 Tubing Kit for PPE Crankcase Breather Kit | 2004-2010 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $35.99
PPE 119021007 EGR to CAB Coolant Hose | 2004.5-2007 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $12.14
Merchant 10549 Water Pump Kit with Cover | 2001-2005 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $249.33
Wehrli 100025 Coolant Plug for Engine Cover | 2001-2016 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $23.28
PPE 119020092 2in OEM Coolant Hose Drain 1/4in Bung | Universal
- Price
- $26.99
PPE 114003000 Billet Aluminum Engine Oil Filler Cap | 2001-2016 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $31.49
Mahle MS-2218P Main Bearing Set | 2001-2016 Silverado/Sierra 2500HD/3500HD 6.6L
- Sale price
- $85.41
- Regular price
- $272
PPE 119020009 Stainless Steel Heater Hose Connector | 1999-2014 Silverado/Sierra 2500HD/3500HD
- Price
- $22.49
SoCal Diesel DSP5LLY DSP5 Switch | 2004.5-2005 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $55
PPE 119022100 Blue Upper & Lower Coolant Hose Kit | 2001-2005 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $269.99
PPE 149000105 Firewall Heat Shield/Insulator | 2001-2007 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $269.99
PPE 114052020 Black Deep Engine Oil Pan | 2001-2010 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $278.99
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Shop This Make By
The 6.6L Duramax LLY under the hood of your 2004.5-2005 GM Sierra/Silverado 2500/3500 may be one of the best and most efficient engines out there, but even the toughest trucks have some power and performance waiting to be unleashed through various performance modifications. Here at Alligator Performance, we carry a 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 2004.5-2005 GM 6.6L Duramax LLY Transmission Upgrades to compliment the increase in power you're throwing down! GM Duramax Fitments: 2004, 2005 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>2004.5-2005 6.6L LLY
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.
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