Bosch 13417 Oxygen Sensor - Downstream or Upstream

Bosch Oxygen Sensor for Mitsubishi Applications

Bosch 13417 is a narrow-band heated oxygen sensor built for specific Mitsubishi applications that require accurate air-fuel ratio feedback to the ECU. It supports stable closed-loop fuel control and is a direct-fit replacement for select Mitsubishi Diamante, Galant, Mirage, Eclipse, and Mirage applications with the listed positions and emissions configurations.

Key Features

• Bosch Engineered Oxygen Sensor line with OE-focused design and materials
• Narrow-band heated O2 sensor for precise switching-type signal output
• Specific-fit replacement with threaded mounting and 18 mm thread size
• 4-wire design with included wiring harness and oblong female connector
• Metal housing and high-temperature-resistant construction for demanding exhaust conditions
• 22 mm hex size for service removal and installation
• Part number 13417 for direct catalog lookup and cross-reference matching

Product Details

Bosch 13417 uses advanced ceramic sensing elements and controlled heater operation to help the engine computer read exhaust oxygen content quickly and accurately. That faster response supports closed-loop operation after startup and during changing load conditions, which is important for emissions control and drivability. Bosch’s Engineered Oxygen Sensor line draws on decades of OE development, and this narrow-band heated design is built for the same type of service expected in factory-style replacement applications. This part cross-references Mitsubishi OE numbers MD184939 and MD335916 for the same application.

Fitment

• Fits 1999-2000 Mitsubishi Diamante, upstream; without California Emission System.
• Fits 1997-1998 Mitsubishi Diamante, upstream.
• Fits 1999-2000 Mitsubishi Galant, upstream; without California Emission System.
• Fits 1999-2000 Mitsubishi Galant, downstream; without California Emission System.
• Fits 1997-2000 Mitsubishi Mirage, downstream.
• Fits 1995-1999 Mitsubishi Eclipse, downstream.
• Fits 1998-1999 Mitsubishi Eclipse, downstream; without California Emission System.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Rough idle or unstable fuel mixture control
• Delayed closed-loop operation after startup
• Reduced emissions performance from a worn sensor
• Incorrect air-fuel ratio readings in the exhaust stream

Installation Notes

Confirm the sensor position before ordering, since Bosch 13417 is listed for both upstream and downstream locations depending on the vehicle. Verify the connector shape, 4-wire configuration, and 18 mm threaded mounting before installation. The sensor is a specific-fit replacement, so matching the exact Mitsubishi model year, position, and emissions note is important for proper installation.

Quality Assurance

Bosch backs this oxygen sensor with more than five decades of OE sensor development and aftermarket supply experience. The Bosch Engineered Oxygen Sensor line is built to deliver consistent signal accuracy and durable operation under heat and vibration typical of exhaust-system service.