Audi a4 (1988-2002) Heater Core FEBI Heater Core PLEASE NOTE the VIN splits. See Fitment Chart below under ''Production Description''. NOTE: A4 1.8 fits through Ch#8D-2-010000 only. Audi part# 8D1 819 030 B, note the vin splits. Recently made by FEBI, not been lying around.