NTK 23553 Oxygen Sensor - Upstream

Direct Fit Oxygen Sensor for OE Replacement

NTK 23553 is a direct fit heated oxygen sensor built for specific upstream applications. It is engineered for the air/fuel ratio monitoring role on select Dodge and Jeep vehicles, including Cherokee, Comanche, Wagoneer, and Monaco applications.

As part of NTK’s Direct Fit Oxygen Sensor line, this sensor is designed around OE application coverage and precise fitment. NTK 23553 uses a threaded mounting design, a 3-wire configuration, and a 10.7500-inch wiring harness length for a factory-style replacement on the listed vehicles.

Key Features

• Direct fit, specific application oxygen sensor
• Heated sensor design for upstream air/fuel ratio monitoring
• 3-wire configuration with 10.7500-inch harness length
• Threaded mounting type with 18.000 thread diameter
• OE-style replacement for select Dodge and Jeep applications
• NTK part number 23553

Product Details

NTK is a major original equipment oxygen sensor manufacturer with extensive OE application coverage. The Direct Fit Oxygen Sensor line focuses on factory-style replacement parts that match the required fit, form, and function for specific vehicles. NTK 23553 is built for upstream placement on select 1987-1990 Jeep Cherokee, 1987-1990 Jeep Comanche, 1988-1990 Jeep Wagoneer, and 1990 Dodge Monaco applications, where accurate exhaust oxygen feedback is needed for engine management.

This part cross-references Bosch 12009 for the same application. If you are replacing a worn sensor on a Jeep Cherokee upstream location or servicing a Dodge Monaco air/fuel ratio sensor, NTK 23553 provides a direct replacement option with OE-style configuration.

Vehicle Fitment

• Fits 1990 Dodge Monaco, Upstream. OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.
• Fits 1987-1990 Jeep Cherokee, Upstream. OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.
• Fits 1987-1990 Jeep Comanche, Upstream. OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.
• Fits 1988-1990 Jeep Wagoneer, Upstream. OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.

Common Replacement Reasons

• Check engine light related to oxygen sensor performance
• Incorrect air/fuel ratio readings from the upstream sensor
• Rough idle or drivability issues tied to exhaust feedback
• Failed emissions inspection caused by sensor degradation
• Need for a direct-fit replacement on listed Jeep and Dodge models

Installation Notes and Tips

Confirm the vehicle’s upstream sensor location before ordering. Match the threaded mounting style, wire count, and harness length to the original sensor on the vehicle. For best results, inspect the connector and wiring path before installation and verify the application against the vehicle’s engine management layout.

Quality Assurance

NTK manufactures oxygen sensors with OE-focused testing and application coverage. The sensor is produced to meet or exceed OE specifications for fit, form, and function, with manufacturing controls applied from ceramic material through finished product.