Discontinued - Weathershield Door Bottom Sweep - Replace with 840038 or 840007
Snap In / Push in design with barb
This original had a wood insert and a 1-1/4 inch wide Vinyl sweep.
Remove the old sweep and wood insert and install new sweep that is wider and replaces both the wood strip and old sweep.
 

Resources:

Video: How to Replace Snap-In Door Bottoms
Guide to Replacing Door Sweeps/Bottoms
Video: How to Replace Door Sweeps