Lincoln Service Parts 2 › Lincoln Electric 9SS28937-4 AIR FILTER S28937-4 Lincoln Electric 9SS28937-4 AIR FILTER S28937-4 Sale Price: $39.64 Original Price: $45.59 AIR FILTER PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! AIR FILTER PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1