Rein Expansion Tank EPT0011 (OEM 8E0121403A) for Audi A4 (2002–2006) Turbocharger Mounting Kit Durable Construction: Resistant to weather

Durable Construction: Resistant to weather and road debris

This product also goes by these part numbers: 1K0121205AJ

Includes Dust Boot: Protects the ball joint from contaminants for extended durability

the cabin air filter’s job is to protect us

Drop-In Design: Installs easily into the factory airbox without modifications

Rein Expansion Tank EPT0011 (OEM 8E0121403A) for Audi A4 (2002–2006) Turbocharger Mounting Kit Durable Construction: Resistant to weatherThis Rein expansion tank (coolant reservoir) is a direct replacement for Audi A4 models from 2002 to 2006 (B6 generation). It stores excess coolant and maintains proper system pressure to prevent overheating. Manufactured from virgin plastic to OE specifications for durability and reliable performance. Key Features & Benefits Direct Fit: Replaces Audi part 8E0121403A without modifications. OE Quality Material: Made from virgin plastic to resist