Lincoln Service Parts 1 › Lincoln Electric 9SG3557 MAIN TRANSFORMER ASBLY G3557 Lincoln Electric 9SG3557 MAIN TRANSFORMER ASBLY G3557 Sale Price: $4,382.41 Original Price: $5,039.77 MAIN TRANSFORMER ASBLY PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! MAIN TRANSFORMER ASBLY PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1