2001-2004 GM 2500HD/3500HD 6.6L LB Duramax Engine & Performance
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
Loading products...
Edge 21500-3 Juice with Attitude CTS3 | 2001-2004 Silverado/Sierra 2500HD/3500HD 6.6L LB7
- Price
- $1,158.95
BD Diesel 1057735 Throttle Sensitivity Booster | 2001-2005 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $277.95
ARP 900-0750 4.075 Bore Ring Compressor | 2001-2016 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $97.13
ARP 129-2503 Harmonic Balancer Bolt Kit | 2001-2019 Silverado/Sierra 2500HD/3500HD 6.6L
- Sale price
- $23.92
- Regular price
- $45.62
ARP 100-7534 Hex Head Valve Cover Bolt Kit | 2004.5-2010 Silverado/Sierra 2500HD/3500HD 6.6L
- Sale price
- $105.53
- Regular price
- $201.29
Merchant 97321295 Lower Valve Cover Gasket | 2004.5-2005 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $76.72
Merchant 10000 High Performance Motor Mounts | 2001-2010 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $422.63
PPE 114052001 14mm Billet Hardened Stainless Steel Magnetic Drain Plug for OEM & PPE Engine Oil Pans | 2001-2016 Silverado/Sierra 2500HD/3500HD
- Price
- $17.99
Mahle 54580 Left Side Head Gasket | 2001-2010 Silverado/Sierra 2500HD/3500HD 6.6L
- Sale price
- $88.86
- Regular price
- $188.38
Mahle 54580 Right Hand Side Head Gasket Grade A | 2001-2016 Silverado/Sierra 2500HD/3500HD 6.6L
- Sale price
- $88.86
- Regular price
- $185.02
Wagler C6641 Billet Main Caps | 2001-2016 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $750
Wagler C6658 Street Girdle | 2001-2010 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $850
Loading products...
Shop This Make By
The 6.6L Duramax LB7 under the hood of your 2001-2004 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 2001-2004 GM 6.6L Duramax LLY Transmission Upgrades to compliment the increase in power you're throwing down! GM Duramax Fitments: 2001, 2002, 2003, 2004 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>2001-2004 6.6L LB7
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.
- Choosing a selection results in a full page refresh.
!