宝马氧传感器 11787557758 0258017101 信号稳定 直接替换

When BMW engine warning light is on with rough idle, abnormal fuel consumption, or reduced acceleration, it may be due to oxygen sensor aging/failure causing air-fuel imbalance. This sensor monitors exhaust oxygen content in real time and feeds ECU to accurately control injection; this product OEM 11787557758 (compatible with 0258017101) fits BMW 3 Series (E90/E91), 5 Series (E60), X3 (E83), and other models; replace OEM part directly to restore performance. Use a dedicated socket and keep connectors clean and dry.