The TYchDK Motorcycle Oxygen Sensor is a must-have replacement part for your KA Z650, ER650, N 400, EX400, or 650 motorcycles, featuring the perfect fit for your specific engine model. This high-performance sensor ensures optimal engine efficiency, air-fuel ratio control, and emission reduction. Its durable construction and precision fit ensure a long-lasting performance, even in the most challenging riding conditions. Our range includes the 21176-0853, 21176-0824, and 21176-0839 sensors, catering to your every need. Invest in Tyc DK's quality, reliability, and satisfaction guarantee.