Lincoln Service Parts 1 › Lincoln Electric 9SM24233 UPPER MTR CVR ST250/450 3.5 M24233 Lincoln Electric 9SM24233 UPPER MTR CVR ST250/450 3.5 M24233 Sale Price: $433.24 Original Price: $498.23 UPPER MTR CVR ST250/450 3.5 PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! UPPER MTR CVR ST250/450 3.5 PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1