Bosch 13512 Oxygen Sensor - Upstream

Bosch Wideband Oxygen Sensor for Accord

Bosch Validated Oxygen Sensor 13512 is a specific-fit wideband air-fuel ratio sensor for precise engine management. It is listed for 2001-2002 Honda Accord upstream applications and uses a heated 4-wire design with a threaded metal housing for direct replacement service.

Bosch Validated Oxygen Sensor 13512 is built for drivers and technicians replacing a wideband O2 sensor on a 2001-2002 Honda Accord upstream position. The Bosch Validated Oxygen Sensor line focuses on OE-style fitment and validated application coverage for accurate service selection.

Key Features

• Wideband air-fuel ratio sensor for continuous lambda measurement
• Specific fit for 2001-2002 Honda Accord upstream
• Heated design for faster sensor warm-up
• 4-wire configuration with blade terminals
• Rectangle female connector with included wiring harness
• Threaded mounting type with 18 mm thread diameter
• Metal housing with standard replacement grade construction
• Overall length: 14.4 in; harness length: 14.4 in

Detailed Description

This Bosch wideband oxygen sensor provides the ECU with detailed air-fuel ratio feedback across the full operating range, rather than the limited on/off signal of a traditional switching sensor. That level of measurement supports accurate fuel control during idle, cruise, acceleration, and load changes. Bosch part number 13512 is engineered as a direct-fit replacement for the upstream sensor location on 2001-2002 Honda Accord models.

Bosch pioneered the wideband planar pump-cell sensor design used in modern engine management systems, and this Bosch Validated Oxygen Sensor line carries that OE-focused approach into the aftermarket. The sensor features a heated element, robust ceramic construction, and a threaded metal body for service replacement in emission control systems. This part cross-references Honda 36531PAA306 for the same application.

What This Sensor Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio readings from a worn upstream sensor
• Rough idle or hesitation caused by poor mixture feedback
• Reduced fuel economy from inaccurate ECU fueling corrections
• Higher emissions from delayed or unstable sensor response

Installation Notes and Tips

Confirm the upstream sensor location before installation and verify connector shape, terminal count, and thread size against the removed part. The sensor uses an 18 mm thread diameter and a 22 mm hex size. Because this is a specific-fit Bosch 13512 oxygen sensor for Honda Accord applications, compare the harness routing and connector orientation before final tightening.

Quality Assurance

Bosch has more than five decades of OE development in oxygen sensor technology, and this Validated Oxygen Sensor line is built around OE-proven application coverage and durable construction for emission control service.