Behr Engine Coolant Expansion Tank (8E0121403) – Fits Audi A4 B6/B7 52mm Gauge Pod 8V6 Audi Allroad Quattro 2004–2005

8V6 Audi Allroad Quattro 2004–2005 4

then install the new unit

0L6 BMW X3 2004–2006 3

Paint Detailer

and splitting to ensure reliable coolant flow

Behr Engine Coolant Expansion Tank (8E0121403) – Fits Audi A4 B6/B7 52mm Gauge Pod 8V6 Audi Allroad Quattro 2004–2005This Behr Engine Coolant Expansion Tank (part number 8E0121403 376737131) is a direct OE replacement for Audi A4 and A4 Quattro models from 2002 2009. It stores excess coolant and helps maintain system pressure, preventing boil overs and coolant loss. Made by MAHLE Behr, a leading OEM supplier, this tank ensures factory quality and durability. Key Features & Benefits Direct OE replacement: Exactly matches the fit and function of the original expansion