Does the Korky 818BP match up/replace the Kohler 85406 flush valve?

According to Korky's website: "It has a universal design to fit all brands and features a wide range of adjustability to fit most 2-piece and 1-piece toilets. Designed to fit more toilets, the QuietFill toilet fill valve adjusts from 7-3/4 inch to 13-1/2 inch."

if this is a prime item, why is the delivery date a month away?

Go to Lowes or Home depot...in stock and grab a Starbucks double express :-) on the way...

When I connect to the water supply line, the connection is loose, and water leaks out. Is the connection point on the Korky supposed to be empty?

The red gasket at the bottom should be inside the tank, the large nut is then installed hand tight and then snugged a bit more but not too tight. if you do this, there is no way that water can leak out of the tank at that point, unless the tank is cracked.

Is this fill valve by Korky superior to that of Fluidmaster (as in durability and preveting toilet leak)?

The valves we were sent did NOT have the gasket on the bottom included. Was not noticed at first, why would we think it didn’t have needed parts. Put in and leaked everywhere! Finally figured out why. So just be aware of that.

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🚽 Upgrade your throne with silent, smart plumbing power!

SMART STRAINER DESIGN - Built-in strainer traps sediment, ensuring smooth valve operation and easy maintenance—keep your system running flawlessly.
EFFORTLESS UNIVERSAL FIT - Adjusts seamlessly from 7-3/4" to 13-1/2" to fit nearly every toilet tank size—no guesswork needed.
RELIABLE 5 YEAR WARRANTY - Backed by a 5-year warranty, this fill valve guarantees peace of mind and long-term performance.
WHISPER QUIET PERFORMANCE - Engineered for ultra-quiet refill cycles, eliminating disruptive bathroom noise and boosting your home’s zen vibe.
QUICK TWIST LOCK INSTALLATION - Innovative twist-lock adjustment means no plumber required—get your toilet fixed fast and hassle-free.

The Korky 528 Toilet Fill Valve is a universal, black plastic valve designed to fit most 1- and 2-piece toilets with adjustable sizing from 7-3/4" to 13-1/2". It features an ultra-quiet refill mechanism, a sediment-catching strainer for easy servicing, and a twist-lock installation system. Backed by a 5-year warranty, it fixes common toilet issues like running, noisy, or slow refills, making it a reliable upgrade for any modern bathroom.

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Material	Plastic
Brand	Korky
Item dimensions L x W x H	10.2 x 5.7 x 19.7 Centimeters
Exterior Finish	Black
Outlet Connection Type	Flange
Specification Met	Not Applicable
Global Trade Identification Number	00749306528022
Manufacturer	Korky
UPC	749306528022
Item model number	528
Product Dimensions	10.16 x 5.72 x 19.69 cm; 249.48 g
ASIN	B00002N6MY

Korky 528 Toilet Fill Valve, Universal, BLACK

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