A8 Quattro Sedan V8-4.2L (AKB) (2002)
1. Master brake cylinder (secondary piston circuit)
2. Master brake cylinder (primary piston circuit)
3. Left-rear brake caliper
4. Right-rear brake caliper
5. Front left brake caliper
6. Front right brake caliper
Installed, as of April 1997
Fig. 3 Brake line connections at the ABS hydraulic unit, ABS 5.3 with integrated suction dampers
1. Master brake cylinder (secondary piston circuit)
2. Master brake cylinder (primary piston circuit)
3. Left-rear brake caliper
4. Right-rear brake caliper
5. Front left brake caliper
6. Front right brake caliper