Fits ALL OLD Sunbeam Electric 18" TwinBlade Lawn Mowers with 4 Small Blades & Double Discharge. Light & Compact, Hi-Speed Blade Action Mulches Grass before it throws out Discharge at Front & Back of deck. Model #' s RE18C, RE181, RE182, RE183, RE184, RE185, RE18ST, RE18DS. Most #'s can be followed by a -B, -C, -1, -2 or Stencil for Models look at Belt for Part # Marked 47-81752. ***FYI*** ALL 47-81752-1 BELTS are Subbed 47-81752. Remove Spring filler on Motor Drive.