---
title: "Delta Diverter Cartridge — $20K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/delta-diverter-cartridge"
last_updated: "2026-08-08T22:56:43.300Z"
