Transmission Tightening Specifications

WARNING: This page is about a different car, the 2024 Audi S6 and 2024 Audi A6 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

The tightening specifications apply only to lightly greased, oiled, phosphated or blackened nuts and bolts.
Additional lubricant such as engine oil or transmission fluid may be used, but do not use lubricant containing graphite.
Do not use any ungreased parts.
Tightening specification tolerance: ± 15 %.

Fastening the Transmission to the 6-Cylinder Engine

Fig 1: Engine to Transmission Bolts And Alignment Sleeves -A-

Courtesy of AUDI OF AMERICA, LLC

Item

Bolt

M10 x 50 ¹⁾

2 through 6

M12 x 100 ²⁾

30 + 90°

M12 x 125

30 + 90°

8 and 11

M10 x 60 ²⁾

15 +90°

M10 x 75 ²⁾

15 +90°

M10 x 95 ²⁾

15 +90°

Alignment sleeves for centering

¹⁾ 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.
²⁾ Aluminum bolts may be used two times. Refer to TRANSMISSION TIGHTENING SPECIFICATIONS => The aluminum bolts may be used two times. Therefore, the bolts must be marked with an "X" made by a chisel after they have been used the first time -arrow-. .

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

The aluminum bolts may be used two times. Therefore, the bolts must be marked with an "X" made by a chisel after they have been used the first time -arrow-.

Fig 2: Identifying Aluminum Bolts Marked With An "X"
Courtesy of AUDI OF AMERICA, LLC
Bolts marked with an "X" may not be used again.