Lincoln Service Parts 1 › Lincoln Electric 9SM13781 SPARK GAP BASE M13781 Lincoln Electric 9SM13781 SPARK GAP BASE M13781 Sale Price: $902.95 Original Price: $1,038.39 SPARK GAP BASE PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! SPARK GAP BASE PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1