2003 Holley Parts and Accessories

Oil Pan Baffles, Replacement, LS Swap, Retrofit, Aluminum, Natural Finish, for Holley 302-3, Chevy, 4.8L, 5.3L, 6.0L, Kit

Part Number: HLY-302-12

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 19, 2026 if ordered today

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Pulley Kits, LS Swap, Serpentine, Alternator, Power Steering, A/C, GM Type 2, 105 Amp Alternator, Kit

Part Number: HLY-20-162

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Estimated Ship Date: Jan 12, 2026 if ordered today

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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: Tomorrow

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Throttle Bodies, LS Style, Multi-Port Injection, Cable Actuated, 90mm Bore, Billet Aluminum, Black Anodized, Chevy, 4.8-7.0L, LS Based, Each

Part Number: HLY-112-589

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Tomorrow

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Harmonic Balancers, LS Engine, Internal Balance, Steel, Black, Degree Marked, 7.5 in. Diameter, for Mid-Mount Accessory Drive Only, GM, 5.7-6.2L, Each

Part Number: HLY-97-190

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Estimated Ship Date: Tomorrow

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

Part Number: HLY-550-1020

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Estimated Ship Date: Jan 14, 2026 if ordered today

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Engine Coolant Crossover, LS Steam Vent, Aluminum, Black Anodized, Chevy, Small Block, Kit

Part Number: HLY-26-552

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

Accessory Drive Systems, LS Engine Swap, Serpentine, Black Air Conditioning Pulley, Sanden SD-7 Compressor, Tensioner, Chevrolet, Small Block LS, Kit

Part Number: HLY-20-160

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Estimated Ship Date: Tomorrow

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Crank Trigger Replacement Wheels, 8 in. Diameter, 12-1X, Crank Trigger Wheel, Aluminum, Natural Finish, 3-wire Hall Effect, Chevy, Ford, Each

Part Number: HLY-556-180

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Estimated Ship Date: Tomorrow

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Throttle Bodies, LS Style, Multi-Port Injection, Cable Actuated, 1 Venturi, 105mm, Billet Aluminum, Black Anodized, Chevy, 4.8-7.0L, LS Based, Each

Part Number: HLY-112-583

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Estimated Ship Date: Tomorrow

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Gaskets, Throttle Body, Replacement, 92mm, 102mm, Paper Gasket, Chevy, 5.7L, 6.0L, Each

Part Number: HLY-508-20

4.5 out of 5 stars ( 8 )

Estimated Ship Date: Tomorrow

Lifter Valley Plates, LS Valley, Billet Aluminum, Trussed, Natural Finish, 10-bolt Pattern, Chevy, LS, 4.8L, 5.3L, 5.7L, 6.0L, Each

Part Number: HLY-241-260

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Estimated Ship Date: Tomorrow

Fuel Rails, Holley EFI, LS Fuel Rails, Aluminum, Black Finish, -8 AN O-ring Inlet, Fittings, Hardware, for Hi-Ram Intakes, Chevy, 4.8-7.0L, Pair

Part Number: HLY-534-203

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Estimated Ship Date: Tomorrow

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

Part Number: HLY-241-407

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Crank Triggers, Holley EFI, 12-1X LS, Hall Effect, 7.25 in. Diameter, Aluminum, Silver, Adjustable Bracket, 3-wire Pickup, Gen III, IV, SBC, Kit

Part Number: HLY-556-175

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Estimated Ship Date: Tomorrow

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Oil Pans, Retrofit, LS Engine Swap, Rear Sump, Wet Style, 5.9 Quarts, Aluminum, Black, Buick, Chevy, Ford, GMC, Mercury, Oldsmobile,Pontiac, Each

Part Number: HLY-302-3BK

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Throttle Body, Sniper EFI, Multi-port Injection, 90mm Bore, Billet Aluminum, Silver Anodized, Hardware, Chevy, LS, 4.8-7.0L, Each

Part Number: SNE-860007-1

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Intake Manifolds, Sniper EFI, Fabricated, Cathedral Port, 102mm Throttle Body, 1,800-6,400 RPM, Aluminum, Black, Chevy, LS, 4.8-6.0L, Kit

Part Number: SNE-820112-1

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Fuel Injection System Wiring Harnesses, Holley EFI, Replacement, MPFI, Mass Airflow, Injector Harness, LS Multec 2, Chevy, Truck, 4.8-6.0L, Each

Part Number: HLY-558-214

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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Oil Pans, Gen III Hemi, Retrofit, VVT Engine, Wet Sump, Rear, 1-piece Main Seal, 6.2 Quart, Dipstick Passenger Side, Aluminum, Black, Hardware, Each

Part Number: HLY-302-76BK

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Estimated Ship Date: Tomorrow

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Computer Mounting Brackets, Holley EFI, HP, Terminator, Terminator X, ECU Mount Bracket, Steel, Black, Passenger Seat, Ford, Mustang, Fox Body, Each

Part Number: HLY-554-157

4.33 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

Spacer and Adapters, LS Valve Cover, Adapter, Perimeter Bolt, Cast Aluminum, 1.385 in. Thick, Polished, Chevy, LS, 4.8-7.0L, Kit

Part Number: HLY-241-296

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Adapter Harnesses, Holley EFI, MAP Sensor Adapter, 3-pin Delphi GT to 3-pin Delphi M/P 150 Connector, Plug-and-Play, LS Engine Harness, Each

Part Number: HLY-558-467

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

Crankshaft Pulleys, Holley, Replacement, LS Serpentine, 3-bolt, 6-groove, Steel, Black, for Holley Mid-Mount Accessory Drive, Chevy, 5.7-6.2L, Each

Part Number: HLY-97-159

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Estimated Ship Date: Tomorrow

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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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Estimated Ship Date: Tomorrow

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