NTK 24537 Oxygen Sensor - Downstream or Upstream

Direct Fit Oxygen Sensor for Toyota Applications

The NTK 24537 is a specific-fit heated oxygen sensor built for Toyota emission control applications. It uses a flange mount, 4-wire design, and a 20.75-inch harness length to match the original sensor layout on supported vehicles.

Key Features

• Heated oxygen sensor design for faster operating response.
• Specific-fit configuration for direct application matching.
• 4-wire construction with a 20.75-inch wiring harness.
• 18 mm thread diameter and flange mounting type.
• OE-equivalent design language used across supported Toyota fitments.

Detailed Description

NTK 24537 is part of the Direct Fit Oxygen Sensor line and is engineered for import and domestic coverage with OE-style fit, form, and function. NTK draws on its role as a major original equipment oxygen sensor supplier and applies ceramic manufacturing expertise to produce sensors that are extensively tested during production for quality and reliability. This part number is listed for Toyota 4Runner, Toyota Pickup, Toyota Previa, and Toyota Land Cruiser applications, including upstream and downstream positions where specified. The NTK 24537 is a practical choice when replacing a worn sensor on a Toyota 4Runner, Toyota Pickup, or Toyota Land Cruiser with the correct OE-style configuration.

What This Part Helps Address

• Fault codes related to oxygen sensor performance.
• Incorrect air-fuel ratio feedback to the engine control system.
• Slow sensor response from a heated sensor that has aged or failed.
• Emission control issues tied to upstream or downstream sensor operation.
• Fitment problems caused by using the wrong harness length, thread size, or mount style.

Installation Notes and Tips

Verify the vehicle’s year, model, emissions package, and sensor position before ordering. This part number 24537 is a specific-fit oxygen sensor, so connector style, harness length, thread diameter, and mounting type should be matched to the original unit. Confirm whether the application is upstream or downstream on the Toyota 4Runner, Toyota Pickup, Toyota Previa, or Toyota Land Cruiser listed in the fitment data.

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 manufacturer. Part number 24537 reflects that OE-focused approach for emission control service.