NTK 22139 Oxygen Sensor - Downstream Left or Downstream Right

Direct Fit Oxygen Sensor for Ford and Lincoln

NTK 22139 is a direct fit heated oxygen sensor built for specific downstream right applications on select Ford and Lincoln vehicles. It is engineered for OE-style fit, form, and function, with the wiring length, thread size, and mounting style matched for straightforward replacement.

Compatible with 2011-2019 Ford Flex, 2013-2019 Ford Explorer, 2011-2019 Ford Taurus, and 2011-2019 Lincoln MKT, this NTK oxygen sensor supports accurate exhaust feedback in the B1S2 position. The NTK Direct Fit Oxygen Sensor line focuses on original-equipment coverage and application-specific replacement parts.

Key Features

• NTK part number 22139
• Heated oxygen sensor for downstream right placement
• Specific-fit design for direct replacement
• 4-wire configuration with 17.5-inch wiring harness length
• 18 mm thread diameter and threaded mounting type
• OE-style replacement for select Ford and Lincoln applications

Product Details

NTK 22139 is built for vehicles that require a downstream right oxygen sensor in the B1S2 location. The sensor uses a heated design and a 4-wire layout to support exhaust monitoring on the listed Ford Explorer, Ford Flex, Ford Taurus, and Lincoln MKT applications. As part of NTK’s Direct Fit Oxygen Sensor line, it is produced with application-specific dimensions and OE-focused coverage. This part cross-references Bosch 15383 for the same application.

Common Issues This Sensor Can Address

• Check engine light related to oxygen sensor performance
• Fault codes tied to downstream right or B1S2 sensor readings
• Incorrect exhaust feedback from a worn sensor
• Slow or unstable sensor response during emissions monitoring
• Replacement needs after sensor aging or contamination

Installation Notes

Verify the vehicle’s year, make, model, and sensor position before ordering. This sensor is specific fit and uses a threaded mounting design, so confirm the 18 mm thread diameter and 4-wire connector match the original part. For best results, inspect the exhaust bung and wiring routing before installation on Ford Explorer, Ford Flex, Ford Taurus, or Lincoln MKT applications.

Quality Assurance

NTK is a major original equipment oxygen sensor manufacturer, and this sensor is manufactured and tested to meet or exceed OE specifications for fit and reliability. The brand’s OE application focus supports consistent replacement quality for import and domestic vehicles.