1177+ 2003 Chevrolet Express 2500 Engine & Drivetrain LS Parts - Page 41

LS · Engine & Drivetrain (1,177 products)

Exact-fit parts for the 2003 Chevrolet Express 2500 LS.

Cometic GM LS1 SB 4.190 inch Bore .045 inch MLS Head Gasket

Cometic Gasket

Part # C5319-045

Confirmed Fit

Cometic GM LS1 SB 4.190 inch Bore .045 inch MLS Head Gasket

$97.74

Cometic GM LS1 SB 3.910 inch Bore .098 inch MLS-5 Head Gasket

Cometic Gasket

Part # C5475-098

Confirmed Fit

Cometic GM LS1 SB 3.910 inch Bore .098 inch MLS-5 Head Gasket

$143.45

Cometic GM LS Gen-3/4 Small Block V8 .070in MLS Cylinder Head Gasket - 3.910in Bore

Cometic Gasket

Part # C5475-070

Confirmed Fit

Cometic GM LS Gen-3/4 Small Block V8 .070in MLS Cylinder Head Gasket - 3.910in Bore

$131.62

Cometic GM LS1 SB 4.160 inch Bore .056 inch MLS-5 Head Gasket

Cometic Gasket

Part # C5318-056

Confirmed Fit

Cometic GM LS1 SB 4.160 inch Bore .056 inch MLS-5 Head Gasket

$131.62

USA Standard Ring & Pinion Gear Set For 10.5in GM 14 Bolt Truck in a 4.11 Ratio

Yukon Gear & Axle

Part # ZG GM14T-411

Confirmed Fit

USA Standard Ring & Pinion Gear Set For 10.5in GM 14 Bolt Truck in a 4.11 Ratio

$419.89

Cometic GM LS1 SB 4.060 inch Bore .040 inch MLS Head Gasket

Cometic Gasket

Part # C5751-040

Confirmed Fit

Cometic GM LS1 SB 4.060 inch Bore .040 inch MLS Head Gasket

$97.74

Cometic GM LS1 SB 4.160 inch Bore .080 inch MLS-5 Head Gasket

Cometic Gasket

Part # C5318-080

Confirmed Fit

Cometic GM LS1 SB 4.160 inch Bore .080 inch MLS-5 Head Gasket

$143.45

Dorman

Part # 594-181

Fits with Conditions

Harmonic Balancer Assembly

$65.30

Skyward Automotive

Part # SK100085

Fits with Conditions

Engine Crankshaft Seal

$14.00

King Engine Bearings

Part # CR807SISTDX

Confirmed Fit

King Engine Bearings Chevrolet SBC 307Ci 350Ci & Gen Iii/Iv (Size STDX) Connecting Rod Bearing Set

$32.24

Yukon Gear 1410 U/Joint w/Zerk Fitting 4.188in Snap Ring 1.118in Cap Diameter Outside Snap Ring

Yukon Gear & Axle

Part # YUJ160

Confirmed Fit

Yukon Gear 1410 U/Joint w/Zerk Fitting 4.188in Snap Ring 1.118in Cap Diameter Outside Snap Ring

$66.89

Fel-Pro

Part # 522SD

Confirmed Fit

Fel-Pro Chevrolet S10 522 SD Severe Duty Engine Cylinder Head Gasket

$53.32

COMP Cams

Part # 4611-1

Confirmed Fit

COMP Cams Bolt Cam Chevy V-8

$9.95

MAHLE Original Chevrolet Astro 05-99 Rear Main Seal Set

Victor Reinz

Part # JV1656

Confirmed Fit

MAHLE Original Chevrolet Astro 05-99 Rear Main Seal Set

$40.40

Cometic GM LS1 SB 4.060in Bore .060 inch MLS Head Gasket

Cometic Gasket

Part # C5751-060

Confirmed Fit

Cometic GM LS1 SB 4.060in Bore .060 inch MLS Head Gasket

$131.62

Dorman

Part # 929-724

Fits with Conditions

U-Bolt Repair Kit

$39.57

Cometic GM LS Gen-3/4 Small Block V8 .086in MLS Cylinder Head Gasket - 4.100in Bore

