2003 Holley Parts and Accessories

Accessory Drive Bracket Kits, for Sanden SD508 or SD7 Compressor, Aluminum, Natural, Chevy, Small Block LS, Kit

Part Number: HLY-20-132

4.2 out of 5 stars ( 10 )

Estimated Ship Date: Today

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Alternators, Premium, OE Style, Cast Aluminum, Natural Finish, 150 amps, 12V, Internal Regulator, Serpentine Pulley, Chevy, 4.8-7.0L, Each

Part Number: HLY-197-302

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Intake Manifolds, LS Modular, Ultra Lo-Ram EFI, Cathedral Port Head, Multi-port, Standard Deck, 105mm Bore, Aluminum, Silver, Chevy, 4.8-6.0L, Each

Part Number: HLY-300-621

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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 )

Estimated Ship Date: Today

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Engine Management Systems, Terminator X MAX, 8-EV6 Injectors, 8-Coils, Drive-by-Wire, 3.5 in. Controller, Chrysler, Dodge, 5.7L, 6.1L, Non-VVT, Kit

Part Number: HLY-550-1421

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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 )

Estimated Ship Date: Today

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Gaskets, Intake Manifold, O-ring Seals, Viton®, Stock Ports, 8-piece, Chevy, LS, 5.7L, 6.0L, Set

Part Number: HLY-508-23

4.83 out of 5 stars ( 6 )

Estimated Ship Date: Today

Engine Management Systems, Terminator X, Up to 8-EV6 Injectors, 8-Coils, Analog, O2 Sensor, Plug-and-Play, 3.5 in. Controller, Ford, 4.6L, 5.4L, Kit

Part Number: HLY-550-1217

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Water Pumps, Mechanical, Standard-volume, Counterclockwise Rotation, Aluminum, Natural Finish, Forward Inlet, Mid-belt, Chevy, LS, 4.8-7.0L, Each

Part Number: HLY-22-100

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Today

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Alternator and Power Steering Brackets, Aluminum, Natural, Chevy, Small Block LS, Each

Part Number: HLY-20-135

4.67 out of 5 stars ( 12 )

Estimated Ship Date: Today

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

Part Number: HLY-300-225

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Throttle Cable Brackets, Throttle Body Mounting Style, Aluminum, Black Anodized, Chevy, Kit

Part Number: HLY-20-147

4.64 out of 5 stars ( 14 )

Estimated Ship Date: Today

Intake Manifolds, EFI, LS, Hi-Ram, Base Only, Cathedral Port, Multi-port, Standard Deck, Aluminum, Satin Finish, Chevy, 4.8L, 5.3L, 5.7L, 6.0L, Each

Part Number: HLY-300-227

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Valve Covers, LS Ford Style, Cast Aluminum, Center Bolt, Plain, Cast Aluminum, Black Finish, Two-Piece, Chevy, LS, 4.8-7.0L, Pair

Part Number: HLY-241-187

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Accessory Drive Bracket Kits, for Sanden SD508 or SD7 Compressor, Aluminum, Black, Chevy, Small Block LS, Kit

Part Number: HLY-20-132BK

4.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Intake Manifolds, LS Modular, Lo-Ram EFI, Cathedral Port Head, Multi-port, Standard Deck, 105mm Bore, Aluminum, Satin Finish, Chevy, 4.8-6.0L, Each

Part Number: HLY-300-620

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Engine Management Systems, Terminator X MAX, 8-EV6 Injectors, 8-Coils, Analog Input, USB Cable, Chevy, LS, 5,7L, 1x Cam, 24x Crank, Kit

Part Number: HLY-550-932T

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Wiring Harnesses, Holley EFI, LS1/6, 24X/1X, Main Harness, Plug-and-Play, Extended Length, for Dominator/HP EFI Systems, Chevy, 4.8-6.0L, Each

Part Number: HLY-558-133

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Gaskets, Plenum O-Ring Cord, 4.5 ft. Long, 3/32 in. Diameter, Hi-Ram, Chevy, LS, Each

Part Number: HLY-508-21

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Harmonic Balancers, LS Engine, Internal Balance, Steel, Black, 7.50 in. OD, 1.48 in. ID, with Mid-Mount Accessory Drive Only, GM, 5.7-6.2L, Each

Part Number: HLY-97-205

2.0 out of 5 stars ( 2 )

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Throttle Body, Sniper EFI, Multi-port Injection, 85mm Bore, Billet Aluminum, Black Anodized, Cable Operated, Chevy, 4.8-6.0L, Each

Part Number: SNE-860024

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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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 )

Estimated Ship Date: Today

Engine Management Systems, Dominator EFI, 24-EV1 Injectors, 12-Coils, Analog/Digital, Drive-by-wire, 1x Cam Sensor, Chevy, 5.7L, 6.0L, 24x Crank, Kit

Part Number: HLY-550-657

Not Yet Reviewed

Estimated Ship Date: May 19, 2026 if ordered today

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Intake Manifolds, Sniper EFI, Fabricated, Cathedral Port, 92mm Throttle Body, 1,800-6,400 RPM, Aluminum, Black, Chevy, LS, 4.8-6.0L, Kit

Part Number: SNE-820102-1

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Power Steering Pulleys, Holley, Replacement, 6-groove, LS Serpentine, Press-fit, Steel, Black, 6.70 in. OD, 0.66 in. Bore, for Saginaw Pump, Each

Part Number: HLY-97-152

3.6 out of 5 stars ( 10 )

Estimated Ship Date: Today