BDFHYK Oxygen Sensor Downstream O2, Compatible with Nissan Armada Frontier NV1500 NV2500 NV3500, Compatible with Suzuki Equator, 16513, 1821382Z20 Replacement 1PCS

16513 Downstream O2 Sensor for Nissan, INFINITI, and Suzuki Applications

This BDFHYK downstream O2 sensor is an OE-style aftermarket replacement for selected Nissan, INFINITI, and Suzuki applications that cross to 16513, 1821382Z20, 226A08U300, or 226A0EA200. The fitment range includes selected Frontier, Titan, Xterra, Pathfinder, Armada, NV vans, Sentra, QX56, and Equator configurations. Because the same vehicle can use different sensors by engine, exhaust bank, and side, match the original part number and physical configuration before ordering.

16513 O2 Sensor Vehicle Fitment

Model-year coverage alone is not enough to confirm fitment. For Nissan Frontier O2 sensor, Nissan Titan O2 sensor, Nissan Xterra O2 sensor, and O2 sensor Nissan Pathfinder searches, verify engine displacement and the exact downstream location before purchase.

16513 Replacement Numbers and Downstream Position Check

• Product type: Oxygen sensor / O2 sensor
• Verified position: Downstream for the listed replacement applications
• Interchange references: 16513; 1821382Z20; 226A08U300; 226A0EA200
• Package quantity: 1 sensor

Do not assume a universal Bank/Sensor label from the word downstream. Bank and side can vary by engine and exhaust layout. Compare the old sensor, connector, lead routing, and service information before installation.

Diagnosing a 16513 Downstream O2 Sensor Before Replacement

A stored fault code or Check Engine Light does not prove that the downstream o2 sensor has failed. Inspect the connector, harness routing, heater power and ground where applicable, exhaust leaks, and related engine-running conditions before replacing parts. Confirm the sensor location from vehicle-specific service information because similar-looking sensors may be used in different positions.

Bad downstream O2 sensor symptoms can overlap with exhaust leaks, wiring faults, fuel-control problems, misfires, or catalytic-converter efficiency issues. Diagnose the stored code and live data before deciding that the sensor itself is the failed component.

Installing the 16513 Nissan and Suzuki O2 Sensor

• Allow the exhaust system to cool completely before removal.
• Compare the old and replacement sensors before installation, including the OE reference, connector, lead routing, and physical configuration.
• Use an O2 sensor socket or suitable wrench; avoid impact tools on the sensor.
• Start the sensor by hand to reduce the risk of cross-threading the exhaust bung.
• Use anti-seize only when permitted by the sensor instructions, and keep compounds away from the sensing element.
• Route the harness away from hot exhaust surfaces, sharp edges, and moving parts, then tighten to the vehicle-specific specification.