Bosch 18210 Oxygen Sensor - Upstream

Bosch Validated Oxygen Sensor for Nissan and INFINITI

Bosch 18210 is a direct-fit, heated narrow-band oxygen sensor built for upstream exhaust locations. It provides the ECU with accurate air-fuel-ratio feedback to support stable combustion control and lower emissions across a wide range of operating conditions.

Fits 2020-2025 Nissan Altima, upstream; 2022-2025 Nissan Pathfinder, upstream; 2020 Nissan Pathfinder, upstream; 2022-2024 INFINITI QX60, upstream; 2020-2024 Nissan Murano, upstream; 2020-2024 Nissan TITAN, upstream; 2020-2024 Nissan TITAN XD, upstream; 2021-2023 Nissan Maxima, upstream; 2021 Nissan Rogue, upstream; 2019 Nissan Altima, upstream.

Key Features

• Direct-fit oxygen sensor with specific fitment for listed Nissan and INFINITI applications
• Heated narrow-band design for quicker closed-loop operation
• 4-wire configuration with rectangular male connector and blade terminals
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Wiring harness included for a cleaner OE-style replacement
• Standard replacement grade for upstream emission control service
• Metal housing and high-temperature-resistant construction for demanding exhaust conditions

Detailed Description

Bosch Validated Oxygen Sensor 18210 uses Bosch’s OE development experience to deliver precise switching-type O2 sensor performance for upstream monitoring. The sensor’s ceramic element, optimized heater control, and durable materials help it respond quickly as the engine enters closed-loop operation, which is important for maintaining proper fuel control on vehicles such as the Nissan Altima, Nissan Pathfinder, and INFINITI QX60. This Bosch 18210 oxygen sensor is a direct-fit replacement engineered for the listed applications and is built to match the original sensor style used in these vehicles.

This part cross-references 226936CA0C for the same application.

What This Oxygen Sensor Helps Address

• Check engine light related to upstream oxygen sensor performance
• Rough idle or unstable air-fuel mixture control
• Delayed closed-loop fuel control after startup
• Increased exhaust emissions from inaccurate sensor feedback
• Fuel trim issues caused by a slow or aging O2 sensor

Installation Notes and Tips

Install Bosch 18210 in the upstream position only for the listed vehicles. Confirm the connector shape, wire count, thread size, and harness length before installation, and inspect the exhaust bung threads for damage or contamination. Because this is a threaded sensor, proper removal and installation tools help reduce the risk of thread damage during service.

Quality Assurance

Bosch has more than five decades of OE oxygen sensor development behind this Validated Oxygen Sensor line. The design reflects Bosch’s long history with thimble and planar narrowband sensor technology, with a focus on accurate lambda feedback, fast light-off behavior, and durable operation under heat and vibration.