Features: Wear-resistant design ensures that the filter can withstand long-term use in high-pressure environment, prevent aging and damage, and effectively improve durability. Plastic construction withstands harsh conditions, offering long lasting wear resistance and stable operation in refrigeration diagnostics. By reducing the damage to the sensor, the service life of related equipment can be extended by 30% after using this filter, and the maintenance frequency can be reduced and the maintenance cost can be saved. Optimizes automotive air conditioning servicing and cold storage maintenance by filtering 99%+ airborne contaminants from oxygen sensor readings. Professional replacement filter with standardized interfaces simplifies DIY installation while protecting sensitive refrigeration diagnostics equipment. Specifications: Type: Oxygen Sensor Filter Part number: 16916 16990 16995 Alternative filter: AC1234-4/AC1234-4SL/AC1234-9/AC1234-4-230/AC1234-6 Component: Plastic Color: As shown in the picture Applicable Model: Suitable for R-1234YF machine Package Includes: 1pcs Oxygen Sensor note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.