We have over 20 of these in stock right now. They are all tested and have come from running cars. Bosch Part# 0261200473 Part# 96461812400, 964.618.124.00 Superseded Part# 964618124CX ____________________________ Manufacturer: Porsche - BOSCH ____________________________ Vehicle Compatibility: Porsche 911 964 3.6L C2/C4 (1989-1994) ____________________________ Notes: Please match these part numbers with your existing DME ECU. Comes with a 90 day warranty against failure $100 core charge Please be sure that the part/part# is compatible with your vehicle before purchasing