Sealey Reverse Action Spark Plug Thread Chaser 14mm MS003 Ex Display 2 2 x PZ-Type socket

2 2 x PZ-Type socket screwdriver bits

250 and 300mm sizes have a graduated scale on the fixed jaws

// Also ideal for roadside repairs

Battery: 7

Sealey Reverse Action Spark Plug Thread Chaser 14mm MS003 Ex Display 2 2 x PZ-Type socketSpecially 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 the thread size identification. For Champion brand