Bosch 13529 Oxygen Sensor - Upstream

Bosch Actual OE Oxygen Sensor for Mitsubishi Galant

Bosch Part Number 13529 is a specific-fit, narrow-band heated oxygen sensor for the upstream position on select 1995-1998 Mitsubishi Galant models with California Emission System. It provides direct air-fuel-ratio feedback to the ECU for stable closed-loop fuel control and emissions monitoring.

The Bosch Actual OE Oxygen Sensor line builds on Bosch’s long OE development history, using proven sensor architecture, ceramic elements, and controlled heater operation for consistent signal response under heat and vibration. For shoppers searching for a 1995-1998 Mitsubishi Galant upstream oxygen sensor or Bosch 13529 replacement, this part is built to OE-style specifications.

• Specific fit for select Mitsubishi Galant applications
• Upstream mounting position
• Narrow-band heated oxygen sensor design
• 4-wire configuration with square connector
• Threaded mount with 18 mm thread size and 22 mm hex size
• Wiring harness included for direct replacement use
• Metal housing for high-temperature service

Detailed Product Overview

Bosch 13529 is an Actual OE Oxygen Sensor engineered for precise switching-type signal output in the exhaust stream. It is a heated narrow-band sensor with a 20.5-inch harness length, blade terminals, and a male square connector, making it a direct replacement for the listed upstream application. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

For 1995-1998 Mitsubishi Galant owners, Bosch 13529 supports accurate feedback to the engine control unit so the system can maintain proper mixture control during warm-up and normal driving. The OE-style construction helps maintain signal consistency in demanding thermal conditions.

What This Oxygen Sensor Helps Address

• Check engine light related to oxygen sensor performance
• Rough idle caused by inaccurate air-fuel feedback
• Fuel trim issues from slow or weak sensor response
• Emissions test failures tied to upstream sensor faults
• Closed-loop operation problems during warm-up

Installation Notes and Tips

Verify the upstream location and California Emission System requirement before ordering. Match the 18 mm thread size, 22 mm hex size, 4-wire layout, and square connector to the original sensor. Because this is a threaded oxygen sensor, proper removal tools and anti-seize practices should follow the vehicle service procedure.

For best results, inspect the connector, harness routing, and exhaust threads before installation on the Mitsubishi Galant. Bosch Part Number 13529 is a direct-fit replacement for the listed application, so the original sensor configuration should be used as the reference.

Quality Assurance

Bosch has more than five decades of OE oxygen sensor development behind this Actual OE line. The design uses OE-proven sensor technology and durable materials intended for consistent operation in high-heat, high-vibration exhaust environments.