delta kitchen faucet cartridge
Skip itSoft demand (-26.7% this quarter) — this niche doesn't clear our bar today.
Conversion
Incredible13.4%search→purchase rate — share of searches ending in a sale
Avg price
Incredible$23.69avg listing price — sweet spot $15–$100
Price range
Incredible$17.78–$41.58cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Review moat
Good782.33avg incumbent reviews — the moat a new listing must climb
Market size
Okay$142K$142K/yr · 45K searches
Brand share
Okay87%top-5 brand share — brands hold most of the demand
Returns
Okay5.0%return rate — above 5% kills the launch gate
Competition
Bad84%top-5 click share — a locked-up shelf
Growth
Bad-26.7%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, delta kitchen faucet cartridge is a $142K/yr Amazon United States market (45K searches/yr). The top 5 brands hold 87% of demand. Demand peaks in Jan–Feb–Dec. Verdict: Skip it — 44/100.
Data updated Jul 29, 2026 · scored weekly · How we score niches
delta kitchen faucet cartridge market data
- Units sold / yr
- 6K–8K
- avg 500–750/product
- Revenue / yr
- $142K–$190K
- units × avg price
- Conversion rate
- 13.4%
- Avg BSR
- #48
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 89%
- Out of stock
- 9.1%
- Avg brand age
- 25 months
- Avg seller age
- 173 days
Competition & brand share
The top 5 products capture 84% of clicks — a locked-up shelf that new listings rarely crack.Brands
8 rising
Sellers
32
Top-5 brand share
87%
Top 20: 100%
Top-5 click share
84%
Top 20: 100%
Open market
6%
- DELTA35%
- NIDIOCIP23%
- Ahenbal11%
- LOWCUS10%
- SOASEMBE8%
- PRFCTTY7%
- Open — no brand owns it (2 brands, 6%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -26.7% search growth over the last 90 days.Peak months: Jan, Feb, Dec · busiest ÷ quietest = 2.1×
Top delta kitchen faucet cartridge search terms
- rp5058714K/yr
- delta rp5058713K/yr
- rp50587 delta cartridge11K/yr
- rp50587 delta cartridge valve replacement3K/yr
- delta rp50587 cartridge4K/yr
Top delta kitchen faucet cartridge 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 9 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Delta Faucet RP50587 Single Handle Valve Cartridge Chrome Small
DELTA$41.584.6★5,259 rev
RP50587 Cartridge Valve Replacement for RP50587 Delta Cartridge Compatible with DST Single Handle Kitchen and Lavatory Faucets - Includes Allen Wrench for Easy Installation
NIDIOCIP$19.214.6★313 rev
RP50587 Cartridge Replacement for Delta Single Handle Kitchen and Lavatory Faucets Works with DIAMOND Seal Technology Models Featuring a 36 mm Motion (Include RP51503 Bonnet Nut
Ahenbal$23.274.0★461 rev
RP50587 Delta Faucet Cartridge Replacement for DST Single Handle Kitchen and Lavatory Sink Faucets Repair Parts Compatible with Delta RP50587 Cartridge Valve w/ RP51503 Bonnet Nut
SOASEMBE$21.563.6★69 rev
RP50587 Single Handle Compatible with Delta Repair Kit Lavatory Kitchen Shower Faucet Valve Assembly Works with DIAMOND Seal Technology Models Featuring a 36 mm Motion Cartridge RP51503 Bonnet Nut
PRFCTTY$21.304.4★391 rev
Newest
by launch dateRP50587 Delta Faucet Cartridge Replacement for DST Single Handle Kitchen and Lavatory Sink Faucets Repair Parts Compatible with Delta RP50587 Cartridge Valve w/ RP51503 Bonnet Nut
SOASEMBE$21.5669 rev
RP50587 Cartridge Valve Replacement for Delta Faucet with Allen Wrench
TOVEN-RV$17.7815 rev
RP50587 Cartridge Replacement for Delta Most DST Single Handle Kitchen and Bathroom Faucets Compatible with 36mm DIAMOND Seal Technology Models Includes RP51503 Bonnet Nut
Sxtrrdnary$24.8331 rev
LOWCUS Faucet Cartridge Replacement for Delta RP50587 DST 1-Pack Fits Delta Diamond Kitchen Lavatory Valve Single Handle Fix Leak or Drip Squeak Temperature Issues Includes Handle Limit Stop
LOWCUS$19.55251 rev
LOWCUS Faucet Cartridge Replacement for Delta RP50587 DST 1-Pack Fits Delta Diamond Kitchen Lavatory Valve Single Handle Includes Bonnet Nut Fix Leak or Drip Squeak Temperature Issues With Limit
LOWCUS$24.11251 rev
Trending
90-day click momentumRP50587 Cartridge Valve Replacement for Delta Faucet with Allen Wrench
TOVEN-RV$17.784.8★
RP50587 Delta Faucet Cartridge Replacement for DST Single Handle Kitchen and Lavatory Sink Faucets Repair Parts Compatible with Delta RP50587 Cartridge Valve w/ RP51503 Bonnet Nut
SOASEMBE$21.563.6★
LOWCUS Faucet Cartridge Replacement for Delta RP50587 DST 1-Pack Fits Delta Diamond Kitchen Lavatory Valve Single Handle Includes Bonnet Nut Fix Leak or Drip Squeak Temperature Issues With Limit
LOWCUS$24.114.2★
RP50587 Cartridge Valve Replacement for RP50587 Delta Cartridge Compatible with DST Single Handle Kitchen and Lavatory Faucets - Includes Allen Wrench for Easy Installation
NIDIOCIP$19.214.6★
LOWCUS Faucet Cartridge Replacement for Delta RP50587 DST 1-Pack Fits Delta Diamond Kitchen Lavatory Valve Single Handle Fix Leak or Drip Squeak Temperature Issues Includes Handle Limit Stop
LOWCUS$19.554.2★
What buyers say about delta kitchen faucet cartridge
What buyers praise and complain about, mined from review topics.What buyers love
“installed it myself”
“Fit perfect”
“No more annoying leaks or wasted water”
“As described”
“affordable price”
“Good quality”
“Went in easy”
“Works great”
“Right component for a easy fix”
“feels very durable so far”
What buyers complain about
“Leaked immediately”
“the dimensions are actually too small”
“flow rate out of it is so low to be unusable”
“Can't vouch for durability since I just installed it”
“I'm less than impressed with the build quality”
“Now it sounds like a screeching door closer”
“I gave it a day to see if it would improve but it did not”
“Limited instructions”
“Not sure if the problem was the installation or the product”
“set screw does not tighten at handle”
Top return reasons
Common questions
- Is delta kitchen faucet cartridge profitable to sell on Amazon United States?
- The niche generates $142K/yr across 9 tracked products. 2 of 5 products launched in the last 360 days are still selling. 90-day search growth is -26.7%. Flapen's verdict: Skip it (44/100).
- How competitive is the delta kitchen faucet cartridge niche?
- 8 brands and 32 sellers compete. The top 5 products take 84% of clicks and top 5 brands hold 87% of demand.
- What do buyers complain about in delta kitchen faucet cartridge?
- Top complaints mined from reviews: Leak-Proof, Size-Overall, Spray/Flow. The return rate is 5.0%.
- When does demand for delta kitchen faucet cartridge peak?
- Demand peaks in Jan–Feb–Dec; the busiest month runs 2.1× the quietest.
- What does it cost to enter the delta kitchen faucet cartridge niche?
- Listings span $17.78–$41.58; the average listing price is $23.69 (sweet spot $15–$100). The average incumbent carries 782 reviews — the moat a new listing must climb.