Previously I used the age old grey quick connect. It did not always seat and leaked water, it also looked horrible. I installed Flush-M onto my Suzuki DF140. Looks and works great. 10/10 would recommend.
These are better than the grey seachoice version that have been around for years.
Costing a little more but water flow and aesthetics are 10x better.
Very happy with the quick connect. customer support is equally as impressive. My order went missing with local post and was replaced free.
These are well made! they pop on and off with a very satisfying 'snap' and are 100% watertight to the cowling.