Sealey Reverse Action Spark Plug Thread Chaser 12mm Application_Stainless Steel Blade Pitch: 18tpi

Blade Pitch: 18tpi

Fiesta IV (96on)

Chuck Size: 1/4"Hex Quick Release Type

Front Length: 71

Sealey Reverse Action Spark Plug Thread Chaser 12mm Application_Stainless Steel Blade Pitch: 18tpiSealey Reverse Action Spark Plug Thread Chaser 12mm Specially designed to repair damaged spark plug threads on modern petrol engines. Unique design allows the tool to be passed through the plug thread into the combustion chamber, then expanded to the correct size starting on the inner, undamaged threads. Traditional thread restorers rely on luck for the restored and undamaged threads to align. The first letter(s) of a Denso, NGK and Bosch plug code is