29+ 2003 GMC Sierra 1500 Headers & Manifolds Parts - Page 2

Headers & Manifolds (29 products)

Fel-Pro

Fits All Trims

Fel-Pro 09-13 Chevrolet Silverado 1500/09-13 Corvette/12-15 Camaro Exhaust Manifold Gasket Set

$13.13

Stainless Works

Choose Trim

Stainless Works 2003-06 Chevy/GMC 6.0L (4WD only) Truck 1-3/4in Primaries 2-1/2in High-Flow Cats

$2067.84

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

JBA

Choose Trim

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

$896.62

JBA 03-13 GM Truck 4.3L V6 1-1/2in Primary Silver Ctd Cat4Ward Header

JBA

Choose Trim

JBA 03-13 GM Truck 4.3L V6 1-1/2in Primary Silver Ctd Cat4Ward Header

$882.86

MAHLE Original Chevrolet Astro 05-96 Exhaust Manifold Set

Victor Reinz

Choose Trim

MAHLE Original Chevrolet Astro 05-96 Exhaust Manifold Set

$19.01

Banks Power

Fits All Trims

Banks Power 02-11 Chevy 4.8-5.3L Torque Tube System non-A/I

$695.30

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

JBA

Choose Trim

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

$845.03

Kooks 02-05 Cadillac Escalade/Chevrolet Silverado 1500 1-3/4 x 3 Header & Catted Y-Pipe Kit

Kooks Headers

Choose Trim

Kooks 02-05 Cadillac Escalade/Chevrolet Silverado 1500 1-3/4 x 3 Header & Catted Y-Pipe Kit

$3230.82

Kooks 02-05 Cadillac Escalade Base /Chevrolet Silverado 1-7/8 x 3 Header & Catted Y-Pipe Kit

Kooks Headers

Choose Trim

Kooks 02-05 Cadillac Escalade Base /Chevrolet Silverado 1-7/8 x 3 Header & Catted Y-Pipe Kit

$3430.95

Showing 21-29 of 29

Frequently Asked Questions

Do these parts fit my 2003 GMC Sierra 1500?

This page groups parts listed for the 2003 GMC Sierra 1500. 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 1500?

We offer a wide selection of headers & manifolds parts for the 2003 GMC Sierra 1500. 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 1500?

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

How fast do 2003 GMC Sierra 1500 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 1500 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 1500(5,353 parts)

Shop by Problem

Other GMC Sierra 1500 Years

2003 GMC Sierra 1500(5,353 parts)

Shop by Problem

Other GMC Sierra 1500 Years

Headers & Manifolds (29 products)

Fel-Pro 09-13 Chevrolet Silverado 1500/09-13 Corvette/12-15 Camaro Exhaust Manifold Gasket Set

Stainless Works 2003-06 Chevy/GMC 6.0L (4WD only) Truck 1-3/4in Primaries 2-1/2in High-Flow Cats

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

JBA 03-13 GM Truck 4.3L V6 1-1/2in Primary Silver Ctd Cat4Ward Header

MAHLE Original Chevrolet Astro 05-96 Exhaust Manifold Set

Banks Power 02-11 Chevy 4.8-5.3L Torque Tube System non-A/I

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

Kooks 02-05 Cadillac Escalade/Chevrolet Silverado 1500 1-3/4 x 3 Header & Catted Y-Pipe Kit

Kooks 02-05 Cadillac Escalade Base /Chevrolet Silverado 1-7/8 x 3 Header & Catted Y-Pipe Kit

Frequently Asked Questions

Do these parts fit my 2003 GMC Sierra 1500?

What headers & manifolds options are available for my 2003 GMC Sierra 1500?

What brands make parts for the 2003 GMC Sierra 1500?

How fast do 2003 GMC Sierra 1500 parts ship?

What warranty do your 2003 GMC Sierra 1500 parts come with?