Direct Replacement Fill Valves for Kohler 1-piece Toilets.
Now Plumbers can replace the fill valve on some of Kohler's most popular 1-piece toilets with a PRO747 Fill Valve from Fluidmaster. Available with(PRO747K) or without riser, the PRO747 has an adjustable refill to restore the toilet to factory specs. It can't be found at Big Box.

 ‣ Comes either with riser or by itself for quick replacment
 ‣ High refill port and refill adjuster ensure, efficient, consistent, performance
 ‣ Fill valve fits select Kohler toilets:
 ‣ K-3466 San Raphae, K-3467 San Raphael, K-3384-2 San Raphael, K-3386 Rialto, K-3524 Fountainhead, K-3492 Purist Hatbox, K-3607 San Raphael, and K-3393 San Raphael