If you have stainless clad resin scuppers (bright stainless flange, black or dark grey interior) this is the flapper and mounting ring kit you need!
Stainless clad resin scuppers have a groove about 3/4" inside the flange that holds a mounting ring. The flapper screws to the flat on the mounting ring. Sometimes the whole mounting ring and flapper assembly blows out. That's when you need this kit. (see picture A)
If you need to replace the 1-5/8" flapper but the mounting ring is still there (see picture B) , you need part #PRE56677KT. Click Here!
These scuppers are used extensively on many boats. If your flapper measures 1-5/8" across and is stainless capped resin (not solid stainless), this is your repair kit!