Mounting Engines on the Manual Transmission (A4, A5)

WARNING: This page is about a different variant/trim than selected.

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.