Bosch 13676 Oxygen Sensor - Downstream

Bosch Validated Oxygen Sensor for Acura RSX

The Bosch Validated Oxygen Sensor 13676 is a specific-fit, narrow-band heated O2 sensor for downstream use on select Acura RSX models. It provides air-fuel-ratio feedback to the ECU for stable closed-loop fuel control and emissions monitoring.

Bosch Validated Oxygen Sensor line parts draw on Bosch OE development in oxygen sensing, including narrowband designs that improve response time and lambda accuracy. This Bosch 13676 sensor uses a threaded metal housing, 4-wire blade terminals, and an included wiring harness for a direct replacement on the listed application.

Key Features

• Specific-fit oxygen sensor for the downstream position
• Fits 2002-2004 Acura RSX, downstream
• Narrow-band heated sensor design
• 4-wire configuration with rectangular female connector
• Threaded mounting with 18 mm thread size and 22 mm hex size
• Metal housing built for high-temperature and vibration exposure
• Wiring harness included
• Bosch part number 13676

Detailed Description

Bosch 13676 is a standard replacement oxygen sensor built for vehicles that rely on narrow-band feedback to manage fuel delivery and emissions performance. On the 2002-2004 Acura RSX, downstream sensor operation supports ECU monitoring after the catalytic converter, helping maintain accurate exhaust feedback under normal driving conditions. The Bosch Validated Oxygen Sensor 13676 is engineered with heated operation for faster closed-loop response and consistent signal output across changing temperatures.

This Bosch oxygen sensor uses a threaded mount, 4 terminals, and a rectangular female connector for a direct-fit installation on the specified Acura RSX applications. If you are replacing a downstream Acura RSX oxygen sensor, Bosch 13676 provides the OE-focused fit and sensor type needed for the listed vehicle coverage. This part cross-references Honda 36532PRBA01 for the same application.

What It Helps Address

• Check engine light related to downstream oxygen sensor performance
• Incorrect air-fuel feedback to the ECU
• Slow sensor response during closed-loop operation
• Emissions test failures tied to oxygen sensor faults
• Rough fuel control caused by a worn narrow-band sensor

Installation Notes and Tips

Confirm the downstream location before installation and match the connector, thread size, and wire count to the original sensor. Inspect the harness routing and connector condition before connecting the Bosch 13676 sensor. Use proper oxygen sensor service tools to avoid damaging the threaded bung or sensor body during removal and installation.

Quality Assurance

Bosch has decades of OE oxygen sensor development behind the Validated Oxygen Sensor line, with designs focused on accurate signal output, heater control, and durability in demanding exhaust conditions. Bosch 13676 is built as a direct replacement for the listed Acura RSX applications.