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S5 4.2, Automatic
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Cylinder Head, VALVETRAIN [CAUA] (Coupe)
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15 Cylinder Head, VALVETRAIN
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Cylinder Head
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Overview - Cylinder Head
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Reworking Dimension, Cylinder Head
Reworking Dimension, Cylinder Head
Fig 1: Cylinder Head Refacing Dimension
Courtesy of AUDI OF AMERICA, LLC
Resurfacing cylinder head (face grinding) is only permissible to minimum dimension -a-.
Minimum dimension -a- = 139.5 mm.