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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Korky 528 Toilet Fill Valve, Universal, Black(Packaging May Vary)

Product ID: 256371484

Details

Brand
Korky
Exterior finish
Metal Rubber
Inlet connection size
0.5 Inches
Item dimensions L x W x H
10.2 x 5.7 x
Material
Plastic

🔇Quiet operation reduces noise

⏱️Install in under 5 minutes

⚙️Universal fit 7.75-13.5'' adjustable

Description

🚽 Upgrade your throne with silent, universal ease!

DURABLE BUILD - Made with long-lasting chlorazone red rubber for reliability
SILENT PERFORMANCE - Engineered for whisper-quiet refilling—no more noisy flushes
COMPLETE REPAIR KIT - Includes all essential parts for a seamless upgrade
TOOL FREE INSTALLATION - Twist-lock adjustment makes DIY repairs a breeze
UNIVERSAL COMPATIBILITY - Fits most 1-piece & 2-piece toilets effortlessly

The Korky 528 Toilet Fill Valve is a universal, easy-to-install replacement part designed to fit most 1-piece and 2-piece toilets. Featuring a quiet fill mechanism and adjustable height from 7.75 to 13.5 inches, it ensures smooth, noise-free operation. The kit includes all necessary components for a quick installation under 5 minutes, crafted with durable chlorazone red rubber for long-lasting performance. Made in the USA and highly rated by thousands, it’s the smart choice for hassle-free toilet repairs.

Specifications

ASIN	B00002N6MY
ASIN	B00002N6MY
Best Sellers Rank	#89,107 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #160 in Toilet Flush Valves
Brand Name	Korky
Connector Type	Compression
Customer Reviews	4.6 4.6 out of 5 stars (5,271)
Customer reviews	4.6 4.6 out of 5 stars (5,271)
Date First Available	7 August 2012
Department	Unisex-Adult
Exterior Finish	Metal,Rubber
Global Trade Identification Number	00749306528022
Included Components	Includes: (1) Fill Valve, (1) Refill Tube, (1) Metal Refill Tube Clip, (1) Mounting Nut, (1) Cone Washer, (1) Coupling Nut, (1) and (1) Instructions
Inlet Connection Size	0.5 Inches
Inlet Connection Type	Compression
Is Discontinued By Manufacturer	Yes
Item Dimensions	10.2 x 5.7 x 19.7 centimeters
Item Type Name	Toilet Fill Valve
Item Weight	0.55 Pounds
Item model number	528
Manufacturer	Korky
Manufacturer	Korky
Manufacturer Part Number	528
Material Type	Plastic
Model Number	528
Number of Items	1
Number of Packs	1
Number of Pieces	7
Outlet Connection Size	0.5 Inches
Outlet Connection Type	Barb
Product Dimensions	10.16 x 5.72 x 19.69 cm; 249.48 g
Set Name	Toilets
Size	Universal
Specification Met	IAPMO
Thread Size	1/2 inch
Thread Type	NPT
UPC	749306528022
Unit Count	1 Count
Valve Type	Float Valve

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