Features: High sensitivity Oxygen Sensor with 100ms response time optimizes fuel efficiency through precise air fuel ratio adjustments. Built with ceramic core and heat resistant stainless steel housing, this O2 Sensor Probe withstands 850°C exhaust temperatures while delivering longevity over standard sensors. Designed for DIY mechanics and owners requiring direct fit 5WK91709 replacement parts to maintain engine performances without professional assistance. Monitors real time exhaust oxygen concentration during daily commutes, highway drives, or harsh operating conditions to ensure optimal combustion and emission control. Precisions engineered 855361 Oxygen Sensor features easy installation in 15 minutes, combining compatibility with enhances durability for reliable vehicle maintenance. Specifications: Material: Stainless steel, copper, zirconia, ceramics, plastic, rubber Size: about 40cm/15.75in Part Number: 855361 5WK91709 Package Includes: 1pc Oxygen Sensor note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.