2003 GMC SIERRA-1500-HD Engines & Components

Harmonic Balancer, Super Damper, Internal Balance, Aluminum/Steel, Chevy, GMC, LS, Each

Part Number: ATI-918629

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Underdrive Harmonic Damper, 25% Underdrive, SFI 18.1, Chevrolet/GMC 4.8L/5.3L/6.0L Trucks/SUVs, Long Spacing, Each

Part Number: TFS-18012

4.27 out of 5 stars ( 11 )

Estimated Ship Date: Today

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Oil Cooler Adapter, Right Angle, -10 AN Inlet, -10 AN Outlet, Billet Aluminum, Black Anodized, 212 Degree Thermostat, Hardware, Each

Part Number: EAR-LS0013ERL

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Timing Chain and Gear Set, Hex-A-Just Roller, Single Roller, Z-Chain, Chevy, LS1, LS2, LS6, Set

Part Number: CLO-9-3158AZ

5.0 out of 5 stars ( 2 )

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Lifter Valley Plates, LS Valley, Billet Aluminum, Trussed with Oil Fill, Natural Finish, 10-Bolt Pattern, Chevy, LS, 5.7L, Each

Part Number: HLY-241-367

5.0 out of 5 stars ( 1 )

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CAMSHAFT

Part Number: MEL-MTC-7

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Camshaft, Hydraulic Roller Tappet, Advertised Duration 279/268, Lift .456/.466, Chevy, LS, 5.7, 6.0L, Each

Part Number: MEL-MC1384

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Harmonic Balancer, Steel Shell, Less Hub, Chevy, Chrysler, Each

Part Number: ATI-917071

5.0 out of 5 stars ( 1 )

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Harmonic Balancer, PQx, Internal Balance, Black, Chevy, LS, Each

Part Number: PQX-2432340

3.0 out of 5 stars ( 2 )

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Pistons, Hypereutectic, Chevy, GMC, 6.0 LS, Set of 8

Part Number: SLP-H1505CPA50MM

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Camshafts HYD. TORQUE CAMSHAFT

Part Number: MEL-MTC-8

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Timing Set, Single Roller, Steel Sprockets, Chevy, Set

Part Number: CLO-9-3658TX9Z

5.0 out of 5 stars ( 1 )

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Lifter Valley Plates, LS Valley, Billet Aluminum, Trussed with Oil Fill, Black Anodized, 10-Bolt Pattern, Chevy, LS, 5.7L, Each

Part Number: HLY-241-369

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Timing Set, Single Roller Chain, Billet Steel Sprockets, Chevy, 5.7L LS, 6.0L LS, Set

Part Number: CLO-9-3658TX3Z

4.5 out of 5 stars ( 2 )

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Cylinder Head Studs, 8740 Chromoly, 200,000 PSI Tensile Strength, Black Oxide, 12-Point Nuts, Undercut, Chevy, LS, Kit

Part Number: PQX-1034641

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Estimated Ship Date: Oct 29, 2025 if ordered today

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Timing Cover, Distributor Conversion, Aluminum, Natural, LS GEN III, Kit

Part Number: PQX-5234600

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Engine Camshaft, High Performance Camshaft

Part Number: MEL-22307

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Oil Pan, Aluminum, Natural, Cadillac, Chevy, GMC, Hummer, Small Block LS, Each

Part Number: SGT-GMP53A

4.0 out of 5 stars ( 1 )

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Timing Set, Single Roller, Steel Sprockets, 0.390 in. Raised Cam, Chevy, LS, Set

Part Number: CLO-9-3658TX9ZR

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Estimated Ship Date: Sep 29, 2025 if ordered today

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Engine Timing Set, High Performance Timing Set

Part Number: CLO-9-3159AZ

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Estimated Ship Date: Sep 29, 2025 if ordered today

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Cylinder Head, Remanufactured, Assembled, Aluminum, Natural, Cadillac, Chevy, GMC, Hummer, Isuzu, V8, Each

Part Number: VRE-2CTF

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Estimated Ship Date: Oct 27, 2025 if ordered today

• Core Charge $130.00
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CAMSHAFT ENGINE

Part Number: MEL-22326

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Estimated Ship Date: Oct 10, 2025 if ordered today

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CAMSHAFT ENGINE

Part Number: MEL-22327

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Estimated Ship Date: Oct 13, 2025 if ordered today

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CAMSHAFT ENGINE

Part Number: MEL-22206

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Estimated Ship Date: Oct 13, 2025 if ordered today

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CAMSHAFT ENGINE

Part Number: MEL-22310

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Estimated Ship Date: Oct 10, 2025 if ordered today

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