If your M12x1.75 oil drain pan already had a failed helicoil, the only option we can offer is to use the M14x1.5 drain plug kit p/n 1415A to enlarge the thead size from the factory M12x1.75 to M14x1.5.
You will need to purchase the larger M14x1.5 drain plug and washer from your local parts house.
KIT PART NO.
INSERT PART NO.
Honda and Acura
Oil Pan Repair
Approved by Honda
Oil Pan Repair “Aluminum Pans”
Kit contains:Drill, Cbore,Tap, Driver, Tapguide, 5 inserts 9.4mm length Drill has a large square, to turn the drill use a 1/2" 12 point socket or a tap socket p/n 70940