Bosch 17283 Oxygen Sensor - Upstream

Bosch Actual OE Oxygen Sensor for Mercedes-Benz

Bosch Part Number 17283 is an Actual OE wideband oxygen sensor built for precise air-fuel ratio measurement in modern Mercedes-Benz engines. It delivers fast response, heated operation, and stable signal output for upstream applications where accurate mixture control matters.

Compatible With Mercedes-Benz Maybach S650, S65 AMG, G65 AMG, SL65 AMG, Maybach S600, S600, CL550, CL63 AMG, S550, and S63 AMG upstream positions. This Bosch oxygen sensor 17283 is a direct-fit replacement for vehicles that use a wide band sensor with a 5-wire harness and threaded 18 mm mounting.

Key Features

• Wideband A/F oxygen sensor for continuous air-fuel ratio measurement
• Heated design for faster sensor activity after startup
• Specific-fit replacement with wiring harness included
• 18 mm thread diameter and 22 mm hex size
• Metal housing with oblong male connector
• 6 terminal quantity, 5-wire configuration, blade terminals
• Overall length: 17.7 in; wire length: 17.3 in; harness length: 14.4 in

Product Details

Bosch pioneered the wideband A/F oxygen sensor design used in modern engine management, and this Actual OE line reflects that OE development background. Part number 17283 measures the air-fuel ratio across the full lambda range, giving the ECU detailed feedback for fuel control under changing load and temperature conditions. For Mercedes-Benz applications, that means the upstream sensor can report mixture changes quickly and consistently, helping the engine management system maintain proper combustion control.

This part cross-references Bosch 0085423018 and 0085424418 for the same application.

Common Issues This Sensor Can Address

• Check engine light related to upstream oxygen sensor performance
• Incorrect air-fuel ratio readings from a worn wideband sensor
• Rough idle or drivability concerns tied to inaccurate mixture feedback
• Reduced fuel economy caused by poor sensor response
• Emissions test failures linked to faulty oxygen sensor data

Installation Notes and Tips

Install Bosch 17283 in the upstream location specified for the vehicle application. Confirm connector shape, wire count, and thread size before installation, since this is a specific-fit sensor for select Mercedes-Benz models. Use proper oxygen sensor service tools and verify the exhaust threads are clean and undamaged before threading the sensor into place.

Quality Assurance

Bosch supplies this Actual OE Oxygen Sensor with OE-proven engineering and durable ceramic construction for reliable operation through thermal cycling and rapid load changes. The Bosch 17283 part number is backed by more than five decades of OE sensor development and aftermarket supply experience.