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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Mechanical - 2.4L) >> Specifications >> Thread Repair Specifications (LEA, or LUK) >> Engine Block Front View

Engine Block Front View

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Fig 1: Identifying Bolt Size & Locations On Engine Block - Front View
GM1492382Courtesy of GENERAL MOTORS COMPANY
Engine Block Front View

Service Call Out Thread Size Insert Drill Counterbore Tool Tap Driver Drill Depth (Maximum) Tap Depth (Maximum)
EN42385850 MM (IN) MM (IN)
1 M8 x 1.25 210 206 207 208 209 23.5 0.93 18.5 0.73
2 M12 x 1.75 855 856 857 858 859 33.5 1.32 26.5 1.04
3 M10 x 1.5 215 211 212 213 214 24.5 0.96 19.5 0.77
4 M6 x 1 205 201 202 203 204 20 0.787 16 0.63