NTK 24557 Oxygen Sensor - Upstream

Direct-fit oxygen sensor for import applications

This NTK direct fit oxygen sensor is built for specific applications and uses a heated, 4-wire design with a flange mount and 18 mm thread diameter. It is engineered for accurate air/fuel ratio feedback and OE-style fitment on select Lexus and Toyota models.

• Specific-fit oxygen sensor for direct replacement applications
• Heated 4-wire design for stable sensor operation
• Flange-mounted construction with 18 mm thread diameter
• Built for upstream air/fuel ratio monitoring
• NTK oxygen sensor technology backed by OE-focused manufacturing

Fitment and application details

Fits 1996-1997 Lexus LX450, upstream. Fits 1995-1997 Toyota Land Cruiser, upstream. Fitment notes include Bank 1 Sensor 1 and OE-equivalent design references for the listed applications. Part number 24557 is a direct fit oxygen sensor for these vehicles, and 24557 is also referenced in cross-application listings for the same use case.

What this sensor helps address

• Incorrect air/fuel ratio sensor readings
• Check engine light concerns related to upstream oxygen sensing
• Rough idle or drivability issues tied to sensor feedback
• Emissions performance problems from a worn oxygen sensor

Installation notes and quality

Verify the connector, thread size, mounting style, and upstream location before installation. Match the application notes for Bank 1 Sensor 1 and confirm the vehicle build date where listed. NTK states these oxygen sensors are extensively tested during manufacturing to meet or exceed OE specifications, and the brand is part of the NGK family with a strong OE supply background.