2003 Engines & Components

Oil Pump, High Volume, Standard Replacement, Includes Gasket, Cadillac, Chevrolet, GMC, Pontiac, Hummer, 5.3/6.0/6.2L, V8, Each

Part Number: MEL-M365HV

4.38 out of 5 stars ( 8 )

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

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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 )

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

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Crate Engine, Remanufactured, Long Block, Assembled, GM, 5.3L, 4WD, Each

Part Number: VRE-VCT84WD

3.67 out of 5 stars ( 6 )

Estimated Ship Date: Mar 30, 2026 if ordered today

• Core Charge $445.00
• Drop Ship
• Free Shipping
• Special Order

Replica Block, Steel, Natural, Includes Hardware, Chevy, LS, Each

Part Number: SUM-774001

4.56 out of 5 stars ( 9 )

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

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Rear Main Seal Cover, Aluminum, Natural, Buick, Cadillac, Chevy, GMC, Hummer, Pontiac, Saab, Kit

Part Number: RNB-635-518

3.89 out of 5 stars ( 9 )

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

Accessory Drive Systems, LS Mid-mount, Serpentine, Alternator, Water Pump, Clockwise, Power Steering, AC, SD-7, Polished Finish, Chevy, 4.8-7.0L, Kit

Part Number: HLY-20-185P

5.0 out of 5 stars ( 1 )

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

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Rocker Arm Bolts, Pro Series, M8 x 1.25mm Thread, 2.560 in. Effective Stud Length, Kit

Part Number: ARP-234-7207

4.8 out of 5 stars ( 15 )

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

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Harmonic Balancer, Crank Pulley, 25 Percent Underdrive, SFI, Internal Balance, Short Spacing, 5.7, 6.0, 6.2L, Each

Part Number: SUM-C2503

4.88 out of 5 stars ( 17 )

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

• Free Shipping

Piston Rings, Plasma-moly, 4.000 in. Bore, 1.5mm, 1.5mm, 3.0mm Thickness, 8-Cylinder, Set

Part Number: HSN-2M4860

4.75 out of 5 stars ( 4 )

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

Connecting Rods, H-beam, Forged 4340 Steel, Magnafluxed, 6.125 in. Length Center To Center, Chevrolet, Small Block LS, Set of 8

Part Number: BTC-S0368

5.0 out of 5 stars ( 2 )

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

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Valve Covers, Aluminum LS, Center and Perimeter Bolt, Tall, Chevy Logo, Cast Aluminum, Polished, Two-Piece, Chevy, LS, 4.8-7.0L, Pair

Part Number: HLY-241-176

3.83 out of 5 stars ( 6 )

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

• Free Shipping

Pistons, Pro Tru Street Pistons, 4.030 in. Bore, Forged, Dome, Please Verify Piston Pin Diameter Before Ordering, Chevrolet, LS, Kit

Part Number: WIS-PTS523A3

4.75 out of 5 stars ( 4 )

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

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1997-03 GM Gen.3 LS Head Bolts, Zinc Plated, Steel, Hex, Torque To Yield, Kit

Part Number: SUM-910210

3.86 out of 5 stars ( 14 )

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

Connecting Rod Bolts, Pro Series, 2000 Alloy, Chevy, LS, Kit

Part Number: ARP-234-6301

5.0 out of 5 stars ( 12 )

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

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Cam and Lifter kit, Stage 2, LS Truck Swap Cam, 218/227 112+2, .522/.524 Lift, 3-bolt, 4.8, 5.3, 5.7, 6.0, 6.2, Each

Part Number: SUM-K8701R1

Not Yet Reviewed

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

• Free Shipping

Engine Oil Dipstick, Midnight Series Anchor-Tight Locking Flexible, Passenger Side, Billet Aluminum, Black Anodized, Chevy, SB, LS, Car, Each

Part Number: LOK-X1220227

3.67 out of 5 stars ( 3 )

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

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Valve Covers, Center and Perimeter Bolt, Tall, Chevy Logo, Cast Aluminum, Red Gloss, Two-Piece, Chevy, LS, 4.8-7.0L, Pair

Part Number: HLY-241-179

4.33 out of 5 stars ( 3 )

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

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Cam and Lifter kit, Pro SBC Stage 4 Hyd. Roller Cam, 224/232 Dur. 112 LSA + 2 Adv, .550/.540 1.5 Ratio, 2000-6500 RPM Range, 87-02 Gen 1 Roller Block

Part Number: SUM-K8803

4.0 out of 5 stars ( 2 )

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

• Free Shipping

Pro LS 2618 Forged Piston, 4.030 bore, 1.299 C.H., 12cc Dish, Std. Stroke, 6.125 .927 Rod, NA/Boost/Nitrous, Cathedral/Rect. 6.0L LY6 LQ4 LQ9,Set of 8

Part Number: SUM-299927403012

5.0 out of 5 stars ( 1 )

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

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Camshaft Kit, Pro LS, Hydraulic Roller Tappet, Advertised Duration 288/296, Lift .625/.605, Chevy GM, LS/LSX, Gen III/IV, Each

Part Number: SUM-8709-1DS

Not Yet Reviewed

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

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Pulley Kit,serpentine,Chevy LS ,Aluminum,AC,Power steering-Plastic Reservoir,170A alternator,Gloss black

Part Number: EMS-MS118-90BK

Not Yet Reviewed

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

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Lifters, Hydraulic Roller, Street Series, Vertical Bar, Chrysler, Small Block LA, Magnum, Set of 16

Part Number: HRS-91764

4.33 out of 5 stars ( 3 )

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

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Harmonic Balancer, Internal Balance, Steel, Black, Toyota, 2JZ, 1JZ, Each

Part Number: FLU-840801

5.0 out of 5 stars ( 4 )

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

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Rod Bearing, H Series, .010 in Crankshaft Undersize, TM-77, Chevy, Small Block, Each

Part Number: CLE-CB663HN10

4.6 out of 5 stars ( 10 )

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

Oil Pans, Engine Swap, Low Profile, Aluminum, 4.250 in. Stroke, 5.5 Quarts, Chevy, LS, 4.8L, 5.3L, 5.7L, .0L, 6.2L, Kit

Part Number: TSN-81074

2.33 out of 5 stars ( 3 )

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

• Free Shipping