78+ 2003 GMC Sierra 2500 HD Mufflers & Resonators Base Parts - Page 2

Base · Mufflers & Resonators (77 products)

Exact-fit parts for the 2003 GMC Sierra 2500 HD Base.

AP Exhaust

Part # 700488

Fits with Conditions

Direct Fit Muffler - MSL Maximum

$104.84

Fel-Pro

Part # ES75106

Confirmed Fit

Fel-Pro Chevrolet Silverado 1500 ES 75106 Exhaust Flange Stud and Nut

$30.30

Magnaflow

Part # 60021

Confirmed Fit

MagnaFlow Conv Univ 4.00inch O/C Diesel

$396.00

Magnaflow

Part # 4551006

Confirmed Fit

MagnaFlow Conv DF 2007 GMC Sierra 2500 HD Classic 6.0/ 8.1/ 3500 Classic 6.0

$1572.00

Magnaflow

Part # 15399

Confirmed Fit

MagnaFlow Down-Pipe 06-07 GM Diesel 6.6L

$215.55

Magnaflow

Part # 49642

Confirmed Fit

MagnaFlow Conv DF 03-08 Chevy/GMC PS rr OEM

$591.00

Diamond Eye TURBO-DIRECT 3in AL CHEVY LB7 DURAMAX 01-04 5 BTWN TURBO & F PIPE TRANS DIPSTICK MOD REQ

Diamond Eye Performance

Part # 321055

Confirmed Fit

Diamond Eye TURBO-DIRECT 3in AL CHEVY LB7 DURAMAX 01-04 5 BTWN TURBO & F PIPE TRANS DIPSTICK MOD REQ

$487.95

Magnaflow

Part # 52493

Confirmed Fit

Magnaflow Conv DF 2001-2006 Sierra HD V8 6.0L Passenger Side

$487.00

Magnaflow

Part # 99209HM

Confirmed Fit

MagnaFlow Conv Univ 3in Inlet/Outlet Center/Center Round 9in Body L x 5.125in W x 13in Overall L

$194.00

Magnaflow

Part # 4551479

Confirmed Fit

Magnaflow 03-06 Chevrolet Silverado 2500 HD 6.0L Direct Fit Converter

$1520.00

Magnaflow

Part # 60110

Confirmed Fit

MagnaFlow Conv Universal 3.50 inch C/C Diesel

$523.00

Wehrli

Part # WCF100590

Confirmed Fit

Wehrli 01-04 Chevrolet 6.6L Duramax LB7 2in Stainless Up Pipe Kit w/Gaskets - Single Turbo

$654.34

MAHLE Original Chevrolet Silverado 2500 Hd 04 Exhaust Gas Recirculation Valve Gasket

Victor Reinz

Part # F31902

Confirmed Fit

MAHLE Original Chevrolet Silverado 2500 Hd 04 Exhaust Gas Recirculation Valve Gasket

$18.80

Corsa 1999-2006 Universal Stainless Steel Twin 4.0in Black PVD Pro-Series Tip

CORSA Performance

Part # 14031BLK

Confirmed Fit

Corsa 1999-2006 Universal Stainless Steel Twin 4.0in Black PVD Pro-Series Tip

$390.14

BD Diesel

Part # 1043803

Confirmed Fit

BD Diesel 2001-2004 Chevy Duramax LB7 6.6L Up-Pipe Only for Passenger Side

$326.80

Magnaflow

Part # 15463

Confirmed Fit

MagnaFlow Univ TP Assy 01-03 GM Diesel

$174.66

MAHLE Original Buick Lucerne 11-06 Exhaust Gas Recirculation Valve Gasket

Victor Reinz

Part # G31620

Confirmed Fit

MAHLE Original Buick Lucerne 11-06 Exhaust Gas Recirculation Valve Gasket

$15.48

Corsa Chevrolet Duramax Diesel 6.2L Muffler

CORSA Performance

Part # 8004000

Confirmed Fit

Corsa Chevrolet Duramax Diesel 6.2L Muffler

$583.68

Magnaflow

Part # 23781

Confirmed Fit

MagnaFlow Conv DF 05 Silverado 2500HD 6.0L

$1176.00

Magnaflow

Part # 49006

Confirmed Fit

MagnaFlow Conv DF 05 Silverado 2500HD 6.0L

$1281.00

Frequently Asked Questions

Do these parts fit my 2003 GMC Sierra 2500 HD Base?

