Bosch 13801 Oxygen Sensor

Bosch Oxygen Sensor for OE-Style Emissions Control

Bosch 13801 is a narrow-band heated oxygen sensor built for precise air-fuel ratio feedback to the ECU. It supports stable combustion control, faster closed-loop operation, and consistent emissions monitoring across changing engine conditions.

Compatible With Chrysler Sebring, Dodge Stratus, Mitsubishi Eclipse, Mitsubishi Galant, Mitsubishi Montero Sport, Mitsubishi Mirage, Mitsubishi Diamante, Mitsubishi 3000GT, Mitsubishi Montero, Mitsubishi Expo, and Dodge Stealth applications listed below.

Key Features

• Bosch Engineered Oxygen Sensor line with OE-focused design and calibration
• Part number 13801
• Narrow-band heated oxygen sensor for standard replacement service
• Specific fit with 4-wire, blade-terminal, square-connector configuration
• Threaded mounting with 18 mm thread size and 22 mm hex size
• Wiring harness included for direct replacement on listed applications
• Metal housing built for high-temperature and vibration exposure

Product Details

Bosch 13801 uses advanced ceramic sensing elements and controlled heater operation to deliver accurate switching-type O2 signal output. That helps the engine management system maintain the correct air-fuel mixture during warm-up, cruise, and load changes. The Bosch Engineered Oxygen Sensor line draws on Bosch OE development dating back to the original oxygen sensor design introduced in 1976, with later planar narrowband technology improving light-off speed and closed-loop response.

This part cross-references Mitsubishi MD177969 and MD186991 for the same application. It is a direct-fit oxygen sensor for multiple Chrysler, Dodge, and Mitsubishi platforms, including Mitsubishi Eclipse, Mitsubishi Galant, and Mitsubishi Montero Sport coverage in upstream and downstream positions where listed.

Common Issues This Sensor Can Address

• Check engine light related to oxygen sensor performance
• Rich or lean fuel mixture readings from a worn sensor
• Slow closed-loop transition after cold start
• Reduced fuel control accuracy during normal driving
• Emissions test failures tied to sensor response or signal quality

Installation Notes

Verify the exact year, make, model, and sensor position before ordering. This Bosch 13801 oxygen sensor uses a threaded mount, 4-wire harness, and square male connector; compare the connector shape, wire count, and harness length to the original part before installation. For best results, inspect the exhaust bung threads and wiring routing, and confirm the correct upstream, downstream, left, right, or rear location for your vehicle.

Fits 2001-2005 Chrysler Sebring, Upstream; 2002-2003 Chrysler Sebring, Upstream Left; 2001-2005 Dodge Stratus, Upstream; 2002-2003 Dodge Stratus, Upstream Left; 2001-2005 Mitsubishi Eclipse, Upstream; 2002-2003 Mitsubishi Eclipse, Upstream Rear; 2001 Mitsubishi Eclipse, Upstream Front; 2001-2003 Mitsubishi Galant, Upstream; 2002-2003 Mitsubishi Galant, Upstream Left; 2001-2003 Mitsubishi Montero Sport, Downstream Left; 2001-2003 Mitsubishi Montero Sport, Downstream Right; 2001-2002 Mitsubishi Mirage, Downstream; 2001-2002 Mitsubishi Mirage, Upstream; 2001-2004 Mitsubishi Diamante, Upstream Left; 1995 Mitsubishi Diamante, Upstream Left; 1999-2000 Mitsubishi Diamante, Upstream Left; 1994-1996 Mitsubishi Diamante, Upstream Left; 1993-1999 Mitsubishi 3000GT, Upstream Left; 1992-1994 Mitsubishi Montero, Upstream; 1995 Mitsubishi Montero, Downstream Left; 1995 Mitsubishi Montero, Upstream; 1994-1996 Dodge Stealth, Upstream Left; 1994-1995 Dodge Stealth, Upstream Left; 1994 Dodge Stealth, Upstream Right; 1993 Dodge Stealth, Upstream Right.

Quality Assurance

Bosch backs this oxygen sensor with more than five decades of OE development experience. The sensor is built with high-temperature-resistant materials and heater control designed for consistent operation under thermal and vibration stress, matching the expectations of OE-style emissions service.