30+ 2003 GMC Sierra 2500 HD Headers & Manifolds Parts

Headers & Manifolds (30 products)

aFe 01-04 GM V8-6.6L LB7 Twisted Steel Manifold w/ Up Pipe

aFe

Part # 48-34009-PK

Fits All Trims

aFe 01-04 GM V8-6.6L LB7 Twisted Steel Manifold w/ Up Pipe

$1492.77

JBA 01-03 Gm Truck 8.1L BBC w/o EGR/A.I.R. 1-3/4in Primary Raw 409SS Cat4Ward Header

JBA

Part # 1860S

Fits All Trims

JBA 01-03 Gm Truck 8.1L BBC w/o EGR/A.I.R. 1-3/4in Primary Raw 409SS Cat4Ward Header

$672.59

JBA 01-03 Gm Truck 8.1L BBC w/o EGR/A.I.R. 1-3/4in Primary Silver Ctd Cat4Ward Header

JBA

Part # 1860SJS

Fits All Trims

JBA 01-03 Gm Truck 8.1L BBC w/o EGR/A.I.R. 1-3/4in Primary Silver Ctd Cat4Ward Header

$851.03

JBA 03-06 GM Truck 6.0L LS w/o EGR 1-5/8in Primary Raw 409SS Cat4Ward Header

JBA

Part # 1850S-3

Fits All Trims

JBA 03-06 GM Truck 6.0L LS w/o EGR 1-5/8in Primary Raw 409SS Cat4Ward Header

$719.27

Fel-Pro

Part # MS96788

Fits All Trims

Fel-Pro Chevrolet Silverado 2500 HD MS 96788 Exhaust Manifold Gasket Set

$43.14

Wehrli

Part # WCF100363

Fits All Trims

Wehrli 01-16 Chevrolet Duramax Exhaust Manifold Kit w/ Gaskets & Hardware

$1572.16

BBK 99-04 GM Truck SUV 6.0 Shorty Tuned Length Exhaust Headers - 1-3/4 Titanium Ceramic

BBK

Part # 4006

Fits All Trims

BBK 99-04 GM Truck SUV 6.0 Shorty Tuned Length Exhaust Headers - 1-3/4 Titanium Ceramic

$524.79

BD Diesel

Part # 1041400

Fits All Trims

BD Diesel Exhaust Manifold Kit - 02-13 Chevy Silverado 1500 & GMC Sierra 1500 V8

$626.83

Gibson

Part # GP131S-C

Fits All Trims

Gibson 01-03 Chevrolet Silverado 3500 Base 8.1L 1-3/4in 16 Gauge Performance Header - Ceramic Coated

$912.26

MAHLE Original Chevrolet Express 2500 12-06 Exhaust Manifold Set

Victor Reinz

Part # MS19398

Fits All Trims

MAHLE Original Chevrolet Express 2500 12-06 Exhaust Manifold Set

$37.17

MAHLE Original Chevrolet C2500 00-96 Exhaust Manifold Set

Victor Reinz

Part # MS16091

Fits All Trims

MAHLE Original Chevrolet C2500 00-96 Exhaust Manifold Set

$20.28

Fel-Pro

Part # MSB92467

Fits All Trims

Fel-Pro Chevrolet Silverado 1500 MSB 92467 Exhaust Manifold Gasket Set Bolts Included

$57.78

BBK 99-04 GM Truck SUV 6.0 Shorty Tuned Length Exhaust Headers - 1-3/4 Silver Ceramic

BBK

Part # 40060

Fits All Trims

BBK 99-04 GM Truck SUV 6.0 Shorty Tuned Length Exhaust Headers - 1-3/4 Silver Ceramic

$598.26

aFe Power Twisted Steel Headers 409 Stainless Steel 02-13 GM Silverado/Sierra 1500 V8 GMT800/GMT900

aFe

Part # 48-44001

Fits All Trims

aFe Power Twisted Steel Headers 409 Stainless Steel 02-13 GM Silverado/Sierra 1500 V8 GMT800/GMT900

$1223.85

BD Diesel

Part # 1041402

Fits All Trims

BD Diesel Driver Side Exhaust Manifold - 02-13 Chevy Silverado 1500 & GMC Sierra 1500 V8

$323.78

BD Diesel

Part # 1041401

Fits All Trims

BD Diesel Passenger Side Exhaust Manifold - 02-13 Chevy Silverado 1500 & GMC Sierra 1500 V8

