2003 Holley Parts and Accessories

Engine Management Systems, Terminator X MAX, 8-EV1 Injectors, 8-Coils, Sensors, USB Tune Cable, Chevy, LS, 5.7L, 1x Cam, 24x Crank, Kit

Part Number: HLY-550-929T

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Engine Management Systems, Terminator X, Up to 8-EV6 Injectors, 8-Coils, Analog, O2 Sensor, Plug-and-Play, USB Tuning Cable, Ford, 4.6L, 5.4L, Kit

Part Number: HLY-550-1221

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Engine Management Systems, Terminator X MAX, 8-EV1 Injectors, 8-Coils, Drive-by-Wire, 3.5 in. Controller, Chrysler, Dodge, 5.7L, 6.1L, Non-VVT, Kit

Part Number: HLY-550-1420

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Fuel Injection Systems, Terminator X, Stealth 4150, 24X LS EFI, Four Injector, Throttle Body, Speed Density, Aluminum, Gold Chevy, 4.8-7.0L, Kit

Part Number: HLY-550-1022

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Weatherproof Connectors, Holley EFI, Hemi Cam Sensor Connector, Main Harness, Single-Pack, 3-pin, Female, Gray Plastic, with Pins, Seals, TPA, Each

Part Number: HLY-570-232

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Estimated Ship Date: Mar 5, 2026 if ordered today

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Weatherproof Connectors, Holley EFI, Hemi CTS Connector, Main Harness, APEX 2.8, 3-pin, Female, Black Plastic, with Pins, Seals, TPA, Each

Part Number: HLY-570-235

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Estimated Ship Date: Mar 4, 2026 if ordered today

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Intake Manifolds, LS 2x4, Throttle Body, Dual Flange, 1,500-7,000 RPM Range, Aluminum, Black Finish, Chevy, 4.8-6.0L, Cathedral Head, Each

Part Number: HLY-300-121BK

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Estimated Ship Date: Mar 4, 2026 if ordered today

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Timing Covers, Replacement, Cast Aluminum, Natural Finish, for Mid-Mount Accessory Drive 20-291, 20-293, Gen III, Hemi, VVT, 5.7L, 6.4L, Each

Part Number: HLY-97-374

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Estimated Ship Date: Mar 4, 2026 if ordered today

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Accessory Drive Systems, Gen III, Hemi, Mid-Mount System, Natural Finish, Serpentine, A/C, P/S, Water Pump, Hardware, Chrysler, Dodge, 5.7L, 6.2L, Kit

Part Number: HLY-20-290

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 4, 2026 if ordered today

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Accessory Drive Systems, Mid-Mount, Gen III, Hemi, Non-VVT, Serpentine, 6-groove, Alternator, Power Steering, AC, Water Pump, Belts, Natural, Kit

Part Number: HLY-20-292

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Estimated Ship Date: Mar 4, 2026 if ordered today

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Accessory Drive System, Mid-Mount, Serpentine, 6-groove, Alternator, Power Steering, AC, Water Pump, Belts, Black Finish, Hemi, Gen III, Non-VVT, Kit

Part Number: HLY-20-292BK

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Estimated Ship Date: Mar 4, 2026 if ordered today

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Air Conditioning Compressor Brackets, for R4 Compressor, Aluminum, Polished, Chevy, Small Block LS, Each

Part Number: HLY-20-133P

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Estimated Ship Date: Mar 4, 2026 if ordered today

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Air Conditioner Brackets, Passenger Side, Aluminum, Polished, Sanden 508, Chevrolet, Small Block LS, Each

Part Number: HLY-20-134P

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Estimated Ship Date: Mar 4, 2026 if ordered today

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Pulley Sets, Serpentine, LS Engine Swap Accessory Drive System, Sanden 508 A/C Only, Polished, Chevy, GMC, V8, Kit

Part Number: HLY-20-137P

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 4, 2026 if ordered today

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Pulley Sets, Serpentine, LS Engine Swap Accessory Drive System, R4 A/C Only, Polished, Buick, Chevrolet, GMC, Oldsmobile, Pontiac, Kit

Part Number: HLY-20-140P

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Estimated Ship Date: Mar 4, 2026 if ordered today

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Pulley Sets, Serpentine, LS Engine Swap Accessory Drive System, Sanden 7 A/C Only, Polished, Chevy, V8, Kit

Part Number: HLY-20-142P

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Estimated Ship Date: Mar 4, 2026 if ordered today

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

Part Number: HLY-20-155P

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Estimated Ship Date: Mar 4, 2026 if ordered today

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Accessory Drive Systems, LS Mid-Mount, Serpentine, Alternator, A/C, Water Pump, Power Steering, SFI Damper, Polished Finish, Chevy, 4.8-6.2, Kit

Part Number: HLY-20-180P

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Estimated Ship Date: Mar 4, 2026 if ordered today

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Accessory Drive Systems, LS Mid-mount, Serpentine, Alternator, Water Pump, Clockwise, Tensioner, SFI Damper, Black Finish, Chevy, 4.8-7.0L, Kit

Part Number: HLY-20-182BK

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Estimated Ship Date: Mar 4, 2026 if ordered today

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Accessory Drive Systems, LS Mid-mount, Serpentine, Alternator, Water Pump, Counterclockwise, Pulleys, 6-groove, Natural Finish, Chevy, 4.8-7.0L, Kit

Part Number: HLY-20-187

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Estimated Ship Date: Mar 4, 2026 if ordered today

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Engine Management Systems, Terminator LS, Plug-andPlay, 8-Injectors, 8-Coils, Drive-by-Wire, with Controller, Chevy, Truck, 4.8-6.0L, 24x Crank, Kit

Part Number: HLY-550-615

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Estimated Ship Date: Mar 4, 2026 if ordered today

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Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, NTK O2, Wideband, Ford, Lincoln, Mercury, 2-valve, 4.6L, 5.4L, Kit

Part Number: HLY-550-616N

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Estimated Ship Date: Mar 4, 2026 if ordered today

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Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, NTK O2 Sensor, Wideband, CANBUS, Ford, 4-valve, 4.6L, 5.4L, Kit

Part Number: HLY-550-617N

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Estimated Ship Date: Mar 4, 2026 if ordered today

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Intake Manifold Adapters, LS Modular, Mid-Rise Intake, Adapter Plate, Cathedral Port Head, Aluminum, Black Finish, Fasteners, Chevy, LS, 4.8-7.0L, Kit

Part Number: HLY-300-267BK

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Estimated Ship Date: Mar 4, 2026 if ordered today

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Fuel Injections System Wiring Harnesses, Gen III Hemi, Drive-By-Wire Harness, Early Pedal, OE Connectors, Plug-and-Play, Chrysler, Dodge, Jeep, Kit

Part Number: HLY-558-417

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Estimated Ship Date: Mar 4, 2026 if ordered today

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