2003 Engines & Components

Stage 4 Pro LS Cam 238/246 113+3, .625/.605 Lift, Maximum power version, 3-bolt 5.3, 5.7, 6.0, 6.2, 7.0, LS1 LS2 LS6 LS3 LS7 LSA LQ4 LQ9 LS9 LY6 LY5

Part Number: SUM-8709R1

5.0 out of 5 stars ( 4 )

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

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Cylinder Head, GenX® 280 HIP, CNC Competition Ported, Assembled, 280cc Ports, Titanium Retainers, 6-Bolt Pattern, GM LS3, LSX, Each

Part Number: TFS-3261T04-HC01

Not Yet Reviewed

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, 6.098 rod, 7cc dish, 9.7:1 @ 61cc, 9.3:1 @ 65cc, File-Fit Rings

Part Number: SUM-PR367807

5.0 out of 5 stars ( 2 )

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

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Connecting Rods, FSI I-Beam, Forged 4340 Steel, Shot-Peened, Floating, 6.125 in. Long, GM LS, Set of 8

Part Number: ESP-FSI6125O

4.88 out of 5 stars ( 8 )

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

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Lifters, Hydraulic Roller, Chevy, Set of 16

Part Number: CCA-850-16

3.6 out of 5 stars ( 30 )

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

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Pro LS 2618 Forged Piston, 4.030 bore, 1.299 C.H., 2cc Flat, Std. Stroke, 6.125 .927 Rod, NA/Boost/Nitrous, Cathedral/Rect. 6.0L LY6 LQ4 LQ9, Set of 8

Part Number: SUM-2999274030-2

5.0 out of 5 stars ( 6 )

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

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Oil Filter Relocation Kit, Single Filter, 96 in. Hose Length, Kit

Part Number: SUM-G4985-1

3.86 out of 5 stars ( 155 )

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

Alternator and Power Steering Brackets, Driver Side, Alternator Upper Mount, Power Steering Lower Mount, Billet Aluminum, Chevy, LS, Kit

Part Number: ICB-551519X-3

5.0 out of 5 stars ( 9 )

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

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Cylinder Head Studs, Custom Age, 12-Point Head, Dodge, Cummins Diesel, 24 Valve, Kit

Part Number: ARP-247-4204

4.0 out of 5 stars ( 2 )

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

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LS Cylinder Head, 5.3L Specific, 60cc Chamber, 2.000 Int. Valve, Permanent Mold A-356, Manganese Guides, Ductile Seats, PAC Springs, 21 4N Stainless

Part Number: SUM-LS210CATH60

Not Yet Reviewed

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

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Cylinder Head, Performer RPM, Aluminum, Assembled, 58cc, 176cc Intake Runner, Dodge, Jeep, 5.2, 5.9L, Each

Part Number: EDL-61775

4.6 out of 5 stars ( 5 )

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

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Cylinder Head Studs, Pro Series, 12-Point Heads, Ford, 6.0L Diesel, Kit

Part Number: ARP-250-4202

5.0 out of 5 stars ( 33 )

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

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Valve Springs, Single, Beehive, 1.260 in. O.D., 285 lbs./in. Spring Rate, 1.150 in. Coil Bind Height, Set of 16

Part Number: BTC-SP011-16

4.86 out of 5 stars ( 7 )

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

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Harmonic Balancer, Serpentine, Internal Balance, Aluminum/Steel, Black, SFI 18.1, Chevy, Pontiac, Each

Part Number: ATI-917303

5.0 out of 5 stars ( 6 )

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

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Oil Pan, Chevy LS, Aluminum, Rear Sump, Engine Swap, Kit

Part Number: NAL-19212593

4.46 out of 5 stars ( 145 )

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

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Chevy LS Cylinder head, 255cc Rectangle port Intake Runner, 67cc Chamber, 2.16 Intake Valve 1.6 Exhaust Valve, 4.000 + bore sizes, Max .600 Lift, Each

Part Number: SUM-162LS3255REC

2.0 out of 5 stars ( 2 )

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

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Cylinder Heads, LS3, Aluminum, 260cc Intake Runner Volume, 95cc Exhaust Runner Volume, 6 Bolt, Pair

Part Number: AFR-1840

5.0 out of 5 stars ( 2 )

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

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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: Monday 2/16/2026 if shipped by air

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Cylinder Head, GenX® 220, Fast As Cast®, Assembled, 64cc CNC Chambers, Titanium Retainers, GM LS1, Each

Part Number: TFS-3061T001

Not Yet Reviewed

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

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Valve Springs, Beehive Valve Spring Kits, Single, 0.625 in. Maximum Valve Lift, 1.285 in./1.020 in. Outer Spring O.D., Chevy, Small Block LS, Kit

Part Number: BTC-BTR-SK018

Not Yet Reviewed

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

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Lifter Guide, Hydraulic Roller Style, Plastic, Chevrolet, LS/LT, Non AFM/DOD Engines, Set of 4

Part Number: BTC-BTR95365-4

4.43 out of 5 stars ( 7 )

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

Oil Pump, Standard-Volume, Chevy, 4.8/5.3/5.7/6.0L, Each

Part Number: MEL-M295

4.85 out of 5 stars ( 13 )

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

Summit Chevy LS 4340 Forged Steel Crankshaft, 3.622 stroke, 58X Reluctor, Gun-drilled and Lightened, Nitride Hardened, Narrowed Rod Bearings Req.

Part Number: SUM-180LS362258

Not Yet Reviewed

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

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Harmonic Balancer, OEM Replacement, Cadillac, Chevy, Pontiac, LS, Each

Part Number: PBB-PB1117N

4.86 out of 5 stars ( 44 )

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

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Timing Chain, Single Roller, Chevy, LS2, Fits All Gen. 3/4 LS with Wet Sump oiling, Each

Part Number: SME-143012

4.72 out of 5 stars ( 47 )

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