2003 Parts and Accessories

Exhaust Manifold, Blackheart, LS Swap, Stainless Steel, Natural, Universal, Pair

Part Number: HOK-8503HKR

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Head Gasket, MLS, 4.100 in. Bore, .070 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5489-070

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Flywheel, Billet Steel, 168-Tooth, Internal Engine Balance, 27.000 lbs., 1-Piece Rear Main Seal, SFI 1.1, Chevy Gen III/IV (LS-based engines), Each

Part Number: RAM-1550

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Pro LS Piston and Rod Kit, 326 Cid., 3.785 bore, Standard 3.622 stroke, 6.125 rod, 7cc dish, 9.7:1 @ 61cc, 9.3:1 @ 65cc, File-Fit Rings

Part Number: SUM-PR36L7857

Not Yet Reviewed

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Cam Bearings, Performance, Bi-metal, Fluoropolymer Lead-Based Micro Babbitt, Chevy LS, 3rd Design, Set of 5

Part Number: KGB-CS5171HPT

Not Yet Reviewed

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Electric Drive Kit, Water Pump, Chevy, Chrysler, Dodge, Ford/Plymouth, Kit

Part Number: MOR-63750

4.07 out of 5 stars ( 28 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Pro LS Piston and Rod Kit, 330 Cid., 3.810 bore, Standard 3.622 stroke, 6.098 rod, 7cc dish, 9.8:1 @ 61cc, 9.4:1 @ 65cc, File-Fit Rings

Part Number: SUM-PR368107

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Oil Pump and Pickup Assembly, High-Volume, Chevy, Small Block, Kit

Part Number: MOR-22134

4.0 out of 5 stars ( 9 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Pistons, Dish, Competition Series, Forged Aluminum, 4.070 in. Bore, -11.00cc Head Volume, Chevy, LS, Set of 8

Part Number: DPP-11589-R1-8

Not Yet Reviewed

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Camshaft Kit, Pro LS, Hydraulic Roller Tappet, Advertised Duration 283/297, Lift .625/.605, Chevy GM, LS/LSX, Gen III/IV, Each

Part Number: SUM-8711-1DS

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Pro LS Piston and Rod Kit, 330 Cid., 3.810 bore, Standard 3.622 stroke, 6.098 rod, 2cc dome, 11:1 @ 61cc, 10.4:1 @ 65cc, File-Fit Rings

Part Number: SUM-PR368102

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Pro LS Piston and Rod Kit, 325 Cid, 3.780 bore, Standard 3.622 stroke, 6.125 rod, 2cc dome, 10.9:1 @ 61cc, 10.3:1 @ 65cc, File-Fit Rings

Part Number: SUM-PR36L7802

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Oil Filter Relocation Kit, Single Filter, 3/4-16 in. Filter Threads, Various Engine Threads, Kit

Part Number: DER-15748

4.91 out of 5 stars ( 11 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Summit Precision High-Tensile Tri-Metal Alloy Racing Rod Bearings, SBC/LS 2.100 pin, .837 width, Standard Clearance, set

Part Number: SUM-663HS

Not Yet Reviewed

Estimated Ship Date: Monday 2/16/2026 if shipped by air

Valve Spring Compressor, Cylinder Head On, Steel, Zinc Plated, Chevrolet LS, Dodge V10, Each

Part Number: LSM-SC-167

4.73 out of 5 stars ( 15 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Head Gasket, 3.910 in. Bore, .040 in. Compressed Thickness, Chevy, LS, 5.7, Each

Part Number: CGT-C5475-040

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

Flexplate, 168-Tooth, SFI 29.2, GM, LS-1, 6 Bolt Crank, Each

Part Number: MEZ-FP319

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Pistons, Forged, Flat, 4.040 in. Bore, 3.750 in. Stroke, 5.700 in. Rod Length, 383 Chevy, Set of 8

Part Number: DMS-8710-4040

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Pro LS Rotating Assembly, 365 Cid., 4.005 bore, 3.622 stroke, 58x, 6.098 rod, 2cc Flat Top, 10.8:1 @ 65cc, 10.2:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R58360052

Not Yet Reviewed

Estimated Ship Date: Monday 2/16/2026 if shipped by air

Harmonic Balancer, SFI, Internal Balance, Steel, Clearcoated, Chrysler, 273, 318, 340, Each

Part Number: SUM-C4277

4.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Pro LS Rotating Assembly, 330 Cid., 3.810 bore, Standard 3.622 stroke, 24X, 6.125 rod, 2cc dome, 11:1 @ 61cc, 10.4:1 @ 65cc, File-Fit Rings, H Bearing

Part Number: SUM-R2436L8102

Not Yet Reviewed

Estimated Ship Date: Monday 2/16/2026 if shipped by air

Pro LS 4340 Rotating Assembly, 402 Cid., 4.000 bore, 4.000 stroke, 24X, 6.125 rod, 20cc dish, 9.7:1 @ 65cc, 9.3:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R244000020

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

Battery, Dry Cell, 12 V, Deep Cycle/Starting, 850 Cold Cranking Amps, Top Post, Each

Part Number: ODY-34R-PC1500T

4.64 out of 5 stars ( 14 )

Cannot be shipped Internationally if shipped by air

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Cylinder Head Studs, 12-Point, 8740 Chromoly, Black, 2003 and Earlier, Chevy, LS, Gen III/IV, Standard Diameter and Lengths, Kit

Part Number: SUM-900506

Not Yet Reviewed

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Pro LS 4340 Rotating Assembly, 360 Cid., 3.785 bore, 4.000 stroke, 24X, 6.125 rod, 5cc dish, 10.9:1 @ 61cc, 10.4:1 @ 65cc, File-Fit Rings, H Bearings

Part Number: SUM-R24407855

Not Yet Reviewed

Estimated Ship Date: Monday 2/16/2026 if shipped by air