Bosch 0 258 017 099 Premium Oxygen Sensor - 0 258 017 099

The Bosch 0 258 017 099 is a premium OE-quality wideband air/fuel ratio oxygen sensor designed for precise emissions monitoring and engine performance optimization. This wideband sensor utilizes a sophisticated sensing element that enables it to measure the amount of oxygen in the exhaust rather than simply switching between rich and lean readings, providing the ECU with accurate lambda data for optimal fuel trim adjustments.

Key Features:

• 18mm thread diameter with 876mm (34.5") wire length
• Heated zirconium ceramic sensing element for rapid activation
• True direct-fit OE connectors and threads pre-coated with anti-seize compound
• Double laser-welded stainless steel body, totally submersible and sealed
• 100% factory tested with seared protection tube for quality assurance
• Robust sensor design increases sensor longevity

This sensor serves as a direct replacement for BMW part number 11787558073 and is positioned in the rear manifold before catalytic converter with a 910mm cable length. By measuring the oxygen content of the exhaust gas, the sensor supplies necessary information for the right air/fuel mixture to the engine control unit, supporting efficient combustion, proper catalytic converter operation, and reduced emissions. Bosch invented the automotive oxygen sensor and has produced over 1 billion units, maintaining industry-leading quality standards for decades.