The invention relates to a supply module (10) for conveying an operating/auxiliary agent capable of freezing for the exhaust gas aftertreatment of an internal combustion engine and for heating a reservoir holding the operating/auxiliary agent capable of freezing. The supply module (10) comprises a main heater (18) and an auxiliary heater (30), which are electrically contacted on a supporting body (24). A pot wall (52) of a heating pot (50) comprises electrical contacts (62) of the main heater (18) and electrical contacts (60) of the auxiliary heater (30).