This page groups parts listed for the 2003 GMC Sierra 2500 HD Base. Some products fit every trim, while others depend on submodel, engine, drivetrain, or brake package. Use your trim in My Garage or the product page fitment check to confirm exact fit.

What mufflers & resonators options are available for my 2003 GMC Sierra 2500 HD Base?

We offer a wide selection of mufflers & resonators parts for the 2003 GMC Sierra 2500 HD Base. This page narrows the catalog to the year, make, and model; use your trim on product pages to confirm exact fit when a part only fits certain submodels.

What brands make parts for the 2003 GMC Sierra 2500 HD Base?

We carry parts from trusted brands including Magnaflow, Victor Reinz, Wehrli, Fel-Pro, and Walker Exhaust, plus many more. Filter by brand to find your preferred manufacturer.

How fast do 2003 GMC Sierra 2500 HD Base parts ship?

Most in-stock items ship within 1-2 business days. Shipping rates are calculated at checkout based on your location.

What warranty do your 2003 GMC Sierra 2500 HD Base parts come with?

Warranty coverage varies by manufacturer but typically ranges from 1 year to lifetime. Each product page includes specific warranty information from the manufacturer.

2003 GMC Sierra 2500 HD(5,164 parts)

2003 GMC Sierra 2500 HD(5,164 parts)

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Other GMC Sierra 2500 HD Years

Base · Mufflers & Resonators (77 products)

Direct Fit Muffler - MSL Maximum

Fel-Pro Chevrolet Silverado 1500 ES 75106 Exhaust Flange Stud and Nut

MagnaFlow Conv Univ 4.00inch O/C Diesel

MagnaFlow Conv DF 2007 GMC Sierra 2500 HD Classic 6.0/ 8.1/ 3500 Classic 6.0

MagnaFlow Down-Pipe 06-07 GM Diesel 6.6L

MagnaFlow Conv DF 03-08 Chevy/GMC PS rr OEM

Diamond Eye TURBO-DIRECT 3in AL CHEVY LB7 DURAMAX 01-04 5 BTWN TURBO & F PIPE TRANS DIPSTICK MOD REQ

Magnaflow Conv DF 2001-2006 Sierra HD V8 6.0L Passenger Side

MagnaFlow Conv Univ 3in Inlet/Outlet Center/Center Round 9in Body L x 5.125in W x 13in Overall L

Magnaflow 03-06 Chevrolet Silverado 2500 HD 6.0L Direct Fit Converter

MagnaFlow Conv Universal 3.50 inch C/C Diesel

Wehrli 01-04 Chevrolet 6.6L Duramax LB7 2in Stainless Up Pipe Kit w/Gaskets - Single Turbo

MAHLE Original Chevrolet Silverado 2500 Hd 04 Exhaust Gas Recirculation Valve Gasket

Corsa 1999-2006 Universal Stainless Steel Twin 4.0in Black PVD Pro-Series Tip

BD Diesel 2001-2004 Chevy Duramax LB7 6.6L Up-Pipe Only for Passenger Side

MagnaFlow Univ TP Assy 01-03 GM Diesel

MAHLE Original Buick Lucerne 11-06 Exhaust Gas Recirculation Valve Gasket

Corsa Chevrolet Duramax Diesel 6.2L Muffler

MagnaFlow Conv DF 05 Silverado 2500HD 6.0L

MagnaFlow Conv DF 05 Silverado 2500HD 6.0L

Frequently Asked Questions

Do these parts fit my 2003 GMC Sierra 2500 HD Base?

What mufflers & resonators options are available for my 2003 GMC Sierra 2500 HD Base?

What brands make parts for the 2003 GMC Sierra 2500 HD Base?

How fast do 2003 GMC Sierra 2500 HD Base parts ship?

What warranty do your 2003 GMC Sierra 2500 HD Base parts come with?