Bosch 18253 Oxygen Sensor - Downstream Left

Reliable Oxygen Sensor for Acura and Honda Vehicles

The Bosch Validated Oxygen Sensor 18253 is designed specifically for Acura MDX, Honda Pilot, and Honda TLX models. This heated oxygen sensor ensures accurate air-fuel mixture readings to help maintain optimal engine performance and emissions control.

• Heated narrow-band oxygen sensor with wide-band sensor type
• Specific fit for Acura MDX, Honda Pilot, and Honda TLX
• 4-wire design with a 6.2-inch wiring harness and included harness
• Threaded mounting type with 18 mm thread diameter and 22 mm hex size
• Durable metal housing with a steel finish and female rectangular connector

About the Bosch Validated Oxygen Sensor Line

The Bosch Validated Oxygen Sensor product line offers standard replacement sensors that meet OEM specifications for fit, form, and function. This line is engineered to provide reliable emissions control and accurate sensor readings, supporting vehicle compliance with environmental regulations. The 18253 sensor is part of this line, ensuring compatibility and performance for specific Acura and Honda models.

Product Details and Specifications

This Bosch oxygen sensor features a heated design to quickly reach operating temperature, improving sensor response time and reducing emissions during cold starts. The sensor includes a 6.2-inch wiring harness with four wires and a female rectangular connector, designed for a specific fit rather than universal application. The threaded mounting type with an 18 mm diameter and 22 mm hex size allows for secure installation. The sensor's metal housing and steel finish provide durability under harsh engine conditions. Overall length measures 9.6 inches, with 8.5 inches from the sealing surface to the end of the connector.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for proper air-fuel mixture control
• Helps resolve check engine light codes related to oxygen sensor failure
• Improves fuel efficiency by providing precise emissions data
• Reduces harmful exhaust emissions for environmental compliance
• Prevents engine performance issues caused by faulty sensor readings

Installation Notes and Tips

Ensure the vehicle is compatible with the Bosch 18253 oxygen sensor before installation. The sensor uses a threaded mounting type requiring an 18 mm thread size and 22 mm hex wrench for removal and installation. Handle the sensor carefully to avoid damaging the wiring harness or connector. The included wiring harness length of 6.2 inches allows for proper connection without excess slack. No mounting bracket is included, so use the existing mounting location on the vehicle.

Quality Assurance and Warranty

The Bosch Validated Oxygen Sensor 18253 is manufactured to meet OEM standards for quality and durability. Bosch sensors undergo rigorous testing to ensure reliable performance in emission control systems. While specific warranty details are not provided here, Bosch typically offers coverage consistent with industry standards for replacement oxygen sensors.