Bosch 18138 Oxygen Sensor - Downstream

Reliable Oxygen Sensor for Ford and Lincoln Vehicles

The Bosch Validated Oxygen Sensor 18138 is designed specifically for select Ford and Lincoln models, including the C-Max, Escape, Fusion, MKZ, SSV Plug-In Hybrid, and Transit Connect. This narrow-band heated oxygen sensor ensures accurate emissions control and optimal engine performance.

• Specific fit for Ford and Lincoln vehicles
• Narrow-band heated oxygen sensor type
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Four-wire design with pin terminal type and square male connector
• Wiring harness length of 23.1 inches included
• Durable metal housing with steel finish
• Overall length of 26.6 inches for precise installation

About the Bosch Validated Oxygen Sensor Line

The Bosch Validated Oxygen Sensor product line focuses on delivering reliable, vehicle-specific sensors that meet OEM standards. The 18138 sensor is engineered to provide consistent performance and accurate readings for emission control systems, helping maintain compliance with environmental regulations and supporting engine efficiency.

Product Details and Specifications

This Bosch oxygen sensor features a narrow-band heated design, which allows it to reach operating temperature quickly for accurate air-fuel mixture readings. The sensor includes a four-wire configuration with female terminals and a male square connector, ensuring secure electrical connections. Its threaded mounting type with an 18 mm diameter and 22 mm hex size allows for straightforward installation. The sensor’s metal housing and steel finish provide durability under harsh engine conditions. The included wiring harness measures 23.1 inches, with an overall length of 26.6 inches from sealing surface to connector end, facilitating proper fitment in compatible vehicles.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for emission control systems
• Helps resolve engine performance issues related to faulty sensors
• Reduces rough idling and poor fuel economy caused by sensor failure
• Supports proper catalytic converter function and emissions compliance
• Prevents check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

When installing the Bosch Validated Oxygen Sensor 18138, ensure the vehicle is compatible with the specific fitment for Ford and Lincoln models listed. Use a 22 mm wrench or socket for mounting and avoid over-tightening the threaded sensor. Verify the wiring harness connections match the vehicle’s connector type to ensure proper electrical contact. It is recommended to inspect the sensor’s wiring and connector for damage before installation.

Quality Assurance and Warranty

Bosch oxygen sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. The Bosch Validated Oxygen Sensor 18138 is a standard replacement part designed to meet OEM specifications. Warranty coverage details should be confirmed with the original product documentation or supplier.