Untitled Document Oil Pan Sump Drain Plug Repair Kit for M16 x 1.5 with round head drain plug designed where the drain plug is shrouded or recessed. To repair stripped M16x1.5 oil sump drain plug threads This kit consists of an oversize M17x1.5 Reamer tap (no drill required) which cleans the remains of the old thread and produces a new thread of the correct size for the new round head oversize drain plug (M17x1.5) below which is supplied complete with a fresh copper washer. Head diameter of sump plug is 23mm Click to purchase extra drain plugs Manufactured in Germany by Volkel .