kohler canister flush valve seal
Worth a lookShows searches that convert (10.3% search→purchase), but brand-locked demand (top 5 brands take 93% of clicks) keeps it on the watch list.
Conversion
Great10.3%search→purchase rate — share of searches ending in a sale
Avg price
Great$17.91avg listing price — sweet spot $15–$100
Market size
Great$992K$992K/yr · 537K searches
Price range
Good$6.74–$30.90cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Okay3.1%return rate — above 5% kills the launch gate
Competition
Okay60%top-5 click share — leaders hold, buyers still browse
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Review moat
Okay2,397.93avg incumbent reviews — the moat a new listing must climb
Growth
Bad-0.5%90-day search growth — must beat 0% to launch
Brand share
Bad93%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, kohler canister flush valve seal is a $992K/yr Amazon United States market (537K searches/yr). The top 5 brands hold 93% of demand. Demand peaks in Apr–May–Jun–Jul. Verdict: Worth a look — 51/100.
Data updated Jul 29, 2026 · scored weekly · How we score niches
kohler canister flush valve seal market data
- Units sold / yr
- 40K–50K
- avg 1,500–2,000/product
- Revenue / yr
- $716K–$896K
- units × avg price
- Conversion rate
- 10.3%
- Avg BSR
- #1,688
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 93%
- Out of stock
- 0.0%
- Avg brand age
- 39 months
- Avg seller age
- 145 days
Competition & brand share
The top 5 products take 60% of clicks — established leaders, but buyers still shop beyond them.Brands
10 rising
Sellers
120
Top-5 brand share
93%
Top 20: 100%
Top-5 click share
60%
Top 20: 93%
Open market
5%
- Kohler80%
- Ullnosoo4%
- hansengroyi4%
- RNTKAB3%
- Qualihome2%
- Hidnvefen2%
- Open — no brand owns it (4 brands, 5%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -0.5% search growth over the last 90 days.Peak months: Apr, May, Jun, Jul · busiest ÷ quietest = 4.8×
Top kohler canister flush valve seal search terms
- kohler toilet tank parts256K/yr
- kohler toilet parts40K/yr
- kohler flush valve kit27K/yr
- kohler parts replacement37K/yr
- kohler toilet flush valve kit14K/yr
- kohler toilet replacement parts18K/yr
- kohler flush valve21K/yr
- kohler gp105929112K/yr
- gp105929113K/yr
- kohler flush valve seal13K/yr
Top kohler canister flush valve seal products on Amazon
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Kohler Genuine Part Gp1083167 Silent Fill Valve Kit For All Kohler Class Five Toilets 12.5 x 3.5 x 3
Kohler$17.944.6★10,056 rev
KOHLER GENUINE PART 1188998 2 Toilet Canister Flush Valve Kit
Kohler$17.574.7★1,435 rev
Kohler Genuine Part 1083980 3 Toilet Canister Flush Valve Kit
Kohler$21.064.6★4,819 rev
KOHLER Genuine Part Gp1059291 Canister Seal Seal for All Single Flush Class 5 and Class 6 Canister Toilets Chemical Resistant
Kohler$6.744.8★7,649 rev
KOHLER 3 Toilet Flush Valve Kit Black Compatible with Kohler Wellworth toilets 3 Canister with a 3 Outlet GENUINE PART 1069722
Kohler$19.634.6★2,533 rev
Newest
by launch date
1216611 Flush Valve Kit Canister Valve Assembly Replacement for Kohler Cimarron Toilets 1.28 GPF AquaPiston Flush Valve with Gasket
LavishStream$26.445 rev
2 Toilet Canister Flush Valve Kit for Kohler 1216611 Compatible with Kohler 1.28 gaff Cimarron Toilets 3 Canister with a 2 Outlet Toilet Repair Kit Inside Tank
hansengroyi$25.528 rev
Flush Valve Seal for Kohler GP1059291 2 Pack Upgraded Silicone Canister Seal Replacement for Kohler Toilets Stops Leaks & Ghost Flushing Easy Install Fits K-GP1059291 K-4436 Models
todbown$7.9745 rev
2 Toilet Canister Flush Valve Kit for Kohler 1188999 Compatible with Kohler Cimarron Tank 3 Canister with a 2 Outlet
hansengroyi$26.863 rev
Canister Repair Kit Compatible with Kohler GP1229656 for Single Flush Canister Toilets Includes Center Guide Cap & Chain WC Tank Replacement Kit
hansengroe$10.3317 rev
Trending
90-day click momentumFlush Valve Seal for Kohler GP1059291 2 Pack Upgraded Silicone Canister Seal Replacement for Kohler Toilets Stops Leaks & Ghost Flushing Easy Install Fits K-GP1059291 K-4436 Models
todbown$7.974.7★
1216611 Flush Valve Kit Canister Valve Assembly Replacement for Kohler Cimarron Toilets 1.28 GPF AquaPiston Flush Valve with Gasket
LavishStream$26.443.7★
2 Toilet Canister Flush Valve Kit for Kohler 1216611 Compatible with Kohler 1.28 gaff Cimarron Toilets 3 Canister with a 2 Outlet Toilet Repair Kit Inside Tank
hansengroyi$25.523.5★
2 Toilet Canister Flush Valve Kit for Kohler 1188999 Compatible with Kohler Cimarron Tank 3 Canister with a 2 Outlet
hansengroyi$26.865.0★
Canister Repair Kit Compatible with Kohler GP1229656 for Single Flush Canister Toilets Includes Center Guide Cap & Chain WC Tank Replacement Kit
hansengroe$10.334.4★
What buyers say about kohler canister flush valve seal
What buyers praise and complain about, mined from review topics.What buyers love
“Easy fix”
“Fits Like a Glove”
“As advertised”
“The build quality feels solid”
“Great value”
“Easy as pie”
“Surprising how much better the toilet works now”
“No leaks”
“Instructions are clear”
“Just another DIY repair that most anyone can accomplish”
What buyers complain about
“It leaks”
“Random noises”
“Broken again, 1 year later”
“Not an adequate replacement quality wise”
“Not effective for me”
“a bit smaller”
“Item was used”
“INSTALLATION is terrible”
“it came with a substantial cost”
“I found it hard to believe that was a design flaw”
Top return reasons
Common questions
- Is kohler canister flush valve seal profitable to sell on Amazon United States?
- The niche generates $992K/yr across 27 tracked products. 2 of 4 products launched in the last 360 days are still selling. 90-day search growth is -0.5%. Flapen's verdict: Worth a look (51/100).
- How competitive is the kohler canister flush valve seal niche?
- 10 brands and 120 sellers compete. The top 5 products take 60% of clicks and top 5 brands hold 93% of demand.
- What do buyers complain about in kohler canister flush valve seal?
- Top complaints mined from reviews: Leak-Proof, Noise Level, Durability. The return rate is 3.1%.
- When does demand for kohler canister flush valve seal peak?
- Demand peaks in Apr–May–Jun–Jul; the busiest month runs 4.8× the quietest.
- What does it cost to enter the kohler canister flush valve seal niche?
- Listings span $6.74–$30.90; the average listing price is $17.91 (sweet spot $15–$100). The average incumbent carries 2,398 reviews — the moat a new listing must climb.