Lincoln Service Parts 1 › Lincoln Electric 9SL11566-4 HARMONIC FILTER ASBLY L11566-4 Lincoln Electric 9SL11566-4 HARMONIC FILTER ASBLY L11566-4 Sale Price: $1,610.05 Original Price: $1,851.56 HARMONIC FILTER ASBLY PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! HARMONIC FILTER ASBLY PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1