Filters

Selected Filters

Filter Results by Vehicle

Loading...

Availability

Holley

2003 Holley Parts and Accessories

Showing In Stock Items. Show All 31 Items.

Individual Parts
Part Groups

Results 1 - 25 of 28

Holley Terminator X Engine Management Systems 550-909

Holley Terminator X Engine Management Systems 550-909

Holley Terminator X Engine Management Systems 550-909

Engine Management Systems, Terminator X, Up to 8-Injectors, 8-Coils, Analog input, CANBUS, Sensors, Controller, Chevy, 5.7L, 1x Cam, 24x Crank, Kit

Part Number: HLY-550-909

4.56 out of 5 stars ( 9 )

Estimated Ship Date: Tomorrow

...Loading

Estimated Ship Date: Tomorrow

Holley Terminator X Engine Management Systems 550-904

Holley Terminator X Engine Management Systems 550-904

Holley Terminator X Engine Management Systems 550-904

Engine Management Systems, Terminator X, Up to 8-Injectors, 8-Coil, Analog input, CANBUS, Sensors, Controller, Chevy, 4.8-6.0L, 1x Cam, 24x Crank, Kit

Part Number: HLY-550-904

4.9 out of 5 stars ( 10 )

Estimated Ship Date: Tomorrow

...Loading

Estimated Ship Date: Tomorrow

Holley Terminator X Engine Management Systems 550-903

Holley Terminator X Engine Management Systems 550-903

Holley Terminator X Engine Management Systems 550-903

Engine Management Systems, Terminator X, Up to 8-Injectors, 8-Coils, Analog input, CANBUS, Sensors, Controller, Chevy, 5.7L, 1x Cam, 24x Crank, Kit

Part Number: HLY-550-903

4.71 out of 5 stars ( 34 )

Estimated Ship Date: Tomorrow

...Loading

Estimated Ship Date: Tomorrow

Holley Terminator X Engine Management Systems 550-909T

Holley Terminator X Engine Management Systems 550-909T

Holley Terminator X Engine Management Systems 550-909T

Engine Management Systems, Terminator X, Up to 8-Injectors, 8-Coil, Analog, CANBUS, Sensors, USB Tuning Cable, Chevy, 5.7L, 1x Cam, 24x Crank, Kit

Part Number: HLY-550-909T

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

...Loading

Estimated Ship Date: Tomorrow

Holley EFI LS Hi-Ram Intake Manifolds 300-123BK

Holley EFI LS Hi-Ram Intake Manifolds 300-123BK

Holley EFI LS Hi-Ram Intake Manifolds 300-123BK

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

Part Number: HLY-300-123BK

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

...Loading

Estimated Ship Date: Tomorrow

Holley Terminator X Engine Management Systems 550-904T

Holley Terminator X Engine Management Systems 550-904T

Holley Terminator X Engine Management Systems 550-904T

Engine Management Systems, Terminator X, Up to 8-Injectors, 8-Coil, Analog, CANBUS, Sensors, USB Tuning Cable, Chevy, 4.8-6.0L, 1x Cam, 24x Crank, Kit

Part Number: HLY-550-904T

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

...Loading

Estimated Ship Date: Tomorrow

Holley LS Modular Lo-Ram EFI Intake Manifolds 300-621BK

Holley LS Modular Lo-Ram EFI Intake Manifolds 300-621BK

Holley LS Modular Lo-Ram EFI Intake Manifolds 300-621BK

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

Part Number: HLY-300-621BK

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

...Loading

Estimated Ship Date: Tomorrow

Holley Sniper EFI HyperSpark Distributor Kits 565-304K

Holley Sniper EFI HyperSpark Distributor Kits 565-304K

Holley Sniper EFI HyperSpark Distributor Kits 565-304K

Ignition Systems, Sniper 1 EFI, HyperSpark, Ignition Box, Coil, Distributor, Wire Harness, Chrysler, Dodge, Plymouth, Small Block, LA, Kit

