NTK 24511 Oxygen Sensor - Downstream or Upstream

Direct Fit Oxygen Sensor

The NTK 24511 is a specific-fit oxygen sensor built for import applications that require OE-style form and function. It uses a non-heated, two-wire design with a flange mount and a 17.75-inch harness for direct replacement service.

Compatible With Toyota and Geo applications listed below, this NTK Direct Fit Oxygen Sensor supports accurate exhaust feedback for vehicles that use a flange-mounted sensor layout. The 24511 part number is also referenced across multiple aftermarket catalogs for the same application.

Key Features

• Specific-fit oxygen sensor for direct replacement service
• Non-heated, two-wire design
• Flange mounting type
• 17.75-inch wiring harness length
• NTK direct fit line for OE-style coverage

Application Details

Fits 1993-1995 Geo Prizm, upstream. Fits 1994-1995 Toyota Celica, downstream. Fits 1993-1995 Toyota Corolla, upstream. Fits 1995 Toyota Paseo, upstream. Fits 1991-1995 Toyota Previa, downstream. Fits 1992-1994 Toyota Paseo, upstream. Fits 1991-1994 Toyota Tercel, upstream.

NTK positions this sensor line for import and domestic coverage, with manufacturing controls focused on ceramic sensor quality and OE-level fit, form, and function. The 24511 is a direct-fit oxygen sensor intended for vehicles that call for the listed upstream or downstream configuration.

Common Uses

• Replaces a worn oxygen sensor that can trigger fuel control issues
• Addresses slow or inaccurate exhaust oxygen readings
• Restores proper upstream or downstream sensor operation
• Helps resolve emissions-related fault codes tied to sensor performance

Installation Notes

Verify the connector style, harness length, thread diameter, and mounting type before installation. This sensor is specific fit, so match the vehicle year, make, model, and position exactly to the fitment list. Part number 24511 should be confirmed against the original sensor location and emissions configuration.

Quality Assurance

NTK states that its oxygen sensors are extensively tested during manufacturing to meet or exceed OE specifications. The brand also notes its role as a major original equipment oxygen sensor supplier.