NST-3043 Pin Wrench Genuine stock: 3212 Removing and installing viscous fan coupling. Application: Audi-A4, A6, A8 VW-Passat NST-3043 Pin Wrench Genuine stock: 3212 Removing and installing viscous fan coupling. Application: Audi-A4, A6, A8 VW-PassatEngines: AHA,ATQ,AKB,AUX,AYS,AEW,APB,AVK,ART,AWN,BCY,BFM,BKH