Lincoln Service Parts 1 › Lincoln Electric 9SM15999 DIODE HEAT SINK WELDMENT M15999 Lincoln Electric 9SM15999 DIODE HEAT SINK WELDMENT M15999 Sale Price: $222.63 Original Price: $256.02 DIODE HEAT SINK WELDMENT PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! DIODE HEAT SINK WELDMENT PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1