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ARC EFI ECU Relay Modules

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ARC EFI ECU relay modules are offer in several models and configurations, allowing different combinations of input switching. All models, 4-, 8-, and 12-position, feature a #6 main power cable, plug-in replaceable 40 amp relays and fuses, and includes a custom labeling sheet. Choose the ideal option for your race car wiring needs.

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40 amps ARC EFI ECU Relay Module RC4-ECU

Relay Module, 12 V, 40 Amp, Single Pole, 6 Gauge Power Cable, Each

Part Number: ARC-RC4-ECU

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Estimated Ship Date: Feb 13, 2026 if ordered today

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Estimated Ship Date: Feb 13, 2026 if ordered today

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