1267+ 2003 Chevrolet Silverado 3500 Engine & Drivetrain LT Parts - Page 16

LT · Engine & Drivetrain (1,259 products)

Exact-fit parts for the 2003 Chevrolet Silverado 3500 LT.

Fleece Performance

Part # FPE-HAR-GM-AT-20-PT

Confirmed Fit

Fleece Performance GM Automatic Transmission 20-Pin Pigtail

$108.79

Clevite

Part # MS2218HX

Confirmed Fit

Clevite Chevrolet V8 6.6L Turbo Diesel 2001-05 Main Bearing Set

$189.58

Cometic GM LS1 SB 4.190 inch Bore .051 inch MLS Head Gasket

Cometic Gasket

Part # C5319-051

Confirmed Fit

Cometic GM LS1 SB 4.190 inch Bore .051 inch MLS Head Gasket

$97.74

Fel-Pro

Part # ES71347

Confirmed Fit

Fel-Pro Chevrolet Silverado 2500 HD Engine Water Pump Installation Kit

$21.35

BD Diesel

Part # 1064704

Confirmed Fit

BD Diesel Transmission - 2001-2004 Chev LB7 Allison 1000 4wd

$5161.11

Yukon 10.5in GM 14 Bolt 4.56 Thick Rear Ring & Pinion Install Kit

Yukon Gear & Axle

Part # YGK2121

Confirmed Fit

Yukon 10.5in GM 14 Bolt 4.56 Thick Rear Ring & Pinion Install Kit

$1073.89

Cometic 01-06 GM 6.6L Duramax Diesel 4.100 inch Bore .045 inch MLS RHS Head Gasket

Cometic Gasket

Part # C5882-045

Confirmed Fit

Cometic 01-06 GM 6.6L Duramax Diesel 4.100 inch Bore .045 inch MLS RHS Head Gasket

$158.49

Skyward Automotive

Part # SK060923

Fits with Conditions

SERPENTINE BELT

$11.07

Sealed Power

Part # 152M

Fits with Conditions

Engine Crankshaft Main Bearing Set

$192.72

Cometic GM LS1 SB 4.160 inch Bore .030 inch MLS Head Gasket

Cometic Gasket

Part # C5318-030

Confirmed Fit

Cometic GM LS1 SB 4.160 inch Bore .030 inch MLS Head Gasket

$97.74

Cometic GM LS Gen-3/4 Small Block V8 .044in MLX Cylinder Head Gasket - 4.040in Bore

Cometic Gasket

Part # C5505-044

Confirmed Fit

Cometic GM LS Gen-3/4 Small Block V8 .044in MLX Cylinder Head Gasket - 4.040in Bore

$123.48

NGK Cadillac Escalade 2003 Direct Fit Oxygen Sensor

NGK

Part # 21548

Confirmed Fit

NGK Cadillac Escalade 2003 Direct Fit Oxygen Sensor

$61.80

Yukon 10.5in GM 14 Bolt 4.11 Rear Ring & Pinion Install Kit 30 Spline Positraction

Yukon Gear & Axle

Part # YGK2126

Confirmed Fit

Yukon 10.5in GM 14 Bolt 4.11 Rear Ring & Pinion Install Kit 30 Spline Positraction

$2307.89

MAHLE Original Buick Rainier 04 Cylinder Head Bolts

Victor Reinz

Part # GS33380

Confirmed Fit

MAHLE Original Buick Rainier 04 Cylinder Head Bolts

$42.30

Cometic GM LS1 SB 4.100in Bore .070in MLS-5 Head Gasket

Cometic Gasket

Part # C5489-070

Confirmed Fit

Cometic GM LS1 SB 4.100in Bore .070in MLS-5 Head Gasket

$131.62

Skyward Automotive

Part # SK060950

Fits with Conditions

SERPENTINE BELT

$10.87

Cometic GM LS1 SB 4.060 inch Bore .070 inch MLS-5 Head Gasket

Cometic Gasket

Part # C5751-070

Confirmed Fit

Cometic GM LS1 SB 4.060 inch Bore .070 inch MLS-5 Head Gasket

$131.62

Fel-Pro

Part # VS50504R1

Confirmed Fit

Fel-Pro Engine 09-13 Chevrolet Silverado 1500/08-13 Corvette Valve Cover Gasket Set

