NTK 24101 Oxygen Sensor - Upstream

Direct-Fit Oxygen Sensor for Subaru

NTK 24101 is a direct-fit heated oxygen sensor built for specific Subaru applications. It uses a threaded mounting design and a 3-wire configuration to match the original sensor layout for the listed vehicles.

Key Features

• Heated oxygen sensor for faster closed-loop operation
• Specific-fit design for direct replacement use
• Threaded mounting type with 18 mm thread diameter
• 18-inch wiring harness length for application-specific routing
• NTK 24101 part number for catalog and fitment reference

Detailed Description

NTK 24101 is part of the Direct Fit Oxygen Sensor line, which focuses on application-specific replacement sensors with OE-style fit, form, and function. NTK is known for oxygen sensor manufacturing and uses ceramic technology control from raw material through finished product. This sensor is engineered for upstream placement on 1988-1989 Subaru GL, 1988-1989 Subaru GL-10, 1988-1989 Subaru RX, and 1990 Subaru Loyale, including California emissions applications noted in the fitment data. If you are replacing a Subaru oxygen sensor and need a direct-fit solution, NTK 24101 provides a matched configuration for the listed Subaru models.

What It Is Used For

• Replacing a failed upstream oxygen sensor
• Restoring proper air-fuel feedback to the engine control system
• Addressing check engine light concerns related to sensor performance
• Correcting drivability issues caused by inaccurate exhaust oxygen readings
• Maintaining emissions-system operation on listed Subaru applications

Installation Notes and Tips

Compatible with 1988-1989 Subaru GL, 1988-1989 Subaru GL-10, 1988-1989 Subaru RX, and 1990 Subaru Loyale in upstream locations. Verify the threaded mounting style, wire count, and harness length against the original sensor before installation. The part number 24101 should be matched to the vehicle’s emissions configuration and connector requirements before replacement.

Quality Assurance

NTK states that its oxygen sensors are extensively tested during manufacturing to meet or exceed OE specifications. The brand is part of the NGK family of products and is recognized as a major original equipment oxygen sensor supplier.