Lincoln Service Parts 1 › Lincoln Electric 9SG4304-1 MAIN TRANSFORMER ASBLY G4304-1 Lincoln Electric 9SG4304-1 MAIN TRANSFORMER ASBLY G4304-1 Sale Price: $1,870.34 Original Price: $2,150.89 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