Left Oxygen Sensor for 2003 Nissan Frontier & More - Bosch 15821

Bosch 15821 left oxygen sensor for the 2003 Nissan Frontier V6 3.3L and other vehicles reads the oxygen left in the exhaust and reports it to the engine computer. This Bosch O2 sensor is a heated, switching-type unit that helps reduce emissions.

• Narrow-band sensing that gives the ECU precise air-fuel-ratio measurements
• Metal housing, integrated heater element and TSP coating to resist vibration, corrosion and contamination
• Built to withstand exhaust streams up to 1,880°F
• Reaches operating temperature in under 10 seconds for quick closed-loop control

Quick facts

• Part: Bosch 15821 oxygen sensor
• Fits: 2003 Nissan Frontier V6 3.3L and other vehicles
• Position: Upstream left
• Material: Metal housing
• Condition: New

A rough idle, lower fuel economy or a check engine light can mean this oxygen sensor is worn, though a leaking exhaust manifold gasket or a misfiring spark plug can also set off those symptoms, so find out which one is at fault before you buy.

Fits

A direct-fit oxygen sensor for the 2003 Nissan Xterra V6 3.3L, it also fits the 2003 Nissan Frontier V6 3.3L.

Specifications

In the box

One oxygen sensor with its wiring harness. This listing is the left upstream sensor, which takes one on the 2003 Nissan Frontier V6 3.3L; the other side is its own part and is ordered separately. A mounting bracket is not included.

Installation notes

• Direct-fit connectors
• Conductive anti-seize is pre-applied to the threads