Black and Decker Electric Knife Blades, Fish Fillet Blade, Cords, and Replacement Parts. Part numbers: 283912-00, 283913-00, 178489-00 When to replace: Electric knife blades dull after a couple of years of regular use and should be replaced. Black and Decker Electric Knife Blades 283912-00 - JUST $7.95 in 3 pack $9.99, 3/$23.85 Black and Decker Electric Knife Fillet Fish Blades, 283913-00 - $9.79 When You Buy 6 $12.99, 6/$58.72 Black and Decker Electric Knife Plug-In Cord (WHITE) - $2.32 in 12 pack $3.99, 12/$27.80 Search Here: E-mail Us Privacy Policy Shipping Rates View Cart