Bosch 13718 Oxygen Sensor - Downstream

Bosch Oxygen Sensor 13718 Overview

Bosch Engineered Oxygen Sensor 13718 is a narrow-band heated downstream O2 sensor built for precise air-fuel-ratio feedback to the ECU. It supports stable combustion control and emissions management in vehicles that rely on accurate closed-loop operation.

Compatible with select Dodge Neon, Chrysler PT Cruiser, Jeep TJ, and Jeep Wrangler applications, Bosch 13718 is a specific-fit replacement with a threaded mount, 4-wire harness, and rectangular female connector.

Key Features

• Narrow-band heated oxygen sensor for downstream exhaust monitoring
• Specific-fit design for direct application matching
• 4-wire configuration with included wiring harness
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Metal housing for high-temperature and vibration resistance
• 8.3 in wiring harness length and 12 in overall length
• Bosch Engineered Oxygen Sensor line backed by more than five decades of OE development

Product Details

Bosch 13718 uses advanced ceramic sensing elements and optimized heater control to improve light-off response and maintain accurate lambda feedback across changing exhaust temperatures. The narrow-band heated design supports quicker closed-loop operation, while high-temperature-resistant materials help the sensor hold consistent output under thermal cycling and vibration. This part cross-references Chrysler 5033200AA and 56041847AA for the same application.

Fits 2003-2005 Dodge Neon, downstream. Fits 2003 Chrysler PT Cruiser, downstream. Fits 2001-2003 Jeep TJ, downstream, cylinder(s) 1, 2, and 3. Fits 2001-2003 Jeep Wrangler, downstream, cylinder(s) 1, 2, and 3. Bosch 13718 is a direct-fit oxygen sensor choice for drivers searching for a downstream oxygen sensor for 2003-2005 Dodge Neon, a 2003 Chrysler PT Cruiser downstream O2 sensor, or a Bosch oxygen sensor for 2001-2003 Jeep TJ and Wrangler applications.

Common Issues This Part Addresses

• Faulty oxygen sensor readings that trigger check engine lights
• Unstable air-fuel mixture control during closed-loop operation
• Reduced emissions performance from a worn downstream sensor
• Slow sensor response after heat cycling or age-related wear
• Connector or harness deterioration at the exhaust sensor location

Installation Notes

Install Bosch 13718 in the downstream exhaust position specified for the vehicle application. Confirm connector shape, wire count, thread size, and harness length before installation. Because this is a threaded oxygen sensor, use the correct oxygen sensor socket and follow the vehicle service procedure for removal and torque.

Quality Assurance

Bosch draws on long-term OE oxygen sensor development, including early thimble-style designs and later planar narrow-band technology, to supply aftermarket sensors with OE-proven construction and consistent signal accuracy.