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2003 Engines & Components

Individual Parts

Results 701 - 725 of 2000 +

Oil Cooler Bypass Block-Off Plate, Billet Aluminum, Clear Anodized, With Single 90* 1/8 in. NPT Ports, Chevy, LS, Each

Part Number: SUM-121028

5.0 out of 5 stars ( 3 )

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Cylinder Head, GenX® 225, CNC Competition Ported, Assembled, 65cc CNC Chambers, GM LS2, Each

Part Number: TFS-30610001-C02

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Summit Precision High-Tensile Tri-Metal Alloy Racing Main Bearings, Chevy LS, .001 Extra Clearance, Racing 270 Deg. Oil groove, set

Part Number: SUM-7298HXS

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Cam and Lifter kit, 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 Each

Part Number: SUM-K8727R1

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Rocker Arm, Non-roller, 1.7 Ratio, Steel, Natural, Chevrolet, Small Block LS, Each

Part Number: BTC-RKRLS17ER1

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Crank Hub, Internal Engine Balance, Single Key, Chevy, Small Block, 4.8L LS, 5.3L LS, 6.2L LS, Each

Part Number: ATI-916430M

5.0 out of 5 stars ( 4 )

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Camshaft Kit, Pro LS Vortec Truck Swap, Hydraulic Roller Tappet, 210/218 Dur.@ .050 112 LSA +1 Adv. Lift .500/.500, Chevy GM, LS/LSX, Gen III/IV, Each

Part Number: SUM-8712-1

5.0 out of 5 stars ( 2 )

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Accessory Brackets, LS Engine, Cast Aluminum, Natural Finish, Alternator, Power Steering, Chevy, LS, 4.8-7.0L, Kit

Part Number: HLY-20-155

4.33 out of 5 stars ( 3 )

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Pistons, Hypereutectic, Flat, 101.6mm Bore, 1.5mm, 1.5mm, 3.0mm Ring Grooves, Chevy, V8, Set of 8

Part Number: UEM-3517HC-STD

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Rod Bearings, Stock Size, XP-Series, Tri-Metal, Large Journal, Chevy, Small Block, Set of 8

Part Number: KGB-CR807XPDSTDX

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Pro LS 2618 Forged Pistons. 3.780 bore, 1.299 C.H., 2cc dome, Std. Stroke, .6.125 Rod, NA/Boost/Nitrous, Coated, 4.8L 5.3L LS Vortec Truck, Set of 8

Part Number: SUM-2999273780-2

3.83 out of 5 stars ( 6 )

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Valve Cover Fasteners, Holley EFI, Tall LS Valve Cover Bolts, Polished, Aluminum, Hex Head, 6mm x 1.0 Thread, Hardware, 8-piece, Chevy, 4.8-7.0L, Set

Part Number: HLY-561-134

5.0 out of 5 stars ( 1 )

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Idler Pulleys, GM OE, Serpentine, Steel, Black, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Saab, Each

Part Number: ADO-12669569

5.0 out of 5 stars ( 3 )

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Valve Covers, Aluminum LS, Center and Perimeter Bolt, Tall, Finned, Cast Aluminum, Black Satin, Two-Piece, Chevy, LS, 4.8-7.0L, Pair

Part Number: HLY-241-182

2.5 out of 5 stars ( 2 )

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Rod Bearing, H Series, .001 in Thinner, TM-77, Chevy, Small Block, Each

Part Number: CLE-CB663HXND

5.0 out of 5 stars ( 1 )

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Crate Engine, Remanufactured, Long Block, Assembled, GM, 5.3L, RWD, Each

Part Number: VRE-VCT82WD

2.67 out of 5 stars ( 3 )

Estimated Ship Date: Mar 30, 2026 if ordered today

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Estimated Ship Date: Mar 30, 2026 if ordered today

Lifters, Hydraulic Roller, 0.842 in. O.D., Horizontal Link Bars, Chevrolet, Set of 16

Part Number: CXM-J-2126LSR

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Pro LS CT1, 234/248 Duration, 113.5 LSA + 3.5 Adv, .550I/.550E Lift, 3-Bolt, Compatible with SUM-174002 LS6 Springs. 5.3, 5.7, 6.0, 6.2, 7.0

Part Number: SUM-8735R1

5.0 out of 5 stars ( 2 )

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Cylinder Head Bolts, High Performance, Hex Head, Chrysler, 318, 360, Magnum, Stock Magnum Heads, Kit

Part Number: ARP-144-3604

5.0 out of 5 stars ( 4 )

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Cam Bearings, High Performance, Fluoropolymer Coated, Bi-metal, Chill Cast Micro Babbitt, 1st Design, Chevrolet, 4.8L/5.3L/5.7L/6.0L LS, Kit

Part Number: DUR-CHP-10T

5.0 out of 5 stars ( 2 )

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Valve Spring, Standard, Dual, Stock Replacement, Each

Part Number: DCC-68277306AA

3.0 out of 5 stars ( 2 )

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Timing Chain and Gear Set, Link Belt Style, Ford Modular V8, 4.6L, 2V, Kit

Part Number: SME-7075

5.0 out of 5 stars ( 2 )

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Crankshaft, 1-Piece Seal, Internal Balance, Forged 4340 Steel, 4.000 in. Stroke, Chevy, 5.7, 6.0L, Each

Part Number: ESP-434640006100

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Rocker Arms, Aluminum, Pedestal-Mount Roller Rockers, 1.7 Ratio, M8 Bolts, LS Engines, Set of 16

Part Number: PRO-69467

2.67 out of 5 stars ( 3 )

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Lifters, Street Series, Hydraulic Roller, Street Series, Vertical Bar, Chevy, Gen III Small Block, Set of 16

Part Number: HRS-91166

5.0 out of 5 stars ( 1 )

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