Bosch 18099 Oxygen Sensor - Downstream or Downstream Rear

Bosch Validated Oxygen Sensor for Nissan Applications

Bosch Part Number 18099 is a specific-fit, narrow-band heated oxygen sensor built for downstream monitoring on select Nissan models. It delivers air-fuel-ratio feedback to the ECU for stable closed-loop control and emissions management, making it a direct replacement choice for Nissan Altima and Nissan Rogue applications listed below.

Key Features

• Bosch Validated Oxygen Sensor line for OE-style replacement performance
• Narrow-band heated oxygen sensor design for faster closed-loop operation
• Specific fit with threaded mounting and 18 mm thread diameter
• 4-wire configuration with square male connector and blade terminals
• Wiring harness included; harness length 15.3 in
• Metal housing with high-temperature-resistant construction
• Overall length 18.7 in; sealing surface to connector end 17.5 in
• Hex size 22 mm for service removal and installation

Product Details

Bosch 18099 uses a narrow-band switching-type design to measure oxygen content in the exhaust stream and send precise feedback to the engine control unit. Bosch’s validated oxygen sensor program builds on decades of OE development, including ceramic sensing elements, controlled heater operation, and materials selected for thermal and vibration resistance. This helps maintain accurate lambda response and consistent operation in demanding exhaust environments. This Bosch Validated Oxygen Sensor is a direct-fit replacement for downstream locations on 2007-2013 Nissan Altima and 2008-2013 Nissan Rogue applications listed in the fitment data.

This part cross-references Nissan 226A4JA00A for the same application.

What It Helps Address

• Check engine light related to downstream oxygen sensor performance
• Incorrect air-fuel ratio feedback to the ECU
• Slow sensor response during closed-loop operation
• Emissions test failures tied to oxygen sensor readings
• Rough combustion control caused by aging narrow-band sensor output

Installation Notes and Fitment

• Fits 2013 Nissan Altima, downstream, located after secondary converter; with California Emission System
• Fits 2013 Nissan Altima, downstream, without California Emission System
• Fits 2008-2013 Nissan Rogue, downstream, located after secondary converter; with California Emission System
• Fits 2007-2012 Nissan Altima, downstream rear
• Fits 2007-2011 Nissan Altima, downstream, located after secondary converter

Verify connector shape, wire count, and mounting location before installation. This Bosch 18099 oxygen sensor uses a threaded mount and includes the wiring harness, so it is important to match the downstream position and emissions configuration shown in the fitment table. For Nissan Altima and Nissan Rogue service, confirm the sensor location after the secondary converter before replacement.

Quality Assurance

Bosch backs this oxygen sensor with more than five decades of OE development experience. The Bosch Validated Oxygen Sensor line is built to OE-proven standards for accuracy, durability, and consistent operation in aftermarket service.