---
title: "Delta Kitchen Faucet Cartridge — $142K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/delta-kitchen-faucet-cartridge"
last_updated: "2026-08-08T22:46:07.570Z"
locale: en
meta:
description: "Niche score 44/100 · $142K/yr market · 45K searches/yr · $23.69 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 44/100 · $142K/yr market · 45K searches/yr · $23.69 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Delta Kitchen Faucet Cartridge — $142K/yr Amazon US Niche (2026) - Flapen"
---
# **delta kitchen faucet cartridge**
**Skip it**
Soft demand (-26.7% this quarter) — this niche doesn't clear our bar today.
Market size 31Growth 12Conversion 96Competition 14Returns 25Price range 95Avg price 95Brand share 30Review moat 68Quality gap 76
**Conversion**
**Incredible****13.4%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Incredible****$23.69**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$17.78–$41.58**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Great****4.3★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Good****782.33**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Okay****$142K**
$142K/yr · 45K searches
**Brand share**
**Okay****87%**
top-5 brand share — brands hold most of the demand
**Returns**
**Okay****5.0%**
return rate — above 5% kills the launch gate
**Competition**
**Bad****84%**
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 ~~](https://flapen.com/research/methodology)
## **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.
2K1KHoliday '24Spike '25Black Friday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jan, Feb, Dec · busiest ÷ quietest = 2.1×
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/delta-kitchen-faucet-cartridge/trend)
## **Top delta kitchen faucet cartridge search terms**
- **rp50587**14K/yr-25.6%11.7% conv. - **delta rp50587**13K/yr-20.6%12.6% conv. - **rp50587 delta cartridge**11K/yr-28.5%14.7% conv. - **rp50587 delta cartridge valve replacement**3K/yr-41.3%21.4% conv. - **delta rp50587 cartridge**4K/yr-38.7%13.1% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/delta-kitchen-faucet-cartridge/search-terms)
## **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.
0%10%$14K20%$28K30%$43K40%$57K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 9 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Delta Faucet RP50587 Single Handle Valve Cartridge Chrome Small**DELTA**$41.58**4.6★5,259 rev](https://www.amazon.com/dp/B00263BYSQ) [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**$19.21**4.6★313 rev](https://www.amazon.com/dp/B0DWMC6XSK) [3**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**$23.27**4.0★461 rev](https://www.amazon.com/dp/B0D9N5JNCR) [4**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**$21.56**3.6★69 rev](https://www.amazon.com/dp/B0G4W73L7K) [5**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**$21.30**4.4★391 rev](https://www.amazon.com/dp/B0DH1ZJ7XX)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**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**$21.56**69 rev7mo ago](https://www.amazon.com/dp/B0G4W73L7K) [**RP50587 Cartridge Valve Replacement for Delta Faucet with Allen Wrench**TOVEN-RV**$17.78**15 rev8mo ago](https://www.amazon.com/dp/B0FZQGZ5B1) [**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**$24.83**31 rev10mo ago](https://www.amazon.com/dp/B0FQ25ZS16) [**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**$19.55**251 rev10mo ago](https://www.amazon.com/dp/B0FQC8RH75) [**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**$24.11**251 rev10mo ago](https://www.amazon.com/dp/B0FQC8TGMN)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**RP50587 Cartridge Valve Replacement for Delta Faucet with Allen Wrench**TOVEN-RV**$17.78**4.8★**▲ 215%**](https://www.amazon.com/dp/B0FZQGZ5B1) [**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**$21.56**3.6★**▲ 137%**](https://www.amazon.com/dp/B0G4W73L7K) [**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**$24.11**4.2★**▲ 78%**](https://www.amazon.com/dp/B0FQC8TGMN) [**RP50587 Cartridge Valve Replacement for RP50587 Delta Cartridge Compatible with DST Single Handle Kitchen and Lavatory Faucets - Includes Allen Wrench for Easy Installation**NIDIOCIP**$19.21**4.6★**▲ 53%**](https://www.amazon.com/dp/B0DWMC6XSK) [**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**$19.55**4.2★**▲ 23%**](https://www.amazon.com/dp/B0FQC8RH75)
**~~View all trending →~~**
## **What buyers say about delta kitchen faucet cartridge**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Assembly/Installation**18%
*“installed it myself”*
**Size-Overall**15%
*“Fit perfect”*
**Leak-Proof**14%
*“No more annoying leaks or wasted water”*
**Advertised Vs Actual Product**7%
*“As described”*
**Value For Money**7%
*“affordable price”*
**Quality-Overall**6%
*“Good quality”*
**Ease Of Use**6%
*“Went in easy”*
**Efficiency**4%
*“Works great”*
**Maintenance And Repair**4%
*“Right component for a easy fix”*
**Durability**2%
*“feels very durable so far”*
### **What buyers complain about **
**Leak-Proof**28%
*“Leaked immediately”*
**Size-Overall**6%
*“the dimensions are actually too small”*
**Spray/Flow**5%
*“flow rate out of it is so low to be unusable”*
**Durability**5%
*“Can't vouch for durability since I just installed it”*
**Quality-Overall**5%
*“I'm less than impressed with the build quality”*
**Noise Level**3%
*“Now it sounds like a screeching door closer”*
**Functionality-Overall**3%
*“I gave it a day to see if it would improve but it did not”*
**Instructions/User Manual/Troubleshooting**2%
*“Limited instructions”*
**Assembly/Installation**2%
*“Not sure if the problem was the installation or the product”*
**Mechanism Issues**2%
*“set screw does not tighten at handle”*
### **Top return reasons **
**Size-Overall**39%
**Compatibility-Overall**13%
**Leak-Proof**13%
**Defective Material/Parts**12%
**Advertised Vs Actual Product**4%
**Functionality-Overall**4%
**Value For Money**2%
**Maintenance And Repair**2%
**Noise Level**2%
**Assembly/Installation**2%
## **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.
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