CP42B-RKS-CL0P0AA4 is a 4-DIP red LED which was recently requested here at Digi-Key. This has gone obsolete but we do have a cross that is suitable in CP41B-RHS-CL0Q0EE4
These are almost identical and share the same footprint so would be suitable as a drop in replacement. The following table lists all of the attributes that are not shared exactly.
If there are any questions on this, please reply to this post and we will be happy to address them.