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Replacement Parts for HLY-550-1221

Holley Terminator X Engine Management Systems 550-1221

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Part Number: HLY-550-1221

Estimated Ship Date from Texas: Monday 10/19/2026

$2,049.95

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Engine Management Systems, Holley EFI, Terminator X, Controls 8-Injectors, 8-Coils, Analog Input/Outputs, Wideband, CANBUS, Chevy, Ford, Dodge, Each

Part Number: HLY-554-152

Not Yet Reviewed

Estimated Ship Date: Monday 10/19/2026 if shipped by air

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Estimated Ship Date: Monday 10/19/2026 if shipped by air

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