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Engine Block - Back View

GM2716760Courtesy of GENERAL MOTORS COMPANY
Engine Block - Back View

Service Call Out Thread Size Insert Drill Counterbore Tool Tap Driver Drill Depth (Maximum) Tap Depth (Maximum)
EN 42385 MM (IN) MM (IN)
1 M6 x 1.0 161031 201 202 203 204 23.0 0.907 23.0 0.907
2 M8 x 1.25 181213 206 207 208 209 29.0 1.14 29.0 1.14
3 M10 x 1.5 420 211 212 213 214 34.0 1.35 24.0 1.35
4 M12 x 1.75 865 856 857 858 859 27.5 1.08 27.5 1.08
5 M16 x 1.5 420 211 212 213 214 34.0 1.35 34.0 1.35