Bosch 13149 Oxygen Sensor - Downstream

Bosch Oxygen Sensor for Chrysler and Dodge Vans

Bosch 13149 is a narrow-band heated oxygen sensor built for downstream applications on select Chrysler, Dodge, and Plymouth minivans. It provides the ECU with air-fuel-ratio feedback to support stable combustion control and emissions management across changing operating conditions.

As part of the Bosch Engineered Oxygen Sensor line, this replacement sensor reflects Bosch’s OE development history and uses a threaded, specific-fit design for direct application matching on vehicles such as the Dodge Caravan, Chrysler Town & Country, and Plymouth Voyager.

Key Features

• Part number 13149 Bosch oxygen sensor for downstream placement
• Narrow-band heated sensor type for closed-loop fuel control
• Specific-fit design with 4-wire harness and round female connector
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Metal housing and high-temperature materials for demanding exhaust conditions
• Wiring harness included for application-specific replacement
• Cross-references Bosch 13149 for the same application.

How Bosch Engineered Oxygen Sensors Work

Bosch Engineered Oxygen Sensor products are developed from Bosch’s long OE oxygen-sensor experience, beginning with early sensor designs and advancing to planar narrowband technology. Bosch 13149 uses a switching-type narrow-band design that helps the ECU monitor exhaust oxygen content and adjust fuel delivery during normal driving, idle, and load changes. The heated element supports faster light-off and quicker closed-loop operation, while the ceramic sensing element and optimized heater control help maintain signal consistency under heat and vibration.

Compatible With 1996-2000 Dodge Caravan, downstream; 1996-2000 Dodge Grand Caravan, downstream; 1996-2000 Chrysler Town & Country, downstream; 1996-2000 Plymouth Voyager, downstream; and related Chrysler Voyager and Grand Voyager applications listed for the same downstream position. Bosch 13149 is also listed for 2000 Chrysler Grand Voyager and 2000 Chrysler Voyager downstream applications.

Common Issues This Sensor Can Address

• Check engine light related to oxygen sensor performance
• Unstable air-fuel ratio feedback to the ECU
• Delayed closed-loop operation after startup
• Emissions test failures tied to downstream sensor faults
• Rough combustion control caused by an aging narrow-band sensor

Installation Notes and Tips

Verify the downstream sensor location before installation and confirm the connector style, wire count, and threaded mounting dimensions match the original unit. Inspect the exhaust bung threads and wiring routing before tightening the sensor to avoid cross-threading or harness strain. Because this is a specific-fit replacement, compare the vehicle’s emissions configuration, including notes for non-TLEV applications where listed, before ordering.

Quality Assurance

Bosch backs this oxygen sensor with OE-focused engineering and durable construction intended for long service in high-heat exhaust environments. The Bosch Engineered Oxygen Sensor line is built to deliver consistent signal accuracy and dependable replacement performance for select Chrysler, Dodge, and Plymouth minivan applications.