For first time repairs on Chrysler head bolts that have a Starting thread depth of 21mm. The distance from 1 head bolt to the next should be 106mm or 4.172" inches Kit includes all the tools and 16 inserts of the p/n 12159 NOTE: The standard Universal head bolt kit p/n 4800 will NOT work for this application because this fixture plate in the P/n 8313 is wider to fit this 106mm pattern.  Instructions are included in the kit.