2003 Holley Parts and Accessories

Pulley Kits, LS Swap, Serpentine, Alternator, Power Steering, A/C, GM Type 2, Kit

Part Number: HLY-20-162BK

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Wiring Harnesses, Holley EFI, Gen III Hemi, Throttle Position, Idle Air Controls, Factory Connectors, Chrysler, Dodge, Jeep, Hemi, Late Model, Each

Part Number: HLY-558-116

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

Part Number: HLY-241-181

5.0 out of 5 stars ( 3 )

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

Part Number: HLY-300-120

2.0 out of 5 stars ( 1 )

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Weatherproof Connectors, Holley EFI, Replacement, Hall Effect Sensor Connector, Metripack, 3-pin Female, Black, Pins, Seals, TPA, for 554-118, Each

Part Number: HLY-570-223

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Lifter Valley Plates, LS Valley, Billet Aluminum, Trussed with Oil Fill, Black Anodized, 10-Bolt Pattern, Chevy, LS, 5.7L, Each

Part Number: HLY-241-369

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

Part Number: HLY-20-141

4.5 out of 5 stars ( 4 )

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Intake Manifolds, LS Mid-Rise, Standard Deck, Single Carburetor, Single Plane, 2,500-7,000 RPM Range, Aluminum, Black Finish, Chevy, 4.8-6.0L, Each

Part Number: HLY-300-132BK

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Lifter Valley Plates, LS Valley, Billet Aluminum, Trussed with Oil Fill, Natural Finish, 10-Bolt Pattern, Chevy, LS, 5.7L, Each

Part Number: HLY-241-367

5.0 out of 5 stars ( 1 )

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Power Steering Brackets, Mid LSA/LS, Accessory Drive Bracket, Power Steering, Aluminum, Black Finish, Chevy, 4.8L, 5.3L, 5.7L, 6.0L, 6.2L, 7.0L, Kit

Part Number: HLY-20-165BK

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Estimated Ship Date: Apr 21, 2026 if ordered today

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Accessory Belt Tensioners, Holley, LS Assembly, Serpentine, Smooth Pulley, with Low-Mount A/C, for Holley Accessory Drive Only, Chevy, 4.8-7.0L, Each

Part Number: HLY-97-156

4.0 out of 5 stars ( 1 )

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Crank Trigger Wheels, Holley EFI, Replacement, 12-1X, Hall Effect, 6.25 in. Diameter, Aluminum, Silver, Chevy, LS, Small Block, Each

Part Number: HLY-556-185

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Estimated Ship Date: Apr 22, 2026 if ordered today

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Intake Manifold Studs, Lo-Ram, Steel, Natural, Standard 6-point Nuts, Chevy, Small Block LS, Kit

Part Number: HLY-300-612

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

Part Number: HLY-550-916T

5.0 out of 5 stars ( 2 )

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Wiring Harnesses, Holley EFI, Gen III Hemi, VVT, SRV, Sub-Harness Only, Plug-and -Play, for Terminator X, Terminator X Max EFI, Dodge, 5.7-6.4L, Each

Part Number: HLY-558-132

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Fuel Injection Systems, Terminator X Max, Stealth 4150, 24X LS EFI, Four Injector, Throttle Body, Aluminum, Black, Trans Control, Chevy, 4.8-7.0L, Kit

Part Number: HLY-550-1029

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Intake Manifolds, EFI, Hi-Ram, Multi-port, Top Only, 105mm Bore, Cast Aluminum, Black Finish, Chevy, LS, 4.8L, 5.3L, 5.7L, 6.0L, 6.2L, 7.0L,Each

Part Number: HLY-300-246BK

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Fuel Rail Fasteners, Lo-Ram Manifold, LS Series, Aluminum Brackets, Black, Kit

Part Number: HLY-534-262

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Fuel Injection Systems, Terminator X Max, Stealth 4150, 24X LS EFI, Four Injector, Throttle Body, Aluminum, Shiny, Trans Control, Chevy, 4.8-7.0L, Kit

Part Number: HLY-550-1028

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Idler Pulleys, Holley, Replacement, 6-groove, LS Serpentine, Black, Plastic, 2.323 in. Diameter, for Holley LS Accessory Drive, Passenger Side, Each

Part Number: HLY-97-153

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

Pulley Kits, LS Swap, Serpentine, Alternator, Power Steering, A/C, GM Type 2, 130 Amp Alternator, Natural, Kit

Part Number: HLY-20-136

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Apr 20, 2026 if ordered today

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Accessory Drive Bracket Spacer Kits, Aluminum, Black Finish, Long Alignment, Chevy, Small Block LS, Each

Part Number: HLY-21-3BK

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Valve Covers, Aluminum LS, Centerbolt, Tall, Plain Top, Cast Aluminum, Black Satin, Baffled, Chevy, LS, 4.8L, 5.3L, 5.7L, 6.0L, 6.2L, 7.0L, Pair

Part Number: HLY-241-97

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Ignition Coil Brackets, Holley EFI, Offset Coil Bracket, Steel, Black Finish, for Holley Valve Covers, High Mount Alternator, Hardware Included, Each

Part Number: HLY-561-132

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

Valve Covers, Aluminum LS, Centerbolt, Tall, Chevrolet Logo, Cast Aluminum, Orange Gloss, Baffled, Chevy, LS, 5.7L, 6.0L, 6.2L, 7.0L, Pair

Part Number: HLY-241-403

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