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Erni relay (OEM 9931121014, EFBF40) for Volvo B10M buses built 1978–2003. This electrical switching component handles high-current circuits, commonly used in fuel pump, fan, or lighting systems. Check the donor vehicle's wiring diagram to confirm fitment to your circuit. Inspect terminals for corrosion before installation.
Erni relay (OEM 9931121014, EFBF40) for Volvo B10M buses built 1978–2003. This electrical switching component handles high-current circuits, commonly used in fuel pump, fan, or lighting systems. Check the donor vehicle's wiring diagram to confirm fitment to your circuit. Inspect terminals for corrosion before installation.
