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2003 Engines & Components

Individual Parts

Results 301 - 325 of 2000 +

Main Studs, Chromoly, Hex Head, 2-Bolt, Chrysler, Dodge, 5.7/6.1L, Kit

Part Number: ARP-244-5400

5.0 out of 5 stars ( 7 )

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Timing Cover, Cast Aluminum, 1-Piece, With Seal, Cover Gasket and Cam Sensor Cover Plate, Natural, Chevy LS1, LS2, LS3, LS6, Each

Part Number: SUM-G6319

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Oil Pump, Wet Sump Style, High-Volume, High-pressure, Chrysler, Dodge, 5.7L, 6.1L, Each

Part Number: MEL-10342HV

3.0 out of 5 stars ( 2 )

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This product may not be eligible for select promotional offers

Summit Factory Performance Stage 1 LS Circle Track Cam, 225/236 110+1, .525/.525 Lift, Vortec LS1 LS2 LS6 LS3 LQ4, Summit's version of the ASA Cam

Part Number: SUM-8700

4.0 out of 5 stars ( 3 )

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Rod Bearings, Standard Size, Bi-metal, Silicon Aluminum, Large Journal, Chevy, Small Block, Set of 8

Part Number: KGB-CR807SI

4.86 out of 5 stars ( 14 )

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Cam Bearings, Direct Replacement, Steel Backed Babbitt, Chevy, 4.8, 5.3, 6.0, 6.2, 7.0L, 2nd Design, Set

Part Number: CLE-SH2125S

4.35 out of 5 stars ( 43 )

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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 )

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Pro LS Rotating Assembly, 325 Cid., 3.780 bore, Standard 3.622 stroke, 24X, 6.125 rod, 7cc dish, 9.7:1 @ 61cc, 9.3:1 @ 65cc, File-Fit Rings, H Bearing

Part Number: SUM-R2436L7807

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Chevy LS 4340 Forged Steel Crankshaft, 4.000 stroke, 24X Reluctor, Lightened, Nitride Hardened, Narrowed Rod Bearings Req.

Part Number: SUM-180LS400024

3.0 out of 5 stars ( 2 )

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Rod Bearings, Race Series, CT-1 Coated, Tri-Metal, Chevrolet, Small Block, LS, Set of 8

Part Number: PEB-8B663HC-STD

3.0 out of 5 stars ( 1 )

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Valve Springs, Beehive, 1.290 in. O.D., 375 lbs./in. Rate, 1.200 in. Coil Bind Height, Set of 16

Part Number: NAL-19420455

3.75 out of 5 stars ( 4 )

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Connecting Rod, 4340 Steel, H-Beam, 5.933 in. Length, Bushed, Cap Screw, Ford, 4.6, 5.0L, Set of 8

Part Number: MAN-14042R-8

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Camshaft Set, Hydraulic Roller, Adv. Duration 276/276, Lift .580/.580, Lobe Sep. 114, Ford 4.6L/5.4L 2V, Pair

Part Number: TFS-51802002

1.0 out of 5 stars ( 1 )

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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

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Valve Cover Assembly, Left side, New Design, 09' Prior

Part Number: ADO-12570427

5.0 out of 5 stars ( 2 )

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Crate Engine, Remanufactured, Long Block, Assembled, GM, 6.0L, 4WD, Each

Part Number: VRE-VCTF4WD

5.0 out of 5 stars ( 2 )

Estimated Ship Date: May 15, 2026 if ordered today

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Estimated Ship Date: May 15, 2026 if ordered today

This product may not be eligible for select promotional offers

Accessory Drive Systems, LS Chevy S-Drive Serpentine Pulley Drive Systems, Power Steering Pump, Polished Pulleys, Chevrolet, Small Block LS, Kit

Part Number: EMS-MS117-90BP

5.0 out of 5 stars ( 2 )

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Pro LS 2618 Forged Piston, 4.000 bore, 1.110 C.H., 8cc dish, 4.000in. Stroke, 6.125 Rod, NA/Boost/Nitrous, Cathedral/Rect., 6.0 LY6 LQ4 LQ9, Set of 8

Part Number: SUM-1109274000-8

5.0 out of 5 stars ( 2 )

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Valve, Exhaust, OEM Replacement, 1.55 in. Diameter, .313 in. Stem, 4.920 in. Length, GM/Chevy, GenIII/IV LS, Each

Part Number: MEL-V1935

4.71 out of 5 stars ( 7 )

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This product may not be eligible for select promotional offers

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 )

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Camshaft, BTR, Stage 2 Truck V2, 212 int./218 exh. Duration, 0.553 in./0.553 in. Lift, 111 LSA, 3-Bolt, 4.8L, 5.3L, 6.0L, Each

Part Number: BTC-BTR31218110

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Rocker Arms, GM Genuine Parts, Roller Fulcrum, Pedestal, 1.7 Ratio, Steel, Exhaust Side, Buick, Cadillac, Chevrolet, GMC, Hummer, Pontiac, Saab, Each

Part Number: ADO-12681275

5.0 out of 5 stars ( 1 )

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Pistons, Forged, Flat, 4.030 in. Bore, 350 Chevy, Set of 8

Part Number: DMS-8700-4030

5.0 out of 5 stars ( 8 )

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Cylinder Head, GenX® 220, Fast As Cast®, Assembled, 65cc CNC Chambers, Titanium Retainers, GM LS2, Each

Part Number: TFS-3061T002

5.0 out of 5 stars ( 3 )

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Pro LS Piston and Rod Kit, 326 Cid, 3.785 bore, Standard 3.622 stroke, 6.125 rod, 2cc dome, 10.9:1 @ 61cc, 10.4:1 @ 65cc, File-Fit Rings

Part Number: SUM-PR36L7852

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