Part Number: 16-0923 UOM: 1 - KIT Summary:The Heli-Coil thread repair kit is for early XL engine and transmission drain plug with thread size of 1/2" X 13 and length of .375" . This kit includes tap, installation tool, 6 inserts and complete instructions. Fitment: K 1952-1956 XL 1957-1990 Country of Origin: USA