I have 2002 ls1 Monaro with 2ma marked on back of head and gasket with 12573949.i can only find replacement gaskets with 12498544 part number. Does anyone no if there suitable.
^^^ This. It's not unusual for parts to be superseded by better designed parts that will have a different part number, means they usually stop manufacturing the original.
^^^ This. It's not unusual for parts to be superseded by better designed parts that will have a different part number, means they usually stop manufacturing the original.