2003 Engines & Components

Rocker Arm Trunnion Upgrade Kit, Upgrade, GM, Gen. 3/4 LS Cathedral or Rectangle Port Rockers, Set of 16

Part Number: CCA-13702-KIT

4.49 out of 5 stars ( 79 )

Estimated Ship Date: Tomorrow

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Engine Accessory Brackets, Serpentine, Alternator Bracket, Power Steering Bracket, Idler Bracket, Billet Aluminum, Black Anodized, LS, Kit

Part Number: SUM-340820

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

Cylinder Head Fasteners, 12-point Style, Stud, Mixed Length Lower, Early LS Style, Custom Age 625-Plus Material, 270,000 psi, Mixed Finishes, Kit

Part Number: ARP-234-4344

4.71 out of 5 stars ( 7 )

Estimated Ship Date: Tomorrow

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Piston Rings, Plasma-moly, 4.000 in. Bore, 1.2mm, 1.5mm, 2.5mm Thickness, 8-Cylinder, Set

Part Number: HSN-2M5170

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Tomorrow

Pulley Kit, Performance Ratio, Tru Trac Serpentine System, Aluminum, Polished, Chevy, Kit

Part Number: BSP-13450

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Mar 2, 2026 if ordered today

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Pro LS 2618 Forged Piston, 4.005 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-2999274005-2

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Pro LS 2618 Forged Pistons. 3.780 bore, 1.326 C.H., 2cc dome, Std. Stroke, .945 pin Press or Float, NA/Boost/Nitrous, Coated, 4.8L 5.3L Vortec Truck

Part Number: SUM-326945780-2P

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Cam and Lifter kit, Stage 2 Pro LS Cam. 226/238 113+3, .600/.600 Lift, 3-bolt, 4.8, 5.3, 5.7, 6.0, 6.2, 7.0, LS1,2,3,6,7, LSA LQ4 LQ9 LS9 LS4 LY6

Part Number: SUM-K8707R1

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Cam and Lifter kit, Stage 3 Pro LS Truck Swap Cam, 222/232 112+5, .550/.550 Lift, 3-bolt, 4.8, 5.3, 5.7, 6.0, 6.2L Each

Part Number: SUM-K8713R1

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Oil Filter, Performance Gold, Canister, 5.72 in. Tall, 3.66 in. Diameter, 3/4 in.-16 Thread, Bypass Relief, 8-11 psi, Anti-Drainback, Spin-On, Each

Part Number: KNN-HP-3001

4.81 out of 5 stars ( 83 )

Estimated Ship Date: Tomorrow

Cam Bearings, Bi Metal, Chevy, 4.8, 5.3, 5.7, 6.0L, 1st Design, Kit

Part Number: DUR-CH-10

4.41 out of 5 stars ( 27 )

Estimated Ship Date: Tomorrow

Cylinder Head Fasteners, Dart LS Next,12-point Head Style, Stud, Black Oxide, Kit

Part Number: ARP-234-4341

4.33 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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Pistons, Hypereutectic, Flat, 3.780 in. Bore, Chevy, GMC, Set of 8

Part Number: SLP-H855CP

4.88 out of 5 stars ( 8 )

Estimated Ship Date: Tomorrow

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SUM-8728 Pro LS Big Truck Torkinator Level 1 Cam Kit, Beehive Springs, 212/218 Dur., 110 + 3, .600/.585 Lift, 3 Bolt, 4.8, 5.3, 6.0, 6.2 Vortec

Part Number: SUM-8728-1-BHV

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Camshaft, Hydraulic Roller, Advertised Duration 283/286, Lift .585/.585, Lobe Sep. 112, GM LS, Each

Part Number: TFS-30602003

4.17 out of 5 stars ( 12 )

Estimated Ship Date: Tomorrow

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Pro LS 2618 Forged Pistons. 3.785 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-2999273785-2

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Camshaft Set, Hydraulic Roller, Adv. Duration 262/264, Lift .550/.550, Lobe Sep. 112, Ford 4.6L/5.4L 2V, Pair

Part Number: TFS-51802001

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Harmonic Balancer Bolt, Steel, Flanged Hex, Coarse Thread, Natural, Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Pontiac, Saab, Each

Part Number: ADO-12557840

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

Oil Pan, Drag Race, Steel, Red, 7 qt., Chevy, Engine Swap, 2 Pc Seal, Small Block V8, RWD/4WD, Each

Part Number: HAM-1099

4.08 out of 5 stars ( 24 )

Estimated Ship Date: Tomorrow

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Timing Chain and Gears, Single Roller, Steel Sprockets, Chevy, 5.7L LS, 6.0L LS, Kit

Part Number: CLO-9-3658TX3

4.46 out of 5 stars ( 13 )

Estimated Ship Date: Tomorrow

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Harmonic Balancer, OEM Replacement, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Saab, 4.8, 5.3, 6.0, 6.2L

Part Number: PBB-PB1190N

4.83 out of 5 stars ( 6 )

Estimated Ship Date: Tomorrow

Pro LS 4340 Piston and Rod Kit, 364 Cid., 4.000 bore, 3.622 stroke, 6.098 rod, 12cc dish, 9.6:1 @ 65cc, 9.2:1 @ 70cc, File-Fit Rings

Part Number: SUM-PR3600012

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Pro LS 2618 Forged Piston, 4.040 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-1109274040-8

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Piston Wrist Pins, H-13 Tool Steel, 0.927 in. Diameter, 2.250 in. Length, 0.215 in. Wall Thickness, 135 grams, Set of 8

Part Number: SUM-S719-8

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Oil Pan, Stock, Aluminum, Natural, Cadillac, Chevrolet, GMC, Hummer, 4.8L, 5.3L, 6.0L, Each

Part Number: RNB-264-135

4.6 out of 5 stars ( 10 )

Estimated Ship Date: Tomorrow

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