Engine 6.3L FSI - 368 3.0L TDI - 176kW
kW
Primary drive
27:29 = 0.931
27:34 = 0.794
Gear wheel (front axle)
31:29 = 1.069
31:29 = 1.069
Front axle bevel gear
34:11 = 3.091
34:11 = 3.091
3.076
2.624
Complete front axle ratio =
primary drive x drive wheel x bevel
gear
Rear axle bevel gear
43:13 = 3.308
43:13 = 3.308
Complete rear axle ratio =
3.080
2.627
rear axle bevel gear x primary drive
Oil system, front final drive/transfer
Shared
Separated
case
Start/Stop System
Yes
Yes

Engine
Primary drive
Gear wheel (front axle)
Front axle bevel gear
Complete front axle ratio =
primary drive x drive wheel x bevel gear
Rear axle bevel gear
Complete rear axle ratio =
rear axle bevel gear x primary drive
Oil system, front final drive/transfer case
Start/Stop System

0BK AWD
MEF
N140
Audi A8 from MY 2010
4.0L TFSI - 382 kW
32:33 = 0.970
31:29 = 1.069
34:11 = 3.091
3.204
43:13 = 3.308
3.207
Shared
Yes

Audi A8/A8L/S8 Quick Reference Specification Book • September 2013 141

Automatic Trans. –
0BK

Automatic transmission
Transmission
Identification codes
Torque converter
Identification codes
Allocation
Type

Controls, Housing – 0BK
Securing Transmission to 3.0L TDI Engine

Item
1
2 to 6

1)

2)

Fastener
M10 x 50 1)
M12 x 100 2)

7

M12 x 125

8, 11

M10 x 60 2)

9

M10 x 75 2)

10

M10 x 95 2)

A

Alignment sleeves for centering

Nm
65
30 plus an additional
90° (¼ turn)
30 plus an additional
90° (¼ turn)
15 plus an additional
90° (¼ turn)
15 plus an additional
90° (¼ turn)
15 plus an additional
90° (¼ turn)

Attaches the starter to the transmission. Bolt strength rating 10.9. There is no limit
to the number of times the steel bolt can be used again.
Aluminum bolts can only be used twice. Mark the bolts by making two notches (X)
with a chisel after they have been used the first time. To prevent damaging the bolts
when marking them, do not clamp them in a vise. Insert the bolts in a ½” drive 14
mm socket clamped into a vise. Do not use bolts that have been marked with an X.

142 Audi A8/A8L/S8 Quick Reference Specification Book • September 2013

Item
1
2 to 6

1)

2)

Fastener
M10 x 50 1)
M12 x 100 2)

7

M12 x 125)

8, 11

M10 x 60 2)

9

M10 x 75 2)

10

M10 x 95 2)

A

Alignment sleeves for centering

Nm
65
30 plus an additional
90° (¼ turn)
30 plus an additional
90° (¼ turn)
15 plus an additional
90° (¼ turn)
15 plus an additional
90° (¼ turn)
15 plus an additional
90° (¼ turn)

Bolt strength rating 10.9. There is no limit to the number of times steel bolts may be
used.
Aluminum bolts can only be used twice. Mark the bolts by making two notches (X)
with a chisel after they have been used the first time. To prevent damaging the bolts
when marking them, do not clamp them in a vise. Insert the bolts in a ½” drive 14
mm socket clamped into a vise. Do not use bolts that have been marked with an X.

Audi A8/A8L/S8 Quick Reference Specification Book • September 2013 143

Automatic Trans. –
0BK

Securing Transmission to 3.0L TFSI Engine

Securing Transmission to 4.0L Engine

1)

2)

3)

Item
1
2 to 6

Fastener
M10 x 50 1)
M12 x 100 2)

7

M12 x 175 3)

8, 11

M10 x 60 2)

9

M10 x 75 2)

10

M10 x 95 2)

A

Alignment sleeves for centering

Nm
65
30 plus an additional
90° (¼ turn)
30 plus an additional
90° (¼ turn)
15 plus an additional
90° (¼ turn)
15 plus an additional
90° (¼ turn)
15 plus an additional
90° (¼ turn)

Bolt strength rating 10.9. There is no limit to the number of times steel bolts may be
used.
Aluminum bolts can only be used twice. Mark the bolts by making two notches (X)
with a chisel after they have been used the first time. To prevent damaging the bolts
when marking them, do not clamp them in a vise. Insert the bolts in a ½” drive 14
mm socket clamped into a vise. Do not use bolts that have been marked with an X.
Also attaches the power steering pump. Replace the bolt each time it is removed.

144 Audi A8/A8L/S8 Quick Reference Specification Book • September 2013

1)

2)

Item
1
2, 8

Fastener
M10 x 50 1)
M12 x 100 2)

3, 4, 5, 6,
7, 14
9, 12, 13

M12 x 75 2)
M10 x 75 2)

10

M10 x 40 2)

11

M10 x 60 2)

A

Alignment sleeves for centering

Nm
65
30 plus an additional
90° (¼ turn)
30 plus an additional
90° (¼ turn)
15 plus an additional
90° (¼ turn)
15 plus an additional
90° (¼ turn)
15 plus an additional
90° (¼ turn)

Bolt strength rating 10.9. There is no limit to the number of times steel bolts may be
used.
Aluminum bolts can only be used twice. Mark the bolts by making two notches (X)
with a chisel after they have been used the first time. To prevent damaging the bolts
when marking them, do not clamp them in a vise. Insert the bolts in a ½” drive 14
mm socket clamped into a vise. Do not use bolts that have been marked with an X.

