Bosch 13619 Oxygen Sensor - Upstream

Bosch Oxygen Sensor for Toyota Celica

Bosch Part Number 13619 is a narrow-band heated oxygen sensor built for precise air-fuel ratio feedback and stable closed-loop engine control. It is a specific-fit replacement for 2000-2005 Toyota Celica upstream applications, including Toyota Celica oxygen sensor replacement searches for the 2000, 2001, 2002, 2003, 2004, and 2005 model years.

Key Features

• Specific-fit Bosch Engineered Oxygen Sensor for upstream placement
• Narrow-band heated O2 sensor for fast warm-up and closed-loop response
• 4-wire design with blade terminals and rectangular male connector
• Threaded mounting with 18 mm thread size and 22 mm hex size
• Wiring harness included with 17.5 in harness length
• Metal housing with high-temperature-resistant construction
• Bosch Part Number 13619 for direct reference and ordering

Product Details

Bosch Engineered Oxygen Sensor Part Number 13619 uses a heated narrow-band design to deliver accurate exhaust oxygen feedback to the ECU. That signal helps the engine maintain the correct air-fuel mixture during normal driving, cold starts, and changing load conditions. Bosch’s oxygen sensor development has evolved from early OE sensor designs to faster-responding planar narrowband technology, with ceramic sensing elements and controlled heater performance for consistent operation under heat and vibration. This Bosch oxygen sensor is a direct-fit solution for Toyota Celica upstream service and is built to match the electrical and mounting requirements of the listed application.

This part cross-references Bosch-style replacement applications such as 8946520670 and 8946520700 for the same vehicle coverage.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Rough idle caused by incorrect air-fuel feedback
• Reduced fuel control accuracy during closed-loop operation
• Emissions test failures tied to upstream sensor response
• Slow sensor warm-up after cold starts

Installation Notes

Fits 2000-2005 Toyota Celica, upstream. Confirm the threaded bung size, connector shape, and harness routing before installation. Use proper oxygen sensor service tools to avoid damaging the sensor body or exhaust threads, and inspect the connector and wiring path for heat damage before connecting the new unit. Because this is a specific-fit Bosch oxygen sensor, match the original upstream location and electrical connector style to the vehicle harness.

Quality Assurance

Bosch supplies oxygen sensors with OE development experience and application-specific engineering for aftermarket replacement. Part Number 13619 follows Bosch’s standard replacement approach for accurate signal delivery, durable materials, and consistent performance in demanding exhaust environments.