The 1K0121407A coolant expansion tank / radiator overflow bottle is a replacement component for selected Audi Q3 8U 2011-2018 EA888 Gen2 applications. It belongs to the Cooling System category.

OE Reference and Vehicle Compatibility

Main OE reference: 1K0121407A. Listed fitment: Audi Q3 8U 2011-2018 EA888 Gen2, model years 2011-2018, engine EA888 Gen2. Fitment can vary by production date, engine and equipment configuration, so compare the original part number or confirm the VIN before replacement.

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