2003 Engines & Components

Valve Cover Set, LS Race, Lightweight Die Cast Aluminum, With Coil Mounts, Black Powdercoat, Pair

Part Number: SUM-440821

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Cam Bearings, Bi Metal, Chevy, 4.8, 5.3, 5.7, 6.0L, 1st Design, Kit

Part Number: DUR-CH-10

4.41 out of 5 stars ( 27 )

Estimated Ship Date: Today

Main Bearings, 1/2 Groove, Standard Size, Bi-metal, Silicon Aluminum, Chevy, Small Block, LS, Set of 5

Part Number: KGB-MB5013HP

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Today

Valve Covers, Center and Perimeter Bolt, Tall, Chevy Logo, Cast Aluminum, Red Gloss, Two-Piece, Chevy, LS, 4.8-7.0L, Pair

Part Number: HLY-241-179

4.33 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Crate Engine, Remanufactured, Long Block, Assembled, GM, 5.3L, 4WD, Each

Part Number: VRE-VCT84WD

3.67 out of 5 stars ( 6 )

Estimated Ship Date: May 14, 2026 if ordered today

• Core Charge $445.00
• Drop Ship
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• Special Order

Rod Bearing, H Series, Standard Size, TM-77, Chevrolet, 265, 283, 302, 327, Each

Part Number: CLE-CB745HN

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Today

Harmonic Balancer Bolt, Steel, Flanged Hex, Coarse Thread, Natural, Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Pontiac, Saab, Each

Part Number: ADO-12557840

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

Harmonic Balancer, OEM, Internal Balance, Nodular Iron, Natural, Chrysler, Dodge, Plymouth, Mopar Small Block LA, Each

Part Number: SUM-163273

4.47 out of 5 stars ( 30 )

Estimated Ship Date: Today

Engine Oil Dipstick, LS Cast Retro Pan, Billet Aluminum Handle, Black, Steel Tube with Braided Dipstick, Chevy GM, LS/LSX, Gen III/IV., Each

Part Number: SUM-122240

4.2 out of 5 stars ( 5 )

Estimated Ship Date: Today

Rod Bearing, H Series, Coated, Standard Size, TM-77, Chevy, Small Block, Each

Part Number: CLE-CB663HNC

Not Yet Reviewed

Estimated Ship Date: Today

Pro LS Piston and Rod Kit, 364 Cid., 4.000 bore, 3.622 stroke, 6.125 rod, 2cc Flat Top, 10.7:1 @ 65cc, 10.4:1 @ 70cc, File-Fit Rings

Part Number: SUM-PR36L0002

Not Yet Reviewed

Estimated Ship Date: Today

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Valve Covers, Aluminum LS, Center and Perimeter Bolt, Tall, Chevy Logo, Cast Aluminum, Orange Gloss, Two-Piece, Chevy, LS, 4.8-7.0L, Pair

Part Number: HLY-241-178

3.6 out of 5 stars ( 5 )

Estimated Ship Date: Today

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Cam and Lifter kit, Stage 2 Pro LS Cam. 226/238 113+3, .600/.600 Lift, 3-bolt, 4.8, 5.3, 5.7, 6.0, 6.2, 7.0, LS1,2,3,6,7, LSA LQ4 LQ9 LS9 LS4 LY6

Part Number: SUM-K8707R1

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Harmonic Balancer, Underdrive, Internal Balance, Aluminum/Steel, Black, Chevy, 5.7L, Each

Part Number: ATI-917278

4.83 out of 5 stars ( 6 )

Estimated Ship Date: Today

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Oil Pans, Retrofit, LS Engine Swap, Rear Sump, Wet Style, 5.6 Quarts, Aluminum, Natural, Buick, Chevy, Ford, GMC, Mercury, Oldsmobile, Pontiac, Each

Part Number: HLY-302-5

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Camshaft Kit, Pro LS, Hydraulic Roller Tappet, Advertised Duration 280/292, Lift .600/.600, Chevy GM, LS/LSX, Gen III/IV, Each

Part Number: SUM-8708-1DS

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Valve Covers, Aluminum LS, Centerbolt, Tall, Plain, Cast Aluminum, Black Powdercoat, Textured, Chevy, LS, 4.8-7.0L, Pair

Part Number: HLY-241-112

4.53 out of 5 stars ( 17 )

Estimated Ship Date: Today

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Cam Bearings, Bi Metal, Chevy, Small Block, Kit

Part Number: DUR-CH-8

4.95 out of 5 stars ( 22 )

Estimated Ship Date: Today

Timing Chain and Gear Set, Double Roller, Billet, 3-Bolt, One Cam Sensor, Chevy, 6.0L, Set

Part Number: SUM-G6614R-B

4.2 out of 5 stars ( 5 )

Estimated Ship Date: Today

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Pro LS 2618 Forged Pistons. 3.785 bore, 1.299 C.H., 2cc dome, Std. Stroke, .6.125 Rod, NA/Boost/Nitrous, Coated, 4.8L 5.3L LS Vortec Truck, Set of 8

Part Number: SUM-2999273785-2

Not Yet Reviewed

Estimated Ship Date: Today

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Valve Springs, RPM Series, Dual, 1.324 in. O.D., 500 lbs./in. Rate, 1.000 in. Coil Bind Height, Set of 16

Part Number: RSC-PAC-1209X-16

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Rod Bearings, XP-Series, Tri-Metal, .010 in. Crankshaft Undersize, Narrowed, Large Journal, Chevy, Small Block, Set of 8

Part Number: KGB-CR807XPN010

4.67 out of 5 stars ( 6 )

Estimated Ship Date: Today

Rod Bearings, A-Series, Bi Metal, Standard Size, Chevy, Small Block, Set of 8

Part Number: SLP-8-2555A

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Today

Cylinder Head Fasteners, 12-point Style, Stud, Mixed Length Lower, Early LS Style, Custom Age 625-Plus Material, 270,000 psi, Mixed Finishes, Kit

Part Number: ARP-234-4344

4.71 out of 5 stars ( 7 )

Estimated Ship Date: Today

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Chevy LS Cylinder head, 210cc Cathedral port Intake Runner, 64cc Chamber, 2.02 Intake Valve 1.6 Exhaust Valve, 3.898+ bore sizes, Max .660 Lift, Each

Part Number: SUM-162LS210CATH

3.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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