Part Number: SNE-565-304K

Not Yet Reviewed

Estimated Ship Date: Tomorrow

...Loading

Estimated Ship Date: Tomorrow

Holley Terminator X Engine Management Systems 550-903T

Holley Terminator X Engine Management Systems 550-903T

Holley Terminator X Engine Management Systems 550-903T

Engine Management Systems, Terminator X, Up to 8-Injectors, 8-Coils, Analog, CANBUS, Sensors, USB Tuning Cable, Chevy, 5.7L, 1x Cam, 24x Crank, Kit

Part Number: HLY-550-903T

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

...Loading

Estimated Ship Date: Tomorrow

Holley EFI LS Hi-Ram Intake Manifolds 300-122

Holley EFI LS Hi-Ram Intake Manifolds 300-122

Holley EFI LS Hi-Ram Intake Manifolds 300-122

Intake Manifolds, EFI Hi-Ram, Cathedral Port Head, Multi-port, 92mm Bore, Standard Deck, Aluminum, Satin Finish, Chevy, LS, 5.7L, 6.0L, Each

Part Number: HLY-300-122

3.63 out of 5 stars ( 8 )

Estimated Ship Date: Tomorrow

...Loading

Estimated Ship Date: Tomorrow

Holley EFI LS Mid-Rise Intake Manifolds 300-126

Holley EFI LS Mid-Rise Intake Manifolds 300-126

Holley EFI LS Mid-Rise Intake Manifolds 300-126

Intake Manifolds, EFI, LS Mid-Rise, Cathedral Port Head, Multi-port, 92mm Bore, Standard Deck, Aluminum, Satin Finish, Chevy, 4.8-6.0L, Each

Part Number: HLY-300-126

2.75 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

...Loading

Estimated Ship Date: Tomorrow

Holley LS Engine Swap Accessory Drive Systems 20-156

Holley LS Engine Swap Accessory Drive Systems 20-156

Holley LS Engine Swap Accessory Drive Systems 20-156

Accessory Drive Systems, LS Engine Swap, Serpentine Style, Alternator, Power Steering, Pullies, 6-groove, Natural Finish, Chevy, LS, 4.8-7.0L, Kit

Part Number: HLY-20-156

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

...Loading

Estimated Ship Date: Tomorrow

Holley LS Modular Lo-Ram EFI Intake Systems 300-620BK

Holley LS Modular Lo-Ram EFI Intake Systems 300-620BK

Holley LS Modular Lo-Ram EFI Intake Systems 300-620BK

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

Part Number: HLY-300-620BK

Not Yet Reviewed

Estimated Ship Date: Tomorrow

...Loading

Estimated Ship Date: Tomorrow

Holley LS Modular Lo-Ram EFI Intake Systems 300-620

Holley LS Modular Lo-Ram EFI Intake Systems 300-620

Holley LS Modular Lo-Ram EFI Intake Systems 300-620

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: Tomorrow

...Loading

Estimated Ship Date: Tomorrow

Holley EFI LS Hi-Ram Intake Manifolds 300-123

Holley EFI LS Hi-Ram Intake Manifolds 300-123

Holley EFI LS Hi-Ram Intake Manifolds 300-123

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

Part Number: HLY-300-123

4.0 out of 5 stars ( 5 )

Estimated Ship Date: Tomorrow

...Loading

Estimated Ship Date: Tomorrow

Holley LS Modular Lo-Ram EFI Intake Manifolds 300-621

Holley LS Modular Lo-Ram EFI Intake Manifolds 300-621

Holley LS Modular Lo-Ram EFI Intake Manifolds 300-621

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

Not Yet Reviewed

Estimated Ship Date: Tomorrow

...Loading

Estimated Ship Date: Tomorrow

Holley EFI LS Mid-Rise Intake Manifolds 300-126BK

Holley EFI LS Mid-Rise Intake Manifolds 300-126BK

Holley EFI LS Mid-Rise Intake Manifolds 300-126BK

Intake Manifolds, EFI, LS Mid-Rise, Cathedral Port Head, Multi-port, 92mm Bore, Standard Deck, Aluminum, Black Finish, Chevy, 4.8-6.0L, Each

