Bosch 13642 Oxygen Sensor - Downstream, Upstream, Upstream Left or Upstream Right

Bosch Actual OE Oxygen Sensor for Mercedes-Benz

Bosch 13642 is an Actual OE Oxygen Sensor built for precise air-fuel-ratio feedback to the ECU. It is a narrow-band heated sensor with a threaded mount, round female connector, and specific-fit wiring harness for direct replacement on select Mercedes-Benz applications.

Key Features

• Actual OE Oxygen Sensor from Bosch
• Narrow-band heated design for closed-loop fuel control
• Specific fit with included wiring harness
• 4-wire configuration with round female connector
• Threaded mounting, 18 mm thread diameter, 22 mm hex size
• Metal housing for high-temperature and vibration resistance
• Wiring harness length: 15.7 in; overall length: 19.4 in

Product Details

Built on Bosch OE sensor development, part number 13642 uses a switching-type narrow-band design to report oxygen content to the engine control unit so the system can maintain stable combustion control. Bosch’s ceramic sensing element and heater control help the sensor reach operating temperature quickly and maintain consistent signal output under demanding thermal conditions. This Bosch 13642 oxygen sensor is a direct-fit replacement for Mercedes-Benz models that require an upstream or downstream narrow-band heated sensor, including SL500, CL500, E320, E430, S430, S500, S320, S420, and SL320 applications.

This part cross-references 0005407617 for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Rich or lean fuel mixture readings
• Delayed closed-loop fuel control after startup
• Reduced emissions performance from a worn sensor
• Unstable idle or drivability issues tied to air-fuel feedback

Installation Notes

Verify the connector shape, wire count, thread size, and sensor position before installation. This Bosch oxygen sensor uses a threaded mount with a 18 mm thread diameter and 4-wire heated configuration. Confirm the vehicle position matches the listed fitment, such as upstream right, upstream left, upstream, or downstream, before replacing the original sensor on your Mercedes-Benz.

Quality Assurance

Bosch has more than five decades of OE oxygen sensor development, and this Actual OE Oxygen Sensor reflects that engineering background with OE-proven materials and signal accuracy. Bosch 13642 is built for consistent performance in demanding exhaust conditions and is supplied as a standard replacement sensor for the listed Mercedes-Benz applications.