$24.68

Cometic 01-06 GM 6.6L Duramax 4.100in Bore .040in MLS Head Gasket - Left

Cometic Gasket

Part # C5883-040

Confirmed Fit

Cometic 01-06 GM 6.6L Duramax 4.100in Bore .040in MLS Head Gasket - Left

$158.49

BBK 03-06 GM 4.8 5.3 6.0 Hummer H2 80mm Throttle Body BBK Power Plus Series

BBK

Part # 1757

Confirmed Fit

BBK 03-06 GM 4.8 5.3 6.0 Hummer H2 80mm Throttle Body BBK Power Plus Series

$430.32

Frequently Asked Questions

Do these parts fit my 2003 Chevrolet Silverado 3500 LT?

This page groups parts listed for the 2003 Chevrolet Silverado 3500 LT. 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 Silverado 3500 LT?

We offer a wide selection of engine & drivetrain parts for the 2003 Chevrolet Silverado 3500 LT. 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 Silverado 3500 LT?

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

How fast do 2003 Chevrolet Silverado 3500 LT 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 Silverado 3500 LT 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 Silverado 3500(5,017 parts)

2003 Chevrolet Silverado 3500(5,017 parts)

Shop by Problem

Other Chevrolet Silverado 3500 Years

LT · Engine & Drivetrain (1,259 products)

Fleece Performance GM Automatic Transmission 20-Pin Pigtail

Clevite Chevrolet V8 6.6L Turbo Diesel 2001-05 Main Bearing Set

Cometic GM LS1 SB 4.190 inch Bore .051 inch MLS Head Gasket

Fel-Pro Chevrolet Silverado 2500 HD Engine Water Pump Installation Kit

BD Diesel Transmission - 2001-2004 Chev LB7 Allison 1000 4wd

Yukon 10.5in GM 14 Bolt 4.56 Thick Rear Ring & Pinion Install Kit

Cometic 01-06 GM 6.6L Duramax Diesel 4.100 inch Bore .045 inch MLS RHS Head Gasket

SERPENTINE BELT

Engine Crankshaft Main Bearing Set

Cometic GM LS1 SB 4.160 inch Bore .030 inch MLS Head Gasket

Cometic GM LS Gen-3/4 Small Block V8 .044in MLX Cylinder Head Gasket - 4.040in Bore

NGK Cadillac Escalade 2003 Direct Fit Oxygen Sensor

Yukon 10.5in GM 14 Bolt 4.11 Rear Ring & Pinion Install Kit 30 Spline Positraction

MAHLE Original Buick Rainier 04 Cylinder Head Bolts

Cometic GM LS1 SB 4.100in Bore .070in MLS-5 Head Gasket

SERPENTINE BELT

Cometic GM LS1 SB 4.060 inch Bore .070 inch MLS-5 Head Gasket

Fel-Pro Engine 09-13 Chevrolet Silverado 1500/08-13 Corvette Valve Cover Gasket Set

Cometic 01-06 GM 6.6L Duramax 4.100in Bore .040in MLS Head Gasket - Left

BBK 03-06 GM 4.8 5.3 6.0 Hummer H2 80mm Throttle Body BBK Power Plus Series

Frequently Asked Questions

Do these parts fit my 2003 Chevrolet Silverado 3500 LT?

What engine & drivetrain options are available for my 2003 Chevrolet Silverado 3500 LT?

What brands make parts for the 2003 Chevrolet Silverado 3500 LT?

How fast do 2003 Chevrolet Silverado 3500 LT parts ship?

What warranty do your 2003 Chevrolet Silverado 3500 LT parts come with?