Mounting Engines on the Manual Transmission (A4, A5)

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2016 Audi S4, 2015 Audi S4, 2014 Audi S4, 2013 Audi A4, and 2012 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Engine To Transmission Bolts And Alignment Sleeves

Courtesy of AUDI OF AMERICA, LLC

Item

Bolt

1 ¹⁾

M10x50 ²⁾

2 ³⁾ , 7

M12 x 100 ^{4) 5)}

30 + 90°

3 ⁶⁾ , 6

M12 x 75 ^{4) 5)}

30 + 90°

4, 5 ⁶⁾

M12 x 120 ^{4) 5)}

30 + 90°

8 to 10

M10 x 75 ^{4) 5)}

15 + 90°

M12 x 50 ^{4) 5)}

30 + 90°

Alignment sleeves for centering

Also secures the starter.
Bolt strength rating 10.9. There is no limit to the number of times steel bolts may be used.
Also secures that starter; with an additional spacer sleeve between the starter and the transmission.
Audi A4 through VIN 8K-9-066499, and Audi A5 through VIN 8T-9-007999: replace the aluminum bolts.
Audi A4 from VIN 8K-9-066500, and Audi A5 from VIN 8T-9-008000: Aluminum bolts may be used two times. ⁽¹⁾, ⁽²⁾
Also attaches the bracket for the electric wire.

⁽¹⁾	Audi A4 from VIN 8K-9A-066500, Audi A5 from VIN 8T-9A-008000: the aluminum bolts -2 through 11- may be used two times. Therefore, the bolts must be marked with two notches "X" made by a chisel after they have be used the first time -arrow-.

⁽²⁾	To prevent damaging the bolts when marking them, do not clamp them in a vise. Insert the bolt using a 14 mm socket with a 1/2/ drive, which is inserted in to the vise, as illustrated

(See Fig 2).

Bolts must be marked with two notches "X" made by a chisel after they have be used the first time -arrow- .

Fig 2: Identifying Bolts Marked With An "X"
Courtesy of AUDI OF AMERICA, LLC
Bolts marked with an "X" may not be used again.
Audi A4 through VIN 8K-9-066499: always replace the aluminum bolts.
Audi A5 through VIN 8T-9-007999: always replace the aluminum bolts.