1258+ 2003 GMC Sierra 1500 Engine & Drivetrain SLT Parts - Page 60

SLT · Engine & Drivetrain (1,235 products)

Exact-fit parts for the 2003 GMC Sierra 1500 SLT.

King Engine Bearings

Part # MB5013XP010X

Confirmed Fit

King Engine Bearings Chevy LS1 / LS6 / LS3 (Size 010X) Performance Main Bearing Set

$203.49

ACL Chevy V8 4.8/5.3/5.7/6.0L Race Series Standard Size Main Bearing Set - CT-1 Coated

ACL

Part # 5M7298HC-STD

Confirmed Fit

ACL Chevy V8 4.8/5.3/5.7/6.0L Race Series Standard Size Main Bearing Set - CT-1 Coated

$253.34

FTI 9.5in 4L80E/4L85E Billet Triple Disc Lock-Up Street Racer Series - LS - 3800 Stall

FTI Performance

Part # SRLS46391-3

Confirmed Fit

FTI 9.5in 4L80E/4L85E Billet Triple Disc Lock-Up Street Racer Series - LS - 3800 Stall

$1554.75

King Engine Bearings

Part # MB5777XP

Confirmed Fit

King Engine Bearings Dart LS Next Block (Size STD) Performance Main Bearing Set

$206.92

Clevite

Part # CB663P40(8)

Confirmed Fit

Clevite Chevy V8 305-350-400 1967-95 Con Rod Bearing Set

$68.48

Cometic GM LS1 SB 4.100in Bore .056in MLS Head Gasket

Cometic Gasket

Part # C5489-056

Confirmed Fit

Cometic GM LS1 SB 4.100in Bore .056in MLS Head Gasket

$123.94

MAHLE Original Avanti II 69-65 Oil Pump Shaft Retainer

Victor Reinz

Part # H31354

Confirmed Fit

MAHLE Original Avanti II 69-65 Oil Pump Shaft Retainer

$14.30

ACL Chevrolet V8 305-350-400 Race Series Narrowed .020 Conrod Rod Bearing Set

ACL

Part # 8B663HN-020

Confirmed Fit

ACL Chevrolet V8 305-350-400 Race Series Narrowed .020 Conrod Rod Bearing Set

$91.56

Clevite

Part # CB663HN20

Confirmed Fit

Clevite Chevrolet V8 262-265-267-294-305-307-325-346-350-365-400 1967-2005 Con Rod Bearing Set

$29.88

ACL Chevy V8 4.8/5.3/5.7/6.0L Race Series .10mm Oversized Main Bearing Set

ACL

Part # 5M7298H-10

Confirmed Fit

ACL Chevy V8 4.8/5.3/5.7/6.0L Race Series .10mm Oversized Main Bearing Set

$175.51

Cometic GM LS1 SB 4.100in Bore .051in MLS-5 Head Gasket

Cometic Gasket

Part # C5489-051

Confirmed Fit

Cometic GM LS1 SB 4.100in Bore .051in MLS-5 Head Gasket

$97.74

Clevite

Part # MS1454P30

Confirmed Fit

Clevite Chevrolet Pass & Trk 200 3.3L 229 3.8L 262 4.3L V6 1978-94 Main Bearing Set

$75.93

Cometic GM LS1/LS2/LS3/LS6 Gen-3/4 Small Block V8 3.810in Bore .036in MLS Cylinder Head Gasket

Cometic Gasket

Part # C15361-036

Confirmed Fit

Cometic GM LS1/LS2/LS3/LS6 Gen-3/4 Small Block V8 3.810in Bore .036in MLS Cylinder Head Gasket

$97.74

King Engine Bearings

Part # CR807XPNC001

Confirmed Fit

King Engine Bearings Chevrolet SBC 307ci/350ci Gen II/IV Performance Rod Bearing Set

$169.79

Mahle Rings GMC Pass 262 4.3L Eng 96-99 GMC Trk 262 4.3L Eng 96-99 Plain Ring Set

Mahle OE

Part # 51786CP.020

Confirmed Fit

Mahle Rings GMC Pass 262 4.3L Eng 96-99 GMC Trk 262 4.3L Eng 96-99 Plain Ring Set

