Beschreibung
This BMW Valvetronic Relay is a genuine OEM engine electrical component for the BMW E46 with Valvetronic petrol engines. Primary OEM number 12637506449. It is designed to switch the power supply to the Valvetronic system, which varies the intake valve lift of the petrol engine.
Its job is to supply current to the Valvetronic motor and control circuit when the engine control unit requests it. A properly working Valvetronic relay supports smooth idle, a responsive throttle and correct valve lift control. Valvetronic varies valve lift instead of relying only on the throttle, so a stable supply to the system matters for smooth running at every speed and load. Because it works under constant electrical load and heat, this type of component can fail with age, and a tested replacement is a practical way to restore correct function without the cost of a brand new part.
Common signs of a faulty unit include an engine warning lamp, a rough or unstable idle, reduced power, limp mode, Valvetronic fault codes, or an engine that stalls or fails to start. When the relay contacts are worn or the relay does not switch, the Valvetronic system may cut the supply to the Valvetronic motor, which leads to poor running or a reduced power mode.
This is a used original part, removed from a vehicle and tested before sale. Match the exact OEM number 12637506449 before ordering. Professional installation is recommended, and testing the Valvetronic motor and wiring at the same time is a good idea where applicable.
Rücksendungen werden nur bei echten Mängeln akzeptiert — defekt bei Ankunft, nicht wie beschrieben oder falsches Teil geliefert — innerhalb von 14 Tagen, mit allen 3 Originalitätsaufklebern intakt. Keine Rücksendungen bei Sinnesänderung, falscher Installation, Codierung/Programmierung oder Kompatibilitätsfehlern des Käufers; die Prüfung der Kompatibilität (OEM-Nummer, Firmware, Fahrzeug) liegt in der Verantwortung des Käufers. Vollständige Richtlinie: https://giantparts.eu/refund-and-returns/