Cometic Gasket

Part # C5489-086

Confirmed Fit

Cometic GM LS Gen-3/4 Small Block V8 .086in MLS Cylinder Head Gasket - 4.100in Bore

$143.45

COMP Cams

Part # 54-469-11

Confirmed Fit

COMP Cams Camshaft LS1 281Lrr HR-113

$442.84

Clevite

Part # CB663A30(8)

Confirmed Fit

Clevite Chevrolet V8 262-265-267-294-305-307-325-346-350-365-400 1967-03 Con Rod Bearing Set

$35.84

COMP Cams

Part # CK54-700-11

Confirmed Fit

COMP Cams Stage 1 Thumpr 218/229 Hydraulic Roller Cam Kit for Gen III LS 4.8/5.3/6.0L Trucks

$988.12

Frequently Asked Questions

Do these parts fit my 2003 Chevrolet Express 2500 LS?

This page groups parts listed for the 2003 Chevrolet Express 2500 LS. 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 engine & drivetrain options are available for my 2003 Chevrolet Express 2500 LS?

We offer a wide selection of engine & drivetrain parts for the 2003 Chevrolet Express 2500 LS. 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 Chevrolet Express 2500 LS?

We carry parts from trusted brands including Yukon Gear & Axle, COMP Cams, Cometic Gasket, Clevite, and King Engine Bearings, plus many more. Filter by brand to find your preferred manufacturer.

How fast do 2003 Chevrolet Express 2500 LS 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 Chevrolet Express 2500 LS 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 Chevrolet Express 2500(3,743 parts)

2003 Chevrolet Express 2500(3,743 parts)

Shop by Problem

Other Chevrolet Express 2500 Years

LS · Engine & Drivetrain (1,177 products)

Cometic GM LS1 SB 4.190 inch Bore .045 inch MLS Head Gasket

Cometic GM LS1 SB 3.910 inch Bore .098 inch MLS-5 Head Gasket

Cometic GM LS Gen-3/4 Small Block V8 .070in MLS Cylinder Head Gasket - 3.910in Bore

Cometic GM LS1 SB 4.160 inch Bore .056 inch MLS-5 Head Gasket

USA Standard Ring & Pinion Gear Set For 10.5in GM 14 Bolt Truck in a 4.11 Ratio

Cometic GM LS1 SB 4.060 inch Bore .040 inch MLS Head Gasket

Cometic GM LS1 SB 4.160 inch Bore .080 inch MLS-5 Head Gasket

Harmonic Balancer Assembly

Engine Crankshaft Seal

King Engine Bearings Chevrolet SBC 307Ci 350Ci & Gen Iii/Iv (Size STDX) Connecting Rod Bearing Set

Yukon Gear 1410 U/Joint w/Zerk Fitting 4.188in Snap Ring 1.118in Cap Diameter Outside Snap Ring

Fel-Pro Chevrolet S10 522 SD Severe Duty Engine Cylinder Head Gasket

COMP Cams Bolt Cam Chevy V-8

MAHLE Original Chevrolet Astro 05-99 Rear Main Seal Set

Cometic GM LS1 SB 4.060in Bore .060 inch MLS Head Gasket

U-Bolt Repair Kit

Cometic GM LS Gen-3/4 Small Block V8 .086in MLS Cylinder Head Gasket - 4.100in Bore

COMP Cams Camshaft LS1 281Lrr HR-113

Clevite Chevrolet V8 262-265-267-294-305-307-325-346-350-365-400 1967-03 Con Rod Bearing Set

COMP Cams Stage 1 Thumpr 218/229 Hydraulic Roller Cam Kit for Gen III LS 4.8/5.3/6.0L Trucks

Frequently Asked Questions

Do these parts fit my 2003 Chevrolet Express 2500 LS?

What engine & drivetrain options are available for my 2003 Chevrolet Express 2500 LS?

What brands make parts for the 2003 Chevrolet Express 2500 LS?

How fast do 2003 Chevrolet Express 2500 LS parts ship?

What warranty do your 2003 Chevrolet Express 2500 LS parts come with?