Questions? Call Us:631-982-0042
M-F 8AM-4PM ET
Trusted Since 1957
$61.95
DFC
$44.48
Nitrous Express
$334.62
Putco
$33.64
Nitrous Express
$78.27
Diode Dynamics
$71.63
Wehrli
$3666.56
PowerStop
$255.59
ARB
$301.00
Timbren
$398.07
Nitrous Express
$103.41
$514.99
$34.38
Banks Power
$69.00
$0.32
Tuff Country
$63.65
DFC
$83.01
Yukon Gear & Axle
$613.89
Wilwood
$3206.13
AutoMeter
$277.31
Yes, all parts displayed on this page are verified to fit the 2003 GMC Sierra 3500 using VCDB fitment data. Our fitment information comes directly from manufacturers and is cross-referenced with industry-standard vehicle databases.
The most popular categories for the 2003 GMC Sierra 3500 include engine, exterior, cold-air-intakes, and suspension. Browse our full selection to find the exact parts you need for your vehicle.
We carry parts from trusted brands including Wehrli, Dee Zee, Yukon Gear & Axle, Clevite, and Cometic Gasket, plus many more. Filter by brand to find your preferred manufacturer.
Most in-stock items ship within 1-2 business days. Shipping rates are calculated at checkout based on your location.
Warranty coverage varies by manufacturer but typically ranges from 1 year to lifetime. Each product page includes specific warranty information from the manufacturer.