Lincoln K and KP Numbers › Lincoln Electric KP5149-1 GAS DIFFUSER Lincoln Electric KP5149-1 GAS DIFFUSER Sale Price: $9.75 Original Price: $10.92 GAS DIFFUSER PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000 Add To Cart Added! GAS DIFFUSER PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000