Was fitted to my 2014 and I believe it fits the Chieftain variants.
Towbar including nuts, bolts & full fitting instructions as well as towball, towball cover and socket mounting plate EC Type Approved. E-coated for long lasting protection. Flange fitting with two heights. Dedicated wiring kit, requiring no coding, with 13 pin euro socket. Simply run the harness from the leisure battery to the rear and Tee in the socket. Easy to fit. £140
Towbar including nuts, bolts & full fitting instructions as well as towball, towball cover and socket mounting plate EC Type Approved. E-coated for long lasting protection. Flange fitting with two heights. Dedicated wiring kit, requiring no coding, with 13 pin euro socket. Simply run the harness from the leisure battery to the rear and Tee in the socket. Easy to fit. £140