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It provides accurate air-fuel mixture detection
Long Life: Typically lasts over 100
Engineered for 2
1K0121205J (and others) Type Engine Cooling Fan Assembly Voltage 12V DC
Bosch Upstream Oxygen Sensor (17115) – Fits Audi A4 B9, A6 C7 performance brake It provides accurate air-fuel mixtureBosch oxygen sensor (part 17115) is a high quality upstream (pre catalyst) sensor designed for select Audi A4 and A6 models with 2. 0L engines. It accurately measures exhaust oxygen content to optimize air fuel ratio, improving fuel efficiency and reducing emissions. OE quality construction provides long service life and a direct fit replacement. Key Features & Benefits Precise upstream measurement: Ensures optimal air fuel ratio for efficient