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Direct bolt-on: No modifications needed for installation
ensuring durability and performance
355 023-161
8L4 Volkswagen Jetta 1981–1984 1
OEM Part Number 191927807A Bosch Part Number 0986594012 Position Front
Audi Oxygen Sensor – Upstream – Bosch 17056 9004 Direct bolt-on: No modifications neededBosch upstream oxygen sensor (part 17056) is designed for Audi models equipped with the 4. 0L V8 twin turbo engine. It measures the air fuel ratio upstream of the catalytic converter to optimize combustion and reduce emissions. Bosch is a trusted OEM supplier for Audi sensors. Key Features & Benefits Wideband sensor: Provides precise air fuel ratio readings for turbocharged engines. OE fitment: Direct replacement for Audi S6, S7, RS7, S8, and A8