Bosch 16735 Oxygen Sensor - Upstream

Bosch Actual OE Oxygen Sensor 16735

Bosch 16735 is a specific-fit, narrow-band heated oxygen sensor for upstream applications on select Chevrolet models. It provides the ECU with air-fuel-ratio feedback needed for stable closed-loop fuel control and emissions monitoring.

Key Features

• Actual OE Oxygen Sensor from Bosch Actual OE Oxygen Sensor line
• Specific fit with threaded mounting and oblong female connector
• Narrow-band heated design for faster sensor response
• 4-wire configuration with included wiring harness
• 18 mm thread diameter and 22 mm hex size
• Steel finish with metal housing for high-temperature service
• Wiring harness length: 18.2 in; overall length: 21.6 in

Product Details

Bosch developed its oxygen sensor technology through decades of OE engineering, starting with early sensor designs and advancing to planar narrowband construction for quicker light-off and more accurate lambda control. Part number 16735 uses a heated narrow-band sensing element to deliver consistent signal output under changing exhaust temperatures and vibration loads. This makes it a direct replacement choice for upstream sensor service on 2011-2015 Chevrolet Cruze, 2016 Chevrolet Cruze Limited, and 2012-2018 Chevrolet Sonic.

This part cross-references Monroe Shocks & Struts (e.g., 55572215) for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Rough idle caused by inaccurate air-fuel feedback
• Fuel trim issues from slow upstream sensor response
• Failed emissions inspection tied to sensor degradation
• Reduced closed-loop fuel control on Chevrolet Cruze, Cruze Limited, or Sonic

Installation Notes

Install Bosch 16735 in the upstream position only where listed fitment applies. Verify the 18 mm thread size, 4-wire connector layout, and harness routing before installation. Use proper oxygen sensor service tools to avoid damaging the threaded bung or sensor body, and confirm the connector locks fully after routing away from exhaust heat.

Quality Assurance

Bosch backs this oxygen sensor with OE development experience and materials selected for thermal and vibration resistance. The design reflects Bosch’s long-running role in oxygen sensor engineering and aftermarket OE-style replacement parts.