NTK 21035 Oxygen Sensor - Downstream

Direct-Fit Oxygen Sensor

NTK Oxygen Sensor 21035 is a specific-fit, heated sensor built for direct replacement applications. It uses a threaded mounting design and a 4-wire configuration with a 16.75-inch harness for a clean, application-specific installation.

• Heated oxygen sensor for faster operating response.
• Specific-fit design for direct replacement use.
• Threaded mounting with 18 mm thread diameter.
• 4-wire construction with 16.75-inch harness length.

Fitment Details

Compatible with downstream applications on select Pontiac Solstice and Saturn Sky models. Fits 2006-2007 Pontiac Solstice, downstream. Fits 2007 Saturn Sky, downstream. This part cross-references Bosch 15894 and DENSO Auto Parts 234-4289 for the same application.

What It Helps Address

• Faulty oxygen sensor readings that can trigger a check engine light.
• Incorrect air-fuel feedback affecting engine management.
• Downstream sensor replacement needs on supported applications.
• Worn threaded sensor assemblies that no longer seal or respond properly.

Installation Notes

Use the threaded mounting style and harness length to confirm application match before installation. Verify the downstream location and connector routing against the original sensor on the vehicle. Follow factory service procedures for removal and installation.

Quality Assurance

NTK is part of the NGK family and is recognized as a major original equipment oxygen sensor supplier. Each sensor is manufactured and tested to meet or exceed OE specifications for fit, form, and function.