Part Number: HLY-300-126BK

Not Yet Reviewed

Estimated Ship Date: Tomorrow

...Loading

Estimated Ship Date: Tomorrow

Holley EFI LS Mid-Rise Intake Manifolds 300-127

Holley EFI LS Mid-Rise Intake Manifolds 300-127

Holley EFI LS Mid-Rise Intake Manifolds 300-127

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

Part Number: HLY-300-127

Not Yet Reviewed

Estimated Ship Date: Tomorrow

...Loading

Estimated Ship Date: Tomorrow

Holley Sniper EFI Fabricated Race Series Intake Manifolds 832142

Holley Sniper EFI Fabricated Race Series Intake Manifolds 832142

Holley Sniper EFI Fabricated Race Series Intake Manifolds 832142

Intake Manifolds, Sniper EFI, Hi-Ram, Cathedral Port, 90mm Throttle Body, 2,100-8,200 RPM, Welded Aluminum, Black, Chevy, LS, 4.8-6.0L, Each

Part Number: SNE-832142

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 11, 2026 if ordered today

...Loading

Estimated Ship Date: Mar 11, 2026 if ordered today

Holley Sniper Fabricated Dual Plenum Intake Manifolds 820202

Holley Sniper Fabricated Dual Plenum Intake Manifolds 820202

Holley Sniper Fabricated Dual Plenum Intake Manifolds 820202

Intake Manifolds, Sniper EFI, Dual Plenum, Cathedral Port, 92mm Throttle Body, 1,00-6,800 RPM, Aluminum, Black, Chevy, LS, 4.8-6.0L, Each

Part Number: SNE-820202

Not Yet Reviewed

Estimated Ship Date: Mar 9, 2026 if ordered today

...Loading

Estimated Ship Date: Mar 9, 2026 if ordered today

Holley EFI LS Hi-Ram Intake Manifold Bases 300-227BK

Holley EFI LS Hi-Ram Intake Manifold Bases 300-227BK

Holley EFI LS Hi-Ram Intake Manifold Bases 300-227BK

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

Part Number: HLY-300-227BK

Not Yet Reviewed

Estimated Ship Date: Mar 4, 2026 if ordered today

...Loading

Estimated Ship Date: Mar 4, 2026 if ordered today

Holley LS Engine Swap Accessory Drive Systems 20-143

Holley LS Engine Swap Accessory Drive Systems 20-143

Holley LS Engine Swap Accessory Drive Systems 20-143

Pulley Sets, Serpentine, LS Engine Swap Accessory Drive System, Without A/C, Chevy, V8, Kit

Part Number: HLY-20-143

Not Yet Reviewed

Estimated Ship Date: Mar 4, 2026 if ordered today

...Loading

Estimated Ship Date: Mar 4, 2026 if ordered today

Holley Sniper EFI Fabricated Race Series Intake Manifolds 832141

Holley Sniper EFI Fabricated Race Series Intake Manifolds 832141

Holley Sniper EFI Fabricated Race Series Intake Manifolds 832141

Intake Manifolds, Sniper EFI, Hi-Ram, Cathedral Port, 90mm Throttle Body, 2,100-8,200 RPM, Welded Aluminum, Silver, Chevy, LS, 4.8-6.0L, Each

Part Number: SNE-832141

Not Yet Reviewed

Estimated Ship Date: Mar 11, 2026 if ordered today

...Loading

Estimated Ship Date: Mar 11, 2026 if ordered today

Holley LS Engine Swap Accessory Drive Systems 20-141BK

Holley LS Engine Swap Accessory Drive Systems 20-141BK

Holley LS Engine Swap Accessory Drive Systems 20-141BK

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

Part Number: HLY-20-141BK

Not Yet Reviewed

Estimated Ship Date: Mar 4, 2026 if ordered today

...Loading

Estimated Ship Date: Mar 4, 2026 if ordered today

Holley LS Engine Swap Accessory Drive Systems 20-140BK

Holley LS Engine Swap Accessory Drive Systems 20-140BK

Holley LS Engine Swap Accessory Drive Systems 20-140BK

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

Part Number: HLY-20-140BK

Not Yet Reviewed

Estimated Ship Date: Mar 4, 2026 if ordered today

...Loading

Estimated Ship Date: Mar 4, 2026 if ordered today