VW Oxygen Sensor – Downstream – Bosch 18179

The Bosch 18179 downstream oxygen sensor is a direct-fit replacement for 2016–2018 Volkswagen Jetta models with the 1.4L TSI engine. It monitors catalytic converter efficiency and helps maintain proper air-fuel ratios. Bosch's OE design ensures easy installation and reliable long-term performance.

Key Features & Benefits

• Downstream Position: Installs after the catalytic converter for emission monitoring.
• Specific Fitment: Designed for VW Jetta 1.4L (2016–2018).
• Bosch OE Quality: Provides accurate readings and durability matching OEM parts.
• 100,000-mile typical lifespan: Keeps emissions system in check.

Vehicle Fitment

Technical Specifications

Installation Notes

Direct replacement – disconnect electrical connector, unscrew old sensor, thread in new one.

About Bosch

Bosch is the original equipment supplier for most VW Group engine management components.

This part also goes by the following cross reference.

Cross Reference Part Number: