- 14.29mm (for vehicles without rear brake pressure regulator)
- original cast iron type
- Replaces OE Ref: 171611053B
- 14.29mm (for vehicles without rear brake pressure regulator)
- newer machined aluminium type
- Replaces OE Ref: 1H0611053B
- 17.46mm (for vehicles with rear brake pressure regulator)
- original cast iron type
- Replaces OE Ref: 331611051A
- 17.46mm (for vehicles with rear brake pressure regulator)
- newer machined aluminium type
- Replaces OE Ref: 6N0611053
with RH thread
for all vehicles with ATE calipers
- Replaces OE Ref: 171611701
with LH thread
only on some vehicles with early type Girling calipers
- Replaces OE Ref: 171611701K