Originally posted by Sow&Steady
Kempower, the large seal is for the seal between the pipe and the manifold. Put this seal there and then you link up the three small springs. The smaller one is for sealing from the exhaust port of the engine to the manifold.
Thx but, perhaps my question was not completely clear. I do know why it's used for ,but I do not have a part number about it. I do not know where to buy spare ones...as I don't know the particular name for this seal.