Lincoln Service Parts 2 › Lincoln Electric 9SS21389 TRANSFORMER & PLUG ASBLY S21389 Lincoln Electric 9SS21389 TRANSFORMER & PLUG ASBLY S21389 Sale Price: $386.40 Original Price: $444.36 TRANSFORMER & PLUG ASBLY PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! TRANSFORMER & PLUG ASBLY PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1