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Home >> Audi >> 2021 >> Q8 Premium Plus >> Repair and Diagnosis >> Brakes >> Traction Control >> Antilock Brake System >> 45 Antilock Brake System >> Control Module And Hydraulic Unit >> Brake Lines, Attaching To Hydraulic Unit
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Brake Lines, Attaching To Hydraulic Unit

On the Brake Master Cylinder: 

GWWN45-10408Courtesy of AUDI OF AMERICA, LLC

A -  Master Brake Cylinder Primary Piston Circuit to Hydraulic Unit

Identification: 6 mm diameter and pipe fitting with a M12 x 1 thread

B -  Master Brake Cylinder Secondary Piston Circuit to Hydraulic Unit

Identification: 6 mm diameter and pipe fitting with a M12 x 1 thread

On the Hydraulic Unit: 

GWWN45-10407Courtesy of AUDI OF AMERICA, LLC

1 -  Hydraulic Unit to Left Front Brake Caliper

Identification: 5.25 mm diameter and tube fitting with a M10 x 1 thread

2 -  Hydraulic Unit to Right Front Brake Caliper

Identification: 5.25 mm diameter and tube fitting with a M12 x 1 short thread

3 -  Hydraulic Unit to Left Rear Brake Caliper

Identification: 5.25 mm diameter and tube fitting with a M12 x 1 short thread

4 -  Hydraulic Unit to Right Rear Brake Caliper

Identification: 5.25 mm diameter and tube fitting with a M10 x 1 thread

A -  Hydraulic Unit to Master Brake Cylinder Primary Piston Circuit

Identification: 6 mm diameter and pipe fitting with a M12 x 1 thread

B -  Hydraulic Unit to Master Brake Cylinder Secondary Piston Circuit

Identification: 6 mm diameter and pipe fitting with a M12 x 1 thread

Tightening Specification