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VW AUDI SKODA SEAT COOLANT EXPANSION TANK RESERVOIR 1K0121407A GOLF PASSAT JETTA TIGUAN
Brand: Original
Category:
COOLANT EXPANSION TANK
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- Volkswagen Golf MK5 / MK6
- Jetta
- Passat B6 / B7
- Tiguan
- Touran
- Audi A3 / TT / Q3
- Skoda Octavia
- SEAT Leon η
The coolant expansion tank reserved for popular VW Group models, including VW, Audi, Skoda, and Seat, offers a reliable reservoir solution for the cooling system. This part carries the OEM specification 1K0121407A and is compatible with Golf, Passat, Jetta, and Tiguan platforms. Built to endure engine heat cycles, it features a robust plastic housing, a wide neck for easy filling, and precise cap threading to prevent leaks. As a direct fit replacement, it supports proper coolant expansion, pressure management, and reservoir-to-radiator return flow, ensuring consistent operating temperatures and protection against overheating. The tank is designed to resist cracking under thermal stress and to maintain stable coolant levels even during rapid temperature swings, contributing to longer engine life and reduced maintenance.
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