$323.78

Gibson

Part # GP500S-C

Fits All Trims

Gibson 02-06 Cadillac Escalade Base 6.0L 1-5/8in 16 Gauge Performance Header - Ceramic Coated

$861.53

aFe Twisted Steel Up-Pipe GM Diesel Trucks 01-04 V8-6.6L (td) LB7

aFe

Part # 48-34009

Fits All Trims

aFe Twisted Steel Up-Pipe GM Diesel Trucks 01-04 V8-6.6L (td) LB7

$848.00

Gibson

Part # GP500S

Fits All Trims

Gibson 02-06 Cadillac Escalade Base 6.0L 1-5/8in 16 Gauge Performance Header - Stainless

$720.32

Wehrli

Part # WCF100174

Fits All Trims

Wehrli 01-04 Duramax LB7 Billet Exhaust Manifold & SS Up Pipes w/ Gaskets and ARP Hardware

$2098.75

Frequently Asked Questions

Do these parts fit my 2003 GMC Sierra 2500 HD?

This page groups parts listed for the 2003 GMC Sierra 2500 HD. 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 headers & manifolds options are available for my 2003 GMC Sierra 2500 HD?

We offer a wide selection of headers & manifolds parts for the 2003 GMC Sierra 2500 HD. 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?

We carry parts from trusted brands including BD Diesel, JBA, aFe, Fel-Pro, and Gibson, plus many more. Filter by brand to find your preferred manufacturer.

How fast do 2003 GMC Sierra 2500 HD 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 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

Headers & Manifolds (30 products)

aFe 01-04 GM V8-6.6L LB7 Twisted Steel Manifold w/ Up Pipe

JBA 01-03 Gm Truck 8.1L BBC w/o EGR/A.I.R. 1-3/4in Primary Raw 409SS Cat4Ward Header

JBA 01-03 Gm Truck 8.1L BBC w/o EGR/A.I.R. 1-3/4in Primary Silver Ctd Cat4Ward Header

JBA 03-06 GM Truck 6.0L LS w/o EGR 1-5/8in Primary Raw 409SS Cat4Ward Header

Fel-Pro Chevrolet Silverado 2500 HD MS 96788 Exhaust Manifold Gasket Set

Wehrli 01-16 Chevrolet Duramax Exhaust Manifold Kit w/ Gaskets & Hardware

BBK 99-04 GM Truck SUV 6.0 Shorty Tuned Length Exhaust Headers - 1-3/4 Titanium Ceramic

BD Diesel Exhaust Manifold Kit - 02-13 Chevy Silverado 1500 & GMC Sierra 1500 V8

Gibson 01-03 Chevrolet Silverado 3500 Base 8.1L 1-3/4in 16 Gauge Performance Header - Ceramic Coated

MAHLE Original Chevrolet Express 2500 12-06 Exhaust Manifold Set

MAHLE Original Chevrolet C2500 00-96 Exhaust Manifold Set

Fel-Pro Chevrolet Silverado 1500 MSB 92467 Exhaust Manifold Gasket Set Bolts Included

BBK 99-04 GM Truck SUV 6.0 Shorty Tuned Length Exhaust Headers - 1-3/4 Silver Ceramic

aFe Power Twisted Steel Headers 409 Stainless Steel 02-13 GM Silverado/Sierra 1500 V8 GMT800/GMT900

BD Diesel Driver Side Exhaust Manifold - 02-13 Chevy Silverado 1500 & GMC Sierra 1500 V8

BD Diesel Passenger Side Exhaust Manifold - 02-13 Chevy Silverado 1500 & GMC Sierra 1500 V8

Gibson 02-06 Cadillac Escalade Base 6.0L 1-5/8in 16 Gauge Performance Header - Ceramic Coated

aFe Twisted Steel Up-Pipe GM Diesel Trucks 01-04 V8-6.6L (td) LB7

Gibson 02-06 Cadillac Escalade Base 6.0L 1-5/8in 16 Gauge Performance Header - Stainless

Wehrli 01-04 Duramax LB7 Billet Exhaust Manifold & SS Up Pipes w/ Gaskets and ARP Hardware

Frequently Asked Questions

Do these parts fit my 2003 GMC Sierra 2500 HD?

What headers & manifolds options are available for my 2003 GMC Sierra 2500 HD?

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

How fast do 2003 GMC Sierra 2500 HD parts ship?

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