do not know the part number, but they both look like they may work. for that price I would be tempted to get them both and see which one is best.
I may be doing that myself - one broke in my hw wall 277 and is being held together with electrical tape. has held for four years but was just looking at it today to figure the best way to fix it.
HTT: "EscapeII" 2016 Shamrock 23WS (current)
PUP: "Escape" 2010 Rockwood HW 277 (gone)
TV: "Bruce" 2011 Dodge Durango V8 Hemi Crew
Just us gals (me, Sis and our daughters)
Traveled 19520 miles and 209 nights in 7 years and counting