Bosch 17341 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

Bosch Wideband OE Oxygen Sensor for Mercedes-Benz

Bosch 17341 is an Actual OE wideband air-fuel oxygen sensor built for precise mixture feedback in modern Mercedes-Benz engine management systems. It delivers continuous lambda measurement, fast heater response, and stable signal output for accurate control of fuel delivery and emissions.

Key Features

• Wideband A/F oxygen sensor with continuous, high-precision air-fuel ratio measurement
• Heated design with optimized heater control for faster light-off and stable operation
• Specific-fit sensor with 5-wire harness and included wiring harness
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Metal housing and robust ceramic construction for thermal durability
• Oblong male connector with blade terminals for OE-style integration
• Part number 17341 for direct identification and ordering

Product Details

This Bosch Actual OE Oxygen Sensor line is engineered to provide the ECU with detailed air-fuel ratio data across the full lambda range, rather than the limited switching signal of a conventional sensor. Bosch pioneered the wideband planar pump-cell design used in modern engine control, and this sensor reflects that OE development with fast response, reliable heater performance, and consistent measurement under changing load and temperature conditions. Bosch 17341 is a direct-fit replacement for select Mercedes-Benz applications, including Mercedes-Benz G550, G63 4x4 Squared AMG, SL63 AMG, GLA250, SL550, CLA250, CLA45 AMG, GLA45 AMG, B250, CLS400, SL400, and SLK350 in the listed upstream positions.

This part cross-references Mercedes-Benz 0095425618 for the same application.

What It Helps Address

• Check engine light related to oxygen sensor or air-fuel ratio sensor faults
• Incorrect fuel trim readings from a slow or inaccurate upstream sensor
• Rough idle, hesitation, or drivability issues tied to mixture control
• Reduced fuel economy caused by poor air-fuel feedback
• Elevated emissions from degraded sensor response

Installation Notes and Tips

• Compatible with 2013-2024 Mercedes-Benz applications listed in the fitment data, including upstream left, upstream right, and upstream positions.
• Verify the connector shape, terminal count, and wire length before installation.
• Use the correct oxygen sensor socket for the 22 mm hex and threaded mounting design.
• Inspect the harness routing and connector lock to avoid strain on the sensor lead.
• Clear diagnostic trouble codes after installation and confirm closed-loop operation.

Quality Assurance

Bosch supplies OE-developed oxygen sensors backed by more than five decades of engine management experience. The Actual OE Oxygen Sensor line is built to the same performance expectations used by vehicle manufacturers, with durable construction and precise signal control for modern Mercedes-Benz systems.