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Part Number 1K0121251DF Alternative Part Number 2219476 Brand Denso Core Material Aluminum Tank Material Plastic
It secures the engine to the frame
Make Model Years Audi A4 (B8) 2009–2012 Audi A4 (B8
ensure proper sealing and torque
This Denso downstream oxygen sensor monitors exhaust oxygen to optimize the air-fuel mixture
Audi VW Oxygen Sensor 0258007353 – Bosch Audi Coupe Part Number 1K0121251DF Alternative PartThe Bosch Oxygen Sensor 0258007353 is a high quality direct replacement for select Audi and Volkswagen vehicles. It monitors exhaust oxygen levels to optimize the air fuel mixture, improving engine efficiency and reducing emissions. This sensor is compatible with Audi A4, S4, A6, TT, and VW Beetle models from 1999 to 2009. Key Features & Benefits OEM Quality: Manufactured by Bosch, an original equipment supplier for VW Audi. Precise Air Fuel