Toilet Fill Valve Market Report: Sales Volume, Market Share, Leading Brands & Market Trends
Toilet Fill Valve sales on Amazon US totaled 62,850 units in July 2026 (▲ 21.7% vs. the prior month), generating an estimated $1,090,077 in revenue across the 50 top-ranked ASINs for this search term. Demand is heavily concentrated at the top of the ranking — the ten best performers capture 73.2% of unit volume and 66.7% of revenue, while a typical listing is priced at $20.56. The keyword itself pulled 20,949 Amazon queries over the same period (▲ 11.2% MoM).
Zooming out to the 12-month window ending July 2026, the toilet fill valve Top 50 moved 616,300 units and $10,416,072 in cumulative sales — an average of 51,358 units and $868,006 per month. Monthly throughput topped out at 62,850 units in July 2026 and dipped to 33,500 in May 2026, leaving the latest reading 16.9% higher than August 2025.
Toilet Fill Valve Sales Trend (Trailing 12 Months)
Based on the top 50 ASINs by monthly sales for this keyword
2025/08
2025/09
2025/10
2025/11
2025/12
2026/01
2026/02
2026/03
2026/04
2026/05
2026/06
2026/07
Monthly Sales 2026/07
62.9K
▲ 21.7% MoM
Monthly Revenue 2026/07
$1.1M
▲ 19.4% MoM
Top 10 Market Share 2026/07
73.2%
Toilet Fill Valve Market Share & Sales Concentration on Amazon US — July 2026
The most-sold toilet fill valve listing on Amazon US in July 2026 is ASIN B07N7BH94Q (Brand: Fluidmaster), which sold 10,000 units at $14.97 apiece — equal to 15.9% of every unit tracked in this report.
The Top 10 ASINs account for 46,000 units and $727,030 in July 2026 — 73.2% of unit volume and 66.7% of revenue among all 50 ranked ASINs in this report.
Sales Volume of Top ASINs for 'Toilet Fill Valve' on Amazon
July 2026
Is 73.2% Top 10 share highly concentrated?
Ask AI to evaluate competition, market structure, and entry opportunities using ’s tracked Amazon sales, ranking, and keyword data.
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Top 5 Volume Share breakdown
B07N7BH94Q
Fluidmaster 400H Universal Toilet Fill Valve, High Performance, 1-Pack | Quiet operation, Adjustable tank and bowl water levels, EZ-Twist 9–14 in. height, Fits most toilet brands
10K
▲ 0.0%vs. prior month
$149.7K
latest month
12-month trend
B09NYLJ1FZ
Fluidmaster K-400H-039 Toilet Fill Valve & 2-Inch Flapper Repair Kit | Includes high-performance fill valve and adjustable 2 in. flapper, Helps fix running or slow-filling toilets
10K
▲ 25.0%vs. prior month
$169.7K
latest month
12-month trend
B001GZVSX6
Kohler Genuine Part Gp1083167 Silent Fill Valve Kit For All Kohler Class Five Toilets,12.5" x 3.5" x 3"
6K
▲ 20.0%vs. prior month
$106.7K
latest month
12-month trend
B0002YVK44
Fluidmaster 400AKRP10 Universal Toilet Repair Kit, 2-Inch Flush Valve | Includes fill valve, flush valve, flapper, tank lever and gasket, Fits most 1.6–3.5 GPF toilets, Easy DIY install
5K
▲ 25.0%vs. prior month
$106.2K
latest month
12-month trend
B004TKTX14
Korky QuietFILL Platinum Toilet Fill Valve - Universal Fits 99% of Toilets - Easy Height Adjust for Fast Install, 528MP
5K
▲ 25.0%vs. prior month
$49.9K
latest month
12-month trend
B00068UUTM
Eastman 12 Inch Flexible Toilet Connector, 7/8 Inch Ballcock x 3/8 Inch Compression, Stainless Steel Braided Hose, 48088
3K
▲ 50.0%vs. prior month
$17.4K
latest month
12-month trend
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Best Toilet Fill Valve Brands on Amazon US — Top 3 Brand Sales Concentration (July 2026)
Fluidmaster is the best-performing toilet fill valve brand in July 2026, moving 29,000 units across 5 ASINs for 63.0% of Top 10 volume. Kohler follows with 8,000 units (17.4%), ahead of Korky on 5,000 units (10.9%).