$52.13

King Engine Bearings

Part # CR807XPND010

Confirmed Fit

King Engine Bearings Chevy LS1 / LS6 (Size 010) Performance Rod Bearing Set

$124.12

COMP Cams

Part # 1677-16

Confirmed Fit

COMP Cams Rocker Arms GM LS1LS2LS6 1.8

$617.86

Cometic GM LS1/LS2/LS3/LS6 Gen-III/IV Small Block V8 4.080in Bore .040in MLS Cylinder Head Gasket

Cometic Gasket

Part # C15522-040

Confirmed Fit

Cometic GM LS1/LS2/LS3/LS6 Gen-III/IV Small Block V8 4.080in Bore .040in MLS Cylinder Head Gasket

$97.74

Mahle OE

Part # 2243536

Confirmed Fit

Mahle OE GM 5.3L 325 V8 99-04599171-STD w/ P Piston Set (Set of 8)

$339.81

FTI 9.5in 4L60E/4L65E/4L70E Billet Triple Disc Lock-Up Street Racer Series - LS - Custom Stall

FTI Performance

Part # SRLS7082-3

Confirmed Fit

FTI 9.5in 4L60E/4L65E/4L70E Billet Triple Disc Lock-Up Street Racer Series - LS - Custom Stall

$1554.75

Frequently Asked Questions

Do these parts fit my 2003 GMC Sierra 1500 SLT?

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

We offer a wide selection of engine & drivetrain parts for the 2003 GMC Sierra 1500 SLT. 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 SLT?

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

How fast do 2003 GMC Sierra 1500 SLT 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 SLT 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)

2003 GMC Sierra 1500(5,353 parts)

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Other GMC Sierra 1500 Years

SLT · Engine & Drivetrain (1,235 products)

King Engine Bearings Chevy LS1 / LS6 / LS3 (Size 010X) Performance Main Bearing Set

ACL Chevy V8 4.8/5.3/5.7/6.0L Race Series Standard Size Main Bearing Set - CT-1 Coated

FTI 9.5in 4L80E/4L85E Billet Triple Disc Lock-Up Street Racer Series - LS - 3800 Stall

King Engine Bearings Dart LS Next Block (Size STD) Performance Main Bearing Set

Clevite Chevy V8 305-350-400 1967-95 Con Rod Bearing Set

Cometic GM LS1 SB 4.100in Bore .056in MLS Head Gasket

MAHLE Original Avanti II 69-65 Oil Pump Shaft Retainer

ACL Chevrolet V8 305-350-400 Race Series Narrowed .020 Conrod Rod Bearing Set

Clevite Chevrolet V8 262-265-267-294-305-307-325-346-350-365-400 1967-2005 Con Rod Bearing Set

ACL Chevy V8 4.8/5.3/5.7/6.0L Race Series .10mm Oversized Main Bearing Set

Cometic GM LS1 SB 4.100in Bore .051in MLS-5 Head Gasket

Clevite Chevrolet Pass & Trk 200 3.3L 229 3.8L 262 4.3L V6 1978-94 Main Bearing Set

Cometic GM LS1/LS2/LS3/LS6 Gen-3/4 Small Block V8 3.810in Bore .036in MLS Cylinder Head Gasket

King Engine Bearings Chevrolet SBC 307ci/350ci Gen II/IV Performance Rod Bearing Set

Mahle Rings GMC Pass 262 4.3L Eng 96-99 GMC Trk 262 4.3L Eng 96-99 Plain Ring Set

King Engine Bearings Chevy LS1 / LS6 (Size 010) Performance Rod Bearing Set

COMP Cams Rocker Arms GM LS1LS2LS6 1.8

Cometic GM LS1/LS2/LS3/LS6 Gen-III/IV Small Block V8 4.080in Bore .040in MLS Cylinder Head Gasket

Mahle OE GM 5.3L 325 V8 99-04599171-STD w/ P Piston Set (Set of 8)

FTI 9.5in 4L60E/4L65E/4L70E Billet Triple Disc Lock-Up Street Racer Series - LS - Custom Stall

Frequently Asked Questions

Do these parts fit my 2003 GMC Sierra 1500 SLT?

What engine & drivetrain options are available for my 2003 GMC Sierra 1500 SLT?

What brands make parts for the 2003 GMC Sierra 1500 SLT?

How fast do 2003 GMC Sierra 1500 SLT parts ship?

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