Bosch 13436 Oxygen Sensor - Downstream

Bosch Oxygen Sensor 13436 Overview

Bosch 13436 is a narrow-band heated oxygen sensor built for downstream emissions monitoring and stable air-fuel feedback. It is a specific-fit replacement for select Chrysler, Dodge, and Plymouth minivans, including Chrysler Town & Country, Dodge Caravan, and Plymouth Voyager applications with Transitional Low Emission Vehicle (TLEV) calibration.

As part of the Bosch Engineered Oxygen Sensor line, this sensor reflects Bosch’s long OE development history in oxygen sensing technology. The design uses a threaded metal housing, a round female connector, and an integrated wiring harness for a direct replacement on the listed vehicles.

Key Features

• Part number 13436 for specific-fit downstream applications
• Narrow-band heated oxygen sensor for closed-loop exhaust feedback
• Threaded 18 mm mounting with 22 mm hex size
• Round female connector with 4 terminals and 4 wires
• Wiring harness included; harness length 23.3 in
• Overall length 27 in; sealing surface to connector end 36.2 in
• Steel finish with metal housing for underbody service conditions

Product Details

Bosch 13436 measures exhaust oxygen content and sends that signal to the ECU so the engine can maintain the proper air-fuel ratio during downstream emissions control. The heated narrow-band design helps the sensor reach operating temperature quickly and maintain consistent signal output across changing load and temperature conditions. Bosch’s ceramic sensing element and heater control approach are used to support accurate lambda feedback and reliable closed-loop operation.

This Bosch Engineered Oxygen Sensor is a direct replacement for vehicles such as Chrysler Grand Voyager, Chrysler Town & Country, Chrysler Voyager, Dodge Caravan, Dodge Grand Caravan, Plymouth Grand Voyager, and Plymouth Voyager in the listed downstream positions. This part cross-references 4686723 and 4686934AB for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio readings at the ECU
• Rough idle or unstable combustion control from a failing downstream sensor
• Emissions test failures tied to sensor response or signal accuracy
• Slow closed-loop operation after sensor aging or heater degradation

Installation Notes

• Verify the vehicle is listed by year, make, model, and downstream position before ordering.
• Match the 4-wire round connector and threaded 18 mm sensor mounting to the original part.
• Inspect the exhaust bung threads and wiring routing before installation.
• Use proper oxygen sensor service tools to avoid damaging the housing or connector.
• Clear diagnostic trouble codes and confirm sensor operation after installation.

Quality Assurance

Bosch backs this oxygen sensor with OE-driven engineering developed over more than five decades of oxygen sensing experience. The Bosch Engineered Oxygen Sensor line is built to deliver consistent signal accuracy and durable performance in demanding exhaust environments.