With 5 brands splitting the Top 10 and 91.3% of volume sitting with three of them, this is a concentrated shelf — the leaders hold multiple listings or one very high-velocity ASIN, so a new entrant competes against established review moats rather than an open field. Average selling prices among the leaders run from $9.98 to $18.88, which frames the price band a competing listing has to justify.
Brand share of Top 10 volume
Fluidmaster
5 ASINs in Top 10
63.0%
Units
29K
Revenue
$488K
Avg. price
$16.33
B07N7BH94Q
$14.97·★4.6·17.2K revsFluidmaster 400H Universal Toilet Fill Valve, High Performance, 1-Pack | Quiet operation, Adjustable tank and bowl water levels, EZ-Twist 9–14 in. height, Fits most toilet brands
Units sold10KB09NYLJ1FZ
$16.97·★4.6·4.5K revsFluidmaster K-400H-039 Toilet Fill Valve & 2-Inch Flapper Repair Kit | Includes high-performance fill valve and adjustable 2 in. flapper, Helps fix running or slow-filling toilets
Units sold10KB0002YVK44
$21.23·★4.5·7.8K revsFluidmaster 400AKRP10 Universal Toilet Repair Kit, 2-Inch Flush Valve | Includes fill valve, flush valve, flapper, tank lever and gasket, Fits most 1.6–3.5 GPF toilets, Easy DIY install
Units sold5KB002C1AVV8
$16.89·★4.4·7.5K revsFluidmaster 5403 Universal 3-Inch Toilet Flapper, Water Saving | Silicone seal lasts up to 10X longer, Adjustable dial saves water, Kink-free chain, Resists chlorine and hard water
Units sold3KB004TPTFEE
$11.57·★4.7·6.2K revsFluidmaster 703AP4 Fill Valve for Glacier Bay & Niagara Toilets | Direct replacement for Glacier Bay and Niagara flapperless toilets, Faster refill, Easy installation, Instructions included
Units sold1K
Kohler
2 ASINs in Top 10
17.4%
Units
8K
Revenue
$146.8K
Avg. price
$18.88
B001GZVSX6
$17.29·★4.6·10.1K revsKohler Genuine Part Gp1083167 Silent Fill Valve Kit For All Kohler Class Five Toilets,12.5" x 3.5" x 3"
Units sold6KB003MH314U
$20.48·★4.6·5.1K revsKOHLER Silent Fill Toilet Valve Kit, Genuine Part GP1138930, Adjustable with Multiple Fill-Rate Inserts
Units sold2K
Korky
1 ASIN in Top 10
10.9%
Units
5K
Revenue
$49.9K
Avg. price
$9.98
B004TKTX14
$9.98·★4.5·6.7K revsKorky QuietFILL Platinum Toilet Fill Valve - Universal Fits 99% of Toilets - Easy Height Adjust for Fast Install, 528MP
Units sold5K
Trending Toilet Fill Valve Products — Growth Leaders & New Top 10 Entrants
Based on July 2026 data, this shortlist surfaces the two kinds of ASIN worth keeping an eye on — the ones that just broke into the Top 10, and the ones growing fastest month over month. On the growth side, B00002N6MY leads positive momentum with ▲ 1900.0% MoM growth on 1K units, with B003MH314U close behind at ▲ 100.0% MoM on 2K units.
The two signals carry different weight. A fresh entrant means share has already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date. A steep growth rate works as the earlier warning: it marks demand that is still compounding, usually a month or two before the ranking catches up to it.
B00002N6MY
Korky QuietFILL Toilet Fill Valve - Universal Fits 99% of Toilets - Easy Height Adjust for Fast Install, 528
Price
$8.66
Rating
4.6
Reviews
5.6K
Latest month sales
B003MH314U
KOHLER Silent Fill Toilet Valve Kit, Genuine Part GP1138930, Adjustable with Multiple Fill-Rate Inserts
Price
$20.48
Rating
4.6
Reviews
5.1K
Latest month sales
B01E1E1K1S
Fluidmaster PerforMAX Universal Toilet Repair Kit, 2-Inch Valve | Includes fill valve, flush valve, flapper, tank lever and gasket, 2X refill rate, Fits most high-efficiency toilets
Unlock to view ASIN details and product titles
Price
$21.23
Rating
4.4
Reviews
7.5K
Latest month sales
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