Straight(ish) swap for a twenty year old existing unit.
It was a reasonably straight swap for the twenty year old existing unit and could be changed without disturbing the cistern. However, there are a couple of points worth mentioning:
1. The top button fitting that sits above the actuation mechanism was not the same as my old unit (D1D) so I had to reuse the existing fitting, which was a simple job. It just unclips and slides off. Obviously the design of the push button fitting has changed over the years.
2. The bottom seal is not pre-fitted, but care is needed to make sure the three components go on in the correct order. I just referred to the existing unit.
Hopefully this one will last another twenty years, despite the apparent flimsiness. It does seem expensive for what it is though.
Verified purchase: YesCondition: New