Audi A4, A6, S4 - Radiator Expansion Bottle (B6 / B7)

Description

High-performance Radiator Expansion Bottle (OEM 8E0121403) engineered for durability and precision within the pressurized cooling systems of Audi’s B6 and B7 platforms.

This coolant reservoir is designed to manage thermal expansion and maintain the necessary pressure levels for efficient engine cooling. Featuring a construction that is highly resistant to extreme temperature cycles and high operating pressures, it prevents coolant loss and protects against engine overheating. Its robust plastic build makes it an ideal solution for cooling system maintenance, ensuring long-term reliability for both naturally aspirated and turbocharged models under South African operating conditions.

Compatible Vehicles

Audi A4 / A4 Quattro (B6 / 2001 – 2005)

Audi A4 / A4 Quattro (B7 / 2005 – 2008)

Audi S4 (B6 / B7 / 2003 – 2008)

Audi A6 / A6 Quattro (C5 / Select 2002 – 2005 Models)

Specifications

OEM Reference No.: 8E0121403 / 8E0121403A

Alternative Part Numbers: 8E0121403C / 8E0121403D

Type: Pressurized Coolant Expansion Tank

Material: High-Grade Heat and Pressure Resistant Synthetic Polymer

Fitting: Direct Replacement for B6/B7 Chassis

Fast and reliable delivery available across South Africa.