Bosch 15074 Oxygen Sensor - Downstream

Bosch Validated Oxygen Sensor for Jaguar

Bosch Validated Oxygen Sensor 15074 is a narrow-band heated O2 sensor built for precise air-fuel-ratio feedback to the ECU. It is a specific-fit replacement for downstream service on select Jaguar applications, including 1995 Jaguar XJS and 1995-1996 Jaguar XJ12.

Key Features

• Specific-fit Bosch oxygen sensor for direct application matching
• Narrow-band heated sensor for closed-loop fuel control
• 4-wire design with blade terminals and rectangular female connector
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Wiring harness included with 15 in harness length
• Metal housing and high-temperature-resistant construction for demanding exhaust conditions
• Downstream placement for the listed Jaguar fitments

Product Details

Bosch part number 15074 uses Bosch’s validated oxygen sensor technology to monitor exhaust oxygen content and send accurate feedback to the engine control unit. That signal helps maintain stable combustion control, support proper fuel trim, and reduce emissions during normal driving and warm-up operation. Bosch’s long OE development history is reflected in the sensor’s heated narrow-band design, ceramic sensing element, and optimized heater control for quicker closed-loop response.

This Bosch Validated Oxygen Sensor line is built around OE-proven engineering and durable materials for consistent operation under heat and vibration. For buyers searching for a downstream oxygen sensor for 1995 Jaguar XJS or 1995-1996 Jaguar XJ12, Bosch 15074 provides the correct fitment format and sensor configuration for the listed vehicles.

This part cross-references LNA1682BA for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Rich or lean fuel mixture readings at the ECU
• Slow closed-loop fuel control response
• Emissions test failures tied to sensor output
• Rough idle or drivability issues caused by inaccurate exhaust feedback

Installation Notes and Tips

Install Bosch 15074 in the downstream location specified for the vehicle application. Confirm the 18 mm threaded mounting, 4-wire connector layout, and rectangular female connector before installation. Inspect the exhaust bung threads and wiring routing, and verify the harness length and connector reach match the original sensor location on the Jaguar XJS or Jaguar XJ12.

Quality Assurance

Bosch has more than five decades of OE oxygen sensor development, and this Validated Oxygen Sensor line is based on that engineering background. The sensor is built to deliver stable signal accuracy and durable operation in high-temperature exhaust environments.