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Lower Crankcase - Back View

Fig 1: Lower Crankcase Thread Specifications - Back View
GM524551Courtesy of GENERAL MOTORS CORP.
Lower Crankcase - Back View

Service Call Out Thread Size Insert Drill Counterbore Tool Tap Driver Drill Depth (Maximum) Tap Depth (Maximum) Engineering Hole Number
J 42385- MM (IN) MM (IN) -
1 M10 x 1.5 215 211 212 213 214 29.50 1.161 THRU 207