038 117 070 A: Oil/water exchanger O-ring seal for Audi A4 (B5)

This O-ring seal ensures the watertightness of the oil/water exchanger fitted to the Audi A4 (B5). As part of the restoration or maintenance of a classic vehicle, replacing this seal is an essential operation to prevent any mixing between the cooling circuit and the lubrication circuit. A failing seal can lead to contamination with serious consequences for the engine, making its preventive replacement particularly recommended. This new part is the suitable solution for keeping the Audi A4 (B5) in optimal working order.