Lincoln Service Parts 1 › Lincoln Electric 9SM13124 THYRISTOR HEAT SINK ASBLY AC-1200/150 M13124 Lincoln Electric 9SM13124 THYRISTOR HEAT SINK ASBLY AC-1200/150 M13124 Sale Price: $1,762.80 Original Price: $2,027.22 THYRISTOR HEAT SINK ASBLY AC-1200/150 PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! THYRISTOR HEAT SINK ASBLY AC-1200/150 PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1