Question 1

My Fill valve does not turn off completely.Response from Kohler said to take red cap off and purge water through it.  Anyone know what this means? All seals new and not leaking.

Accepted Answer

I used this tech tip to fix mine. It worked! My issue was related to calcium buildup under the yellow (or red for some) cap. I just scraped away the buildup, flushed it per Kohler video listed above and reassembled. Fixed! I am on well water... so my calcium levels were high before adding my water softener.

Question 2

How tall is this piece?  I need 9” one

Accepted Answer

It is adjustable. Set your height as you need.

Question 3

I am looking to replace a Fill Valve that has a yellow cap and the part number is 1188946. Is this the correct replacement part?

Accepted Answer

I looked at the old one and it had a number on the top, if the numbers match it will work

Question 4

Where is this fill valve (GP1083167) made?

Accepted Answer

Socrates:
Wrong answer. You should be answering the question asked. Don't you hate it when someone "attacks" you in their response?

I am not certain where it is made but I'd be surprised if it was somewhere other than ChAsia or Mexico.

My history of life with these, fwiw:
It appears to be a (copy of a/the ?) Fluidmaster (style) fill valve. I have replaced the arm float ball cock fill valves with a/various Fluidmaster unit in my rentals since 2000 or 2001 and remain very satisfied with them and their life. 
I have replaced the "rubber" washer/disk/valve when needed while also scrubbing/cleaning/wiping the seats (mating surfaces) of that disk AND the float of all scum/deposits that weigh it down and alter the fill level/boyancy.  
It IS often possible to clean that disk, the seats, and the float to obtain at the least a temporary fix; a NICE option when the valve is "screaming" or "whistling" and you can't immediately replace it.  Yes, there have been a few times when a new disk and through cleaning didn't solve the problem/leak and I replaced the entire fill valve.

Life is good!

ASIN	B001GZVSX6
ASIN	B001GZVSX6
Batteries Included?	No
Batteries Required?	No
Best Sellers Rank	#122,647 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #235 in Toilet Flush Valves
Color	Grey
Customer Reviews	4.6 4.6 out of 5 stars (9,489)
Customer reviews	4.6 4.6 out of 5 stars (9,489)
Date First Available	12 August 2012
Date First Available	12 August 2012
Finish	No Finish
Is Discontinued By Manufacturer	No
Item Package Quantity	1
Item Weight	249 g
Item model number	GP1083167
Item model number	GP1083167
Manufacturer	KOHLER
Manufacturer	KOHLER
Material	Plastic
Part number	GP1083167
Product Dimensions	29.85 x 9.53 x 7.62 cm; 249 g
Product Dimensions	29.85 x 9.53 x 7.62 cm; 249 g
Size	12.5" x 3.5" x 3"
Style	Plumbing Overstock

Kohler GP1083167 Fill Valve for all Class 5

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