Is this for a 13' Casita
? If it's for a 16' or 17' Casita
, you should be using a 3" receiver. On the 2004 Toyota Sienna minivan I used to tow my 17' 2010 Spirit Deluxe, it was necessary to UPGRADE the Class 2 receiver Toyota had installed as an OEM part. I also had to upgrade from a 4-pin electrical
connector to a 7-pin connector.