Lincoln Service Parts 1 › Lincoln Electric 9SM21381 UPPER HEATSINK SUPPORT M21381 Lincoln Electric 9SM21381 UPPER HEATSINK SUPPORT M21381 Sale Price: $33.38 Original Price: $38.39 UPPER HEATSINK SUPPORT PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! UPPER HEATSINK SUPPORT PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1