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...
ARP 230-4202 Custom Age 625+ Head Stud Kit | 2001-2016 Silverado/Sierra 2500HD/3500HD 6.6L
- Sale price
- $1,727.31
- Regular price
- $3,294.60
ARP100-7533 8MM 12pt Valve Cover Bolt Kit | 2004.5-2016 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $116.51
Mahle SH-1999S SH-1999S Cam Shaft Bearing Set | 2001-2013 Silverado/Sierra 2500HD/3500HD 6.6L
- Sale price
- $80
- Regular price
- $245.57
BD Diesel 1036600 High Idle Control Kit | 2001-2004 Silverado/Sierra 2500HD/3500HD 6.6L LB7
- Price
- $42.95
PPE 119020010 Engine to CAB Coolant Hose | 2001-2010 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $11.69
Fleece FPE-HAR-DMAX-CPS-0416 Crankshaft Position Sensor Pigtail | 2004-2016 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $21.99
PPE 168030150 Engine Mount Kit 50 Hardness | 2001-2010 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $269.99
PPE 114000565 Oil Filter - Micropure Extreme Performance with Torqstop Technology | 2001-2019 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $35.99
Merchant 10010 Air Bleeder Screw | 2001-2016 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $10.92
EFI Live LIC-FS2-VIN Tuning FlashScan V2 VIN License | Semi-Universal
- Price
- $125
Edge 98617 EAS Competition Kit | Universal
- Price
- $491.95
Fleece FPE-DMAX-OC-RED Oil Cap Red | 2001-2016 Silverado/Sierra 2500HD/3500HD 6.6L
- Price
- $39.99
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.
!