1.75" LONG shouldered 1/4" bolt fits original concentric pumps plus some GLP139 and GLP110MS - check that you need a bolt this length as many later pumps require shorter bolts. This can of course be cut down or see BH604131.
This is also the bolt that goes through the dowel on the engine block to transmission case and is used on gearbox cases.
GFK5170 is 1.5" long
BH604131 is 1.6250"
BH604141 is 1.75"