Home Products BMW & BENZ KT-6378 BMW TRANSMISSION SOCKET (5HP24) KT-6378 KT-6378 BMW TRANSMISSION SOCKET (5HP24) BMW TRANSMISSION SOCKET (5HP24) For grooved nut on transmission drive shaft flange. Size: 1/2" DR., I.D.: 63.5mm (6point) Applicable: BMW 5HP24 / 5HP30 transmission. 1710203