2003 Engines & Components

Timing Chain and Gears, Single Roller, Steel Sprockets, Chevy, GMC, Small Block LS, Set

Part Number: MEL-3-3SRH60SA

4.04 out of 5 stars ( 23 )

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

Pro LS Valve Springs, Drop in, 0.630 Max Lift, Single Beehive, 1.3 in. O.D., 340 lbs./in. Spring Rate, 1.8 in. Installed Height, Set of 16

Part Number: SUM-174005

5.0 out of 5 stars ( 3 )

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

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Camshaft Kit, Pro LS Vortec Truck Swap, Hydraulic Roller Tappet, Advertised Duration 278/287, Lift .523/.524, Chevy GM, LS/LSX, Gen III/IV, LS, Kit

Part Number: SUM-8701-1

4.2 out of 5 stars ( 5 )

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

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Rod Bearings, XP-Series, Performance, Narrow, Stock Size, Tri metal, Chevy, Big Block, Set of 8

Part Number: KGB-CR808XPN

4.71 out of 5 stars ( 7 )

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

Stage 3 Pro LS Cam - Extra Valve Clearance Version, 230/242 113+3, .625/.605 Lift, Excellent power and torque, 3-bolt, 5.3, 5.7, 6.0, 6.2, 7.0L

Part Number: SUM-8710R1

5.0 out of 5 stars ( 3 )

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

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Lifter, Hydraulic Flat Tappet, Each

Part Number: MEL-JB-2011

4.6 out of 5 stars ( 10 )

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

Main Bearings, Race Series, Tri-Metal, 3/4 Groove, Standard Size, Chevrolet, LS, Set of 5

Part Number: PEB-5M7298H-STD

Not Yet Reviewed

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

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Oil Filter, Performance Gold, Canister, 5.88 in. Tall, 3.69 in. Diameter, 13/16 in.-16 Thread, Bypass Relief, 11-17 psi, Anti-Drainback, Spin-On, Each

Part Number: KNN-HP-3003

4.64 out of 5 stars ( 11 )

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, 8cc dish, 11:1 @ 65cc, 10.4:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R24400008

Not Yet Reviewed

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

Oil Pans, Retrofit, LS Engine Swap, Rear Sump, Wet Style, 5.9 Quarts, Aluminum, Black, Buick, Chevy, Ford, GMC, Mercury, Oldsmobile,Pontiac, Each

Part Number: HLY-302-3BK

5.0 out of 5 stars ( 2 )

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

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Harmonic Balancer, Internal Balance, Steel, Black, Chevy, Small Block, Big Block W, Each

Part Number: FLU-620101

4.71 out of 5 stars ( 14 )

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

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Alternator Bracket, Upper/Lower Bracket, Billet Aluminum, Natural, Cylinder Head Mount, Driver Side High Mount, Chevy, LS, Kit

Part Number: ICB-551777

5.0 out of 5 stars ( 8 )

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

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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: Monday 2/16/2026 if shipped by air

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Cam Bolt, High Performance, Chromoly, Hex Head, m8 x 1.25 mm, LS Gen III, Kit

Part Number: ARP-134-1003

4.93 out of 5 stars ( 72 )

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

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: Monday 2/16/2026 if shipped by air

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Main Bearings, P-Series, 1/2 Groove, Standard Size, Tri-Metal, Chevy, LS, of 5

Part Number: CLE-MS2199P

4.07 out of 5 stars ( 15 )

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

Main Bearings, MA-Series, Bi Metal, Standard Size, Chevy, 4.8, 5.3, 5,7, 6.0L, Set of 5

Part Number: SLP-7298MA

4.5 out of 5 stars ( 12 )

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

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: Monday 2/16/2026 if shipped by air

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Connecting Rods, 4340 Steel, H-Beam, 6.125 in., Cap Screw, Bushed, Chevy, Small Block, LS, Set of 8

Part Number: ESP-6125O3DL19

4.6 out of 5 stars ( 5 )

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

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Crankshaft, 4140 Steel, Forged, 4.000 in. Stroke, Chevy LS1, 24-Tooth Reluctor, Each

Part Number: ESP-534640006100

Not Yet Reviewed

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

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Pro LS 2618 Forged Piston, 4.030 bore, 1.326 C.H., 2cc Flat, Std. Stroke, Full Float Rod, NA/Boost/Nitrous, Cathedral/Rect. 6.0L LY6 LQ4 LQ9, Set of 8

Part Number: SUM-3269434030-2

5.0 out of 5 stars ( 2 )

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

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Pro LS Truck Torkinator. 200/205 Dur., 113+4, .550/.550 Lift, 3-bolt, 4.8 5.3 5.7 6.0 6.2, 7.0 Vortec, L59 LR4 LM7 L33 LS2 L92 L96 LY6 LQ4 LQ9 , Each

Part Number: SUM-8727R1

5.0 out of 5 stars ( 7 )

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

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Engine block coolant and oil plug kit, Threaded Engine Block Oil/Coolant passage Plugs, Brass/Steel, Oil Plug and barbell, Chevy, GM LS GenIII/IV, Kit

Part Number: SUM-G1584

4.73 out of 5 stars ( 30 )

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

Connecting Rods, SIR I-Beam, Forged 5140 Steel, 6.100 in. Length Center To Center, Chevrolet, Small Block LS, Set of 8

Part Number: ESP-SIR6100MLW

Not Yet Reviewed

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

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Main Bearing Set, CHEVROLET LS series L20, LS1/2/4/6 - pMaxKote

Part Number: KGB-MB5013XPC

Not Yet Reviewed

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

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