Bosch 12053 Oxygen Sensor - Upstream

Overview of Bosch Engineered Oxygen Sensor 12053

The Bosch Engineered Oxygen Sensor 12053 is designed for precise emission control in select Chrysler, Dodge, Hyundai, Mitsubishi, and Plymouth vehicles. This specific-fit narrow-band oxygen sensor ensures accurate air-fuel mixture readings to support optimal engine performance and emissions compliance.

• Wiring harness length: 27.6 inches
• Blade terminal type with one terminal
• Round male connector with one male terminal
• Standard replacement grade
• Threaded mounting type with 18 mm thread diameter and 22 mm hex size
• Non-heated narrow-band oxygen sensor
• Metal housing with steel finish
• Overall length: 31.3 inches
• Wiring harness included

About the Bosch Engineered Oxygen Sensor Line

The Bosch Engineered Oxygen Sensor line focuses on delivering reliable and precise sensors tailored to specific vehicle applications. The 12053 part number belongs to this line, offering a standard replacement narrow-band sensor designed to meet OEM specifications for emission control systems. This ensures compatibility and consistent performance in vehicles requiring a non-heated oxygen sensor.

Detailed Product Description

This Bosch oxygen sensor features a threaded mounting type with an 18 mm thread diameter and a 22 mm hex size for straightforward installation. The sensor is a narrow-band, non-heated type, suitable for vehicles that do not require heated sensors for faster response times. The wiring harness length of 27.6 inches and the included harness allow for proper connection without modification. The blade terminal and round male connector provide secure electrical contact. Constructed with a metal housing and steel finish, this sensor is built to withstand typical engine bay conditions.

Compatible Vehicles and Applications

• Chrysler models including LeBaron, New Yorker, Town & Country, and Voyager
• Dodge models such as Caravan, Power Ram 50, Ram 50, and Raider
• Hyundai Sonata
• Mitsubishi models including Eclipse, Galant, Mirage, Montero, Starion, and Tredia
• Plymouth models including Aries, Reliant, and Sundance

Common Issues Addressed by This Oxygen Sensor

• Incorrect air-fuel mixture readings causing poor fuel economy
• Check engine light triggered by faulty oxygen sensor signals
• Increased emissions due to sensor failure
• Engine performance problems such as rough idling or hesitation
• Failed emissions tests related to sensor malfunction

Installation Notes and Tips

Ensure the engine is cool before installation to avoid injury. Use a 22 mm oxygen sensor socket or wrench for removal and installation. Verify the sensor thread size (18 mm) matches the vehicle’s exhaust port. The wiring harness included should be connected securely to the vehicle’s wiring harness using the blade terminal and round male connector. Do not overtighten the sensor to prevent damage to the threads or sensor housing.

Quality Assurance and Warranty

The Bosch Engineered Oxygen Sensor 12053 is manufactured to meet OEM standards for fit and function. It is a standard replacement grade sensor designed for durability and reliable performance. While specific warranty details are not provided here, Bosch products typically come with a limited warranty covering defects in materials and workmanship. Refer to Bosch or the product documentation for exact warranty terms.