Nope.... not according to the book.
B20 parts catalog, Sida 8a, Gruppe 4, drawing 11936:
183 means 1800ES.
Bracket [35] = p/n 676274 (shared with 140 M41s)
rubber cushion [41] = 663605 (common part)
Oh... and crossmember [38] = 682672 (unique to 1800s)