铃木雅马哈摩托车氧传感器 21176-0853/21176-0839 通用型

Suzuki/Yamaha motorcycle oxygen sensor (OEM: 21176-0853/21176-0839) universal replacement, directly replaces OEM parts; fits most Suzuki and Yamaha models equipped with catalytic converter. Core function: real-time monitoring of exhaust oxygen content, sending signal to ECU to precisely control air-fuel ratio, ensuring combustion efficiency. After installation, resolves idle instability, weak acceleration, high fuel consumption and excessive exhaust. If starting difficulty, black smoke from exhaust, or fault lights on, sensor aging; replace promptly.