By upgrading your existing coupling, it benefits from the improved features and reliability of the new generation. To upgrade a manual coupling, all you have to do is change the mechanism, while power-assisted couplings must be adapted to make use of existing indication kits.The upgrade kit includes everything you need.Improved mechanism + CSM sensor for signalling open/closed coupling + bushings etc. found in the new generation.Note! Due to a change in dimensions, the bushings must also be replaced to allow mounting of the replacement mechanism.