Lincoln Service Parts 1 › Lincoln Electric 9SL9980 HEATSINK MACHINING/OUTPUT RECTIFIER L9980 Lincoln Electric 9SL9980 HEATSINK MACHINING/OUTPUT RECTIFIER L9980 Sale Price: $341.05 Original Price: $392.21 HEATSINK MACHINING/OUTPUT RECTIFIER PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! HEATSINK MACHINING/OUTPUT RECTIFIER PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1