With the tap M16 x 1.25 x 70 mm length you can enlarge the spark hole to fit the sleeve. Tap Size: M16 x 1.25mm. Spark Plug Thread Repair Tools 16pcs highly useful and top quality Plug Thread Repair Tools.

Number of Pieces: 16
Type: Spark Plug Thread Repair Kit
System of Measurement: Metric
Brand: Generic
Set or Single Item: Set