2003 GMC Sierra 1500 HD Exhaust Upgrade Parts
45 parts verified to fit your 2003 GMC Sierra 1500 HD for a complete exhaust upgrade. A moderate DIY project — estimated 2-5 hours.
Cat-Back Exhaust
(1)primary
Headers
(13)primary
Victor Reinz
MAHLE Original Buick Allure 09-08 Exhaust Manifold Set
$20.19
Fel-Pro
Fel-Pro 09-13 Chevrolet Silverado 1500/09-13 Corvette/12-15 Camaro Exhaust Manifold Gasket Set
$15.31
Fel-Pro
Fel-Pro Chevrolet Silverado 1500 MSB 92467 Exhaust Manifold Gasket Set Bolts Included
$67.34
BD Diesel
BD Diesel Passenger Side Exhaust Manifold - 02-13 Chevy Silverado 1500 & GMC Sierra 1500 V8
$328.17
BBK
BBK 99-04 GM Truck SUV 6.0 Shorty Tuned Length Exhaust Headers - 1-3/4 Silver Ceramic
$598.26
Gibson
Gibson 02-06 Cadillac Escalade Base 6.0L 1-5/8in 16 Gauge Performance Header - Ceramic Coated
$861.53
JBA
JBA 03-06 GM Truck 6.0L LS w/o EGR 1-5/8in Primary Ti Ctd Cat4Ward Header
$845.03
BBK
BBK 99-04 GM Truck SUV 6.0 Shorty Tuned Length Exhaust Headers - 1-3/4 Titanium Ceramic
$524.79
Mufflers
(31)primary
Magnaflow
MagnaFlow Conv DF 03-08 Chevy/GMC PS rr OEM
$543.00
Fel-Pro
Fel-Pro Chevrolet Silverado 2500 HD Exhaust Pipe Flange Gasket
$6.87
Magnaflow
MagnaFlow Conv DF 00-06 Chevy/GMC Driver Side
$684.00
Magnaflow
MagnaFlow Conv Univ 2.50inch
$178.00
Magnaflow
MagnaFlow Conv Univ 3in Inlet/Outlet Center/Center Round 9in Body L x 5.125in W x 13in Overall L
$178.00
Magnaflow
MagnaFlow Conv Universal 2.50 OEM
$194.00
Cometic Gasket
Cometic GM Gen-3/4 Small Block V8 MLS Exhaust Manifold Gasket Set
$53.75
Magnaflow
MagnaFlow Conv Universal 3 inch
$523.00
Exhaust Upgrade for Other GMC Sierra 1500 HD Years
Other Jobs for Your 2003 GMC Sierra 1500 HD
Frequently Asked Questions
What parts do I need for a exhaust upgrade on my 2003 GMC Sierra 1500 HD?
A complete exhaust upgrade on the 2003 GMC Sierra 1500 HD typically requires cat-back exhaust, headers, mufflers. All parts shown on this page are verified to fit your specific vehicle.
How long does a exhaust upgrade take on a 2003 GMC Sierra 1500 HD?
A exhaust upgrade typically takes 2-5 hours and is rated as moderate difficulty. Actual time may vary depending on your experience and the specific parts being replaced.
Can I do a exhaust upgrade myself?
A exhaust upgrade is a moderate DIY project. If you have some mechanical experience and the right tools, you can handle it. Otherwise, consider having a professional do the work.
Are these parts guaranteed to fit my 2003 GMC Sierra 1500 HD?
Yes, all parts on this page are verified to fit the 2003 GMC Sierra 1500 HD using VCDB fitment data from manufacturers. Our fitment information is cross-referenced with industry-standard vehicle databases to ensure accuracy.
What brands make exhaust upgrade parts for the 2003 GMC Sierra 1500 HD?
We carry exhaust upgrade parts from trusted brands including Gibson, Victor Reinz, Fel-Pro, BD Diesel, and BBK. Filter by brand to find your preferred manufacturer.
How much does a exhaust upgrade cost for a 2003 GMC Sierra 1500 HD?
The cost of a exhaust upgrade for the 2003 GMC Sierra 1500 HD depends on the parts and brands you choose. Browse the parts on this page to see current pricing. Doing the work yourself saves significantly on labor costs.