2003 Parts and Accessories

Summit Chevy LS 4340 Forged Steel Crankshaft, 4.000 stroke, 58X Reluctor, Gun-drilled and Lightened, Nitride Hardened, Narrowed Rod Bearings Req.

Part Number: SUM-180LS400058

5.0 out of 5 stars ( 1 )

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

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Camshaft Thrust Plate, Solid Type, Steel, Includes Four Bolts, Chevy GM, LS/LSX, Gen III/IV, Each

Part Number: SUM-150106

4.53 out of 5 stars ( 70 )

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

Brake Launch Control, Chevy LS, 2-Step Launch Control, Each

Part Number: MSD-8733

4.71 out of 5 stars ( 86 )

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

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HP Tuner, MPVI4, Pro Feature Set, 4 Universal Credits, Kit

Part Number: HPT-M04-000-04

5.0 out of 5 stars ( 1 )

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

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Tire, Star Series, 235/75-15, Radial, 3.125 in. Wide Whitewall, T Speed Rating, Each

Part Number: COK-737115

5.0 out of 5 stars ( 4 )

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

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Wheel, 61C S/S Super Sport, Steel/Aluminum, Chrome, 15 in. x 8 in., 5 x 4.75 in. Bolt Circle, 4.250 in. Backspace

Part Number: CRR-61C583442

4.71 out of 5 stars ( 42 )

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

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Main Bolts, 6-bolt Mains, Flanged Hex, Chevy GM, LS/LSX, Gen III/IV, Kit

Part Number: SUM-910229

4.57 out of 5 stars ( 14 )

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

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Cylinder Head, Enforcer, Aluminum, Assembled, 64cc Chamber, 210cc Intake, Cathedral Port, Chevrolet, LS, Each

Part Number: AFR-1501

5.0 out of 5 stars ( 2 )

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

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Valve Spring Kit, Dual Valve Springs, Chromoly Retainers, Locks, Seals, Chevy, LS, Kit

Part Number: TFS-2500286P

3.36 out of 5 stars ( 14 )

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

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Performance Meter, Monitor, Gauge, Insight CTS3, OBDII, 5 in. Color Touch Screen, Each

Part Number: EGE-84130-3

4.17 out of 5 stars ( 23 )

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

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Harmonic Balancer Bolt, 27mm 12-Point Head, 4.325 in. UHL, Chromoly, Black Oxide, LS Gen. III/IV, Chevrolet, 4.8L, 5.3L, 5.7L, 6.0L, 6.2L, Each

Part Number: ARP-234-2503

4.95 out of 5 stars ( 178 )

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

Gen. 3/4 Chevy LS Rocker Arm Trunnion Upgrade Kit, Bronze Bushing, Retrofit, Rectangle and Cathedral Port Rockers, Set of 16

Part Number: SUM-141560

4.33 out of 5 stars ( 70 )

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

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Engine Management Systems, Terminator X MAX, 8-EV1 Injectors, 8-Coils, Sensors, Trans and Tuner Controller, Chevy, LS, 5.7L, 1x Cam, 24x Crank, Kit

Part Number: HLY-550-916

4.64 out of 5 stars ( 11 )

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

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Camshaft, Hydraulic Roller, OE Roller, Street/Strip Use, 212 Intake Duration, 0.498 in./0.498 in. Lift, Chevrolet, Small Block LS, Each

Part Number: BTC-S0393

5.0 out of 5 stars ( 1 )

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

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Lifters, Hydraulic Roller, Lifter Trays, Chevy, LS, Kit

Part Number: SUM-HTLSKIT1

4.52 out of 5 stars ( 25 )

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

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Intake Manifold, Fuel-Injected, Polymer, Black, Chevy, LS1, LS2, LS6, Each

Part Number: FST-146302B

4.29 out of 5 stars ( 14 )

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

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

Part Number: ATI-917266

4.84 out of 5 stars ( 25 )

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

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Pro LS Valve Springs, LS6 Style, 0.550 Max Lift, Single Beehive, 1.270 in. O.D., 375 lbs./in. Spring Rate, 1.800 in. Installed Height, Set of 16

Part Number: SUM-174002

4.78 out of 5 stars ( 27 )

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

Engine Dolly, Steel, Black Powdercoat, Wheels Included, GM LS 99-on 4.8, 5.3, 5.7, 6.0, 6.2, 7.0, Each

Part Number: SUM-910058

4.01 out of 5 stars ( 83 )

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

Supercharger, Roots Style, TVS1320, Serpentine, Black Powdercoated, Intercooler, Toyota, Kit

Part Number: MPS-011334003BL

5.0 out of 5 stars ( 1 )

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

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Rocker Arms, Trunnion Upgrade, Assembled, Cast Steel, 1.7 Ratio, Straight Body, Cathedral Port, Chevy, LS1, LS2, LS6, LQ4, LQ9, Set of 16

Part Number: SUM-141556

4.06 out of 5 stars ( 17 )

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

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Running Boards, PowerSteps, Aluminum, Black Anodized, Ford, Kit

Part Number: MPA-75104-01A

5.0 out of 5 stars ( 2 )

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

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Camshaft Bearing Installation and Removal Tool, Cam Bearing Install, Chevy, LS, Each

Part Number: SUM-900131

4.94 out of 5 stars ( 170 )

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

Head Gaskets, Multi-Layer, 3.910 in. Bore, 0.051 in. Compressed Thickness, LS Engines, Pair

Part Number: BTC-BTR98544

4.88 out of 5 stars ( 8 )

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

Fuel Filter, Pressure Regulator, Inline, 58 psi, 5 Micron, -6 AN Threads, Fuel Injection, Chevy, LS, 5.7L, Corvette, Each

Part Number: SUM-230151

3.69 out of 5 stars ( 29 )

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