- 14.29mm (for vehicles without rear brake pressure regulator upto 1984 only)
- original cast iron type
- Replaces OE Ref: 171611053B
- 14.29mm (for vehicles without rear brake pressure regulator upto 1984 only)
- newer machined aluminium type
- Replaces OE Ref: 1H0611053B
- 17.46mm (for vehicles with rear brake pressure regulator or all Cabriolet from 1984 onwards)
- original cast iron type
- Replaces OE Ref: 331611051A
- 17.46mm (for vehicles with rear brake pressure regulator or all Cabriolet from 1984 onwards)
- newer machined aluminium type
- Replaces OE Ref: 6N0611053