Bosch 13558 Oxygen Sensor Heated After Catalytic Converter - 4-Wire

The Bosch 13558 Oxygen Sensor is a premium heated O2 sensor designed for mounting after the catalytic converter. This 4-wire planar design sensor features advanced ceramic technology that monitors exhaust oxygen levels to optimize engine performance, fuel efficiency, and emissions control.

Key Features:

• Premium ceramic technology incorporating Zirconium or Titania and Yttrium for superior protection against mechanical and thermal shock
• Patented catalytically activated fine particle filter prevents contamination and ensures precise voltage signals to the engine control computer
• Dual-layer filtration system doubles protection against exhaust gas contamination for extended sensor life
• Heated 4-wire design with 31.1-inch wire length for quick response and reliable cold-start performance
• OE-style silicone boots ensure proper fit, function, and authentic appearance
• Direct plug-in installation with no cutting or splicing required
• Planar sensor design for faster light-off and more accurate readings

Bosch oxygen sensors help prevent premature catalytic converter failure while optimizing fuel consumption and reducing emissions. Each sensor is rigorously tested to meet or exceed OE specifications, providing reliable performance and long service life.