Bosch 15582 Oxygen Sensor - Upstream

Bosch Oxygen Sensor for Mitsubishi Applications

Bosch Engineered Oxygen Sensor 15582 is a specific-fit, narrow-band heated O2 sensor built for precise air-fuel-ratio feedback to the ECU. It is a threaded, 4-wire replacement with a square male connector and included wiring harness, made for upstream locations on select Mitsubishi Eclipse and Galant applications.

Key Features

• Bosch Engineered Oxygen Sensor part number 15582
• Narrow-band heated oxygen sensor for stable closed-loop control
• Specific fit with threaded mounting and 18 mm thread size
• 4-wire design with blade terminals and square male connector
• Wiring harness included; harness length 15.8 in
• Metal housing with steel finish for underhood durability
• Hex size: 22 mm; overall length: 19.5 in

Product Details

Bosch 15582 uses a switching-type narrow-band design that measures exhaust oxygen content and sends accurate feedback to the engine control unit. Bosch developed this sensor line from its original oxygen sensor technology and later planar narrowband designs, focusing on faster light-off, improved lambda accuracy, and quicker closed-loop operation. For Mitsubishi Eclipse and Mitsubishi Galant vehicles, this upstream sensor supports consistent fuel control under changing temperature and vibration conditions.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Vehicle Fitment

• Fits 2011-2012 Mitsubishi Eclipse, upstream; exact fit; cylinder(s) 3 and 4.
• Fits 2006 Mitsubishi Eclipse, upstream; exact fit; cylinder(s) 3 and 4.
• Fits 2004-2012 Mitsubishi Galant, upstream; exact fit; cylinder(s) 1 and 2.
• Fits 2007-2010 Mitsubishi Eclipse, upstream; exact fit; cylinder(s) 1 and 2.

Common Issues This Sensor Can Address

• Fault codes related to upstream oxygen sensor performance
• Rough idle caused by inaccurate air-fuel-ratio feedback
• Reduced fuel control response during closed-loop operation
• Emissions test failures tied to a worn O2 sensor
• Slow sensor response from heat cycling and vibration exposure

Installation Notes

Confirm the upstream sensor location, connector shape, wire count, and thread size before installation. Use the vehicle-specific harness routing and verify the 18 mm threaded mounting point matches the original sensor. For Mitsubishi Eclipse and Mitsubishi Galant applications, match the cylinder and model-year notes exactly to avoid fitment errors.

Quality Assurance

Bosch has more than five decades of OE oxygen sensor development, and this Engineered Oxygen Sensor line is built to OE-proven standards for accuracy, durability, and consistent operation in demanding thermal conditions.