Bosch 18157 Oxygen Sensor - Downstream Left

Overview

Bosch 18157 is a specific-fit, heated narrow-band oxygen sensor built for stable air-fuel ratio feedback and consistent closed-loop operation. It is engineered for the downstream left location on select Honda Odyssey applications and uses a threaded mounting design with a 4-wire blade-terminal connector.

Fits 2014-2017 Honda Odyssey, downstream left.

Key Features

• Specific-fit oxygen sensor for direct application matching.
• Heated narrow-band design for faster sensor response.
• Advanced ceramic sensing element for accurate lambda measurement.
• High-temperature-resistant materials for demanding exhaust conditions.
• 4-wire configuration with rectangular male connector and blade terminals.
• Threaded mounting with 18 mm thread diameter and 22 mm hex size.

Detailed Description

Bosch 18157 is part of the Bosch Validated Oxygen Sensor line, a product family focused on OE-style replacement performance and application-specific fitment. This oxygen sensor measures exhaust oxygen content so the ECU can maintain stable combustion control and manage emissions across changing operating conditions. Bosch’s narrow-band heated design uses optimized heater control to reach operating temperature quickly and maintain consistent output under thermal and vibration stress. For buyers searching for a Honda Odyssey oxygen sensor, Bosch 18157 provides the fitment and sensor architecture needed for reliable replacement service.

This part cross-references Honda 36532RV0A01 for the same application.

Common Issues It Can Address

• Check engine light related to oxygen sensor performance.
• Unstable air-fuel ratio feedback to the ECU.
• Slow sensor response during closed-loop operation.
• Emissions control faults caused by a worn sensor element.
• Rough combustion control from inaccurate exhaust oxygen readings.

Installation Notes and Tips

Verify the connector shape, terminal count, thread size, and downstream left fitment before installation. The sensor uses a threaded mounting style and a 4-wire harness connection, so matching the original configuration is important for proper installation on the Honda Odyssey. Confirm exhaust thread condition and sensor routing before final tightening.

Quality Assurance

Bosch draws on more than five decades of OE development in oxygen sensor engineering. The 18157 is built as a standard replacement part using durable materials and Bosch validated sensor technology for consistent aftermarket service.