Home >> Audi >> 2021 >> A4 Quattro Premium Plus, 2.0L Eng VIN B >> Repair and Diagnosis >> Accessories & Equipment >> Wiring System (Data Link Connectors, Pwr Dist., Grnd Dist.) >> Wiring >> 97 Wiring >> Relay Panels, Fuse Panels And E-Boxes >> Wire Junction, Removing And Installing >> Relay and Fuse Panel 4 -SR4-, REMOVING AND INSTALLING >> Tightening Specifications