Description
OEM reference 8375398.9. Genuine used, tested BMW E39 and E53 clock spring (spiral cable / rotary coupler) — an original-equipment unit compatible across the 5 Series E39 and X5 E53.
The clock spring (spiral cable / rotary coupler) is a flat ribbon conductor coiled in a plastic cassette, seated between the steering column and steering wheel hub. As the wheel turns, the ribbon winds and unwinds, maintaining unbroken electrical connections for the driver airbag pyrotechnic circuit, horn, and all steering wheel-mounted control signals (audio, phone, cruise, paddle shifters). A failed clock spring can disable the driver airbag — making it a safety-critical part.
Driver airbag or SRS warning light on the instrument cluster (most urgent — indicates airbag circuit may be open), horn failure, all steering wheel controls becoming unresponsive, a clicking or snapping noise at full wheel lock, or visible ribbon damage.
Safety-critical. Professional installation essential — incorrect fitting can prevent driver airbag deployment. SRS fault codes must be cleared after fitting. Verify OEM before ordering. 14-day returns on unmodified parts.
Returns accepted only for genuine faults — faulty on arrival, not as described, or wrong part supplied — requested within 14 days, with all 3 anti-tamper stickers intact. No returns for change of mind, incorrect installation, coding/programming, or buyer compatibility errors; checking compatibility (OEM number, firmware, vehicle) is the buyer’s responsibility. Full policy: https://giantparts.eu/refund-and-returns/
