Lincoln K and KP Numbers › Lincoln Electric KP4379-1-B25 SA GAS DIFFUSER, 350A Lincoln Electric KP4379-1-B25 SA GAS DIFFUSER, 350A Sale Price: $557.37 Original Price: $624.25 SA GAS DIFFUSER, 350A PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 25.000 Add To Cart Added! SA GAS DIFFUSER, 350A PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 25.000