Lincoln Service Parts 1 › Lincoln Electric 9SG6911-37 FILTER HEAD, MACHINING G6911-37 Lincoln Electric 9SG6911-37 FILTER HEAD, MACHINING G6911-37 Sale Price: $3,752.36 Original Price: $4,315.21 FILTER HEAD, MACHINING PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! FILTER HEAD, MACHINING PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1