45-41
 
  
Electronic Stability Program 
(ESP) hydraulic unit, servicing The tightening torque for all brake lines on the Audi 
A4 is 15 Nm (11 ft lb).  
1 - 
ESP hydraulic unit 
Always replace complete unit
2 - 
Nut 12 Nm (9 ft lb)
3 - 
Bolt and washer assembly 9 Nm (80 in lb)3x
4 - 
Resilient bushing 2x
5 - 
ESP hydraulic pump -V156- Assembly includes brake pressure sensor
6 - 
Resilient pad Pad stud mount to hydraulic pump: 2 Nm 
(18 in lb) 
7 - 
Vehicle body 
Pa
ge 1 of 18 Electronic Stabilit
y Pro
gram 
(ESP
) hydraulic unit, servicin
g
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU03.45.5