Originally Posted by mtjim
Does anyone have a Hitch Ball Size Chart for Airstreams? I mean Comprehensive - All years?
According to my notes, 1969 was the change-over point from the Marvel 2" coupler to the current 2 5/16" coupler size. My notes indicate that the 2" coupler was adopted "around" 1950
. It isn't uncommon, however, to find Vintage coaches that have had new couplers welded onto the hitch which could mean a coupler size other than the OEM size. Also, with the longer, heavier 1960s coaches, it is critical to shop very carefully for a 2" ball with the proper weight rating - - many of the 2" balls sold by mass merchandisers are under-rated for the larger coaches. According to my notes, Airstream installed only one coupler size throughout the coach line at least through the early 1980s (I haven't seen reference to the coupler specifications for the later model 32' - 34' coaches nor for those coaches with slides).