Bosch 13134 Oxygen Sensor - Downstream, Downstream Left or Downstream Right

Bosch Oxygen Sensor for Downstream Applications

Bosch 13134 is a narrow-band heated oxygen sensor built for precise air-fuel-ratio feedback to the ECU. It supports stable combustion control and emissions management on select Dodge Dakota, Dodge Durango, and Jeep Grand Cherokee applications.

As part of the Bosch Engineered Oxygen Sensor line, this sensor reflects Bosch’s OE development history in oxygen sensing, including faster light-off, improved lambda accuracy, and quicker closed-loop operation through advanced ceramic construction and heater control.

Key Features

• Part number 13134
• Specific-fit oxygen sensor for direct application matching
• Narrow-band heated design for faster operating response
• Threaded mounting with 18 mm thread size and 22 mm hex
• 4-wire configuration with included wiring harness
• Round female connector with pin terminals
• Metal housing for high-temperature and vibration resistance
• Downstream placement for emissions feedback control

Detailed Description

Bosch 13134 is a standard replacement oxygen sensor engineered for downstream monitoring on 2000 Dodge Dakota, 2000 Dodge Durango, and 1999-2000 Jeep Grand Cherokee with California Emission System. It measures exhaust oxygen content and sends accurate signals to the ECU so the engine can maintain the correct air-fuel ratio during closed-loop operation. The Bosch Engineered Oxygen Sensor line is built around OE-level sensor development, using durable materials and heater control strategies that support consistent performance under heat and vibration.

This part cross-references Mopar 56028234AA and 56028235AA for the same application. Use Bosch 13134 when you need a direct-fit downstream oxygen sensor for Dodge Dakota, Dodge Durango, or Jeep Grand Cherokee emissions service.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel mixture readings at the ECU
• Slow closed-loop response after startup
• Emissions test failures tied to downstream sensor faults
• Rough combustion control caused by inaccurate exhaust feedback

Installation Notes and Tips

Fits 2000 Dodge Dakota, downstream. Fits 2000 Dodge Durango, downstream right. Fits 2000 Dodge Durango, downstream left. Fits 1999-2000 Jeep Grand Cherokee, downstream with California Emission System. Confirm connector shape, wire count, thread size, and sensor position before installation. Use the threaded mounting point and verify the harness routing matches the original sensor location.

Quality Assurance

Bosch backs this oxygen sensor with more than five decades of OE development in engine management and emissions sensing. The sensor uses advanced ceramic elements, optimized heater control, and high-temperature-resistant materials to support consistent operation in demanding exhaust conditions.