Audi A8/A8L/S8 Quick Reference Specification Book • September 2013 145

Automatic Trans. –
0BK

Securing Transmission to 6.3L Engine

Fastener Tightening Specifications
Component
Automatic Transmission Fluid (ATF) cooler
Automatic Transmission Fluid (ATF) drain
plug 2)
Automatic Transmission Fluid (ATF) pipes 3)
ATF pipes 4)
Bolts and nuts

Brace for left transmission mount
Brace for right transmission mount
Emergency release lever, nut
Drain plug for the transmission fluid inside
the transfer case
Drain plug for the hole for checking and
filling
Drain plug for the hole for checking and
filling for the transmission fluid inside the
front final drive
Drain plug for the hole for checking and
filling, for the transmission fluid inside the
transfer case 2)
Front emergency release cable
Heat shield
Left transmission support 1)
Left transmission mount
Lower stop for the rear transmission mount
2
Oil drain plug for the ATF in the
transmission
Oil drain plug for the ATF in the
transmission for the transmission fluid
inside the transfer case 2)
Rear transmission support
- Nut
-Bolt
Right transmission mount
Right transmission support

Fastener
size
-

Nm

M6
M7
M8
M10
M12
-

8
20
8
9
15
20
40
65
20
20
2.5
12

-

30

-

10

-

27

-

9
10
20
40
20
20 plus an
additional 90°
(¼ turn)
12

-

12

-

20
40
20
20

8
12

146 Audi A8/A8L/S8 Quick Reference Specification Book • September 2013

Component
Selector lever handle lower section
Selector mechanism function unit
Selector Lever Release Button -E681and Selector Lever Transmission Range
Position Display Unit -Y26Transmission support 5)
- Bolt
- Nut
Tunnel crossmember

Tunnel crossmember nut
1)

2)
3)

4)

M10 x 55
8.8
M10 x 40
10.9
-

Nm
7
8
0.25

40
20
40
70
20

For bolt tightening clarification, refer to ElsaWeb, Tunnel Crossmember,
Transmission Mount and Transmission Supports Overview, items 20 and 28.
Replace fastener(s).
For bolt tightening clarification, refer to ElsaWeb, ATF Cooler and ATF Pipes
Overview, items 7 and 8.
For bolt tightening clarification, refer to ElsaWeb, ATF Cooler and ATF Pipes
Overview, item 11.
For bolt tightening clarification, refer to 3.0L TFSI and 3.0L TDI ElsaWeb, Tunnel
Crossmember, Transmission Mount and Transmission Supports Overview, items 5,
6, 7 and 8.

Automatic Trans. –
0BK

5)

Fastener
size
-

Audi A8/A8L/S8 Quick Reference Specification Book • September 2013 147

Selector Lever Sensor System Control
Module Tightening Specifications

Step
1

Bolts
Tighten bolts 1 to 4 in sequence

Nm
1.1

148 Audi A8/A8L/S8 Quick Reference Specification Book • September 2013

Item
1
2
3
4
5
6
1)

Fastener
Automatic Transmission Fluid (ATF) drain plug 1)
Transmission fluid oil drain plug (inside the
transfer case) 1)
Transmission fluid drain plug (inside the transfer
case) 1)
Automatic Transmission Fluid (ATF) check and
fill hole drain plug 1)
Transmission fluid drain plug (inside the front
final drive)
Transmission fluid oil drain plug (inside the front
final drive)

Nm
12
12
27
30
27
10

Replace fastener(s).

Audi A8/A8L/S8 Quick Reference Specification Book • September 2013 149

Automatic Trans. –
0BK

Drain and Fill Plugs Tightening Specifications

Gears, Hydraulic Controls – 0BK
Fastener Tightening Specification
Component
Connector housing
Mechatronic 1)
Oil drain plug
1)

Nm
5.5
10
12

For bolt tightening clarification, refer to ElsaWeb, ATF Pan, ATF Screen,
Mechatronic and Hydraulic Pulse Memory with Accumulator Solenoid -N485Overview, items 5 and 13.

Oil Pan Tightening Specifications

Step
1
2
3
1)

Component
Tighten bolts 1 through 12 in sequence 1)
Tighten bolts 1 through 12 in sequence
Tighten bolts 1 through 12 in sequence

Nm
Hand-tighten
4
an additional
45° (⅛ turn)

Replace fastener(s).

150 Audi A8/A8L/S8 Quick Reference Specification Book • September 2013

Component
Tighten bolts 1 through 19 in sequence

Nm
10

Audi A8/A8L/S8 Quick Reference Specification Book • September 2013 151

Automatic Trans. –
0BK

Mechatronic Tightening Specification
without Hydraulic Pulse Memory

Mechatronic Tightening Specifications
with Hydraulic Pulse Memory

Component

Nm

Tighten bolts 1 through 17 in sequence
Tighten bolts 18 through 21 in sequence

10
10

152 Audi A8/A8L/S8 Quick Reference Specification Book • September 2013

Step
1

Component
Tighten bolts 1 to 3 in sequence

Nm
10

Audi A8/A8L/S8 Quick Reference Specification Book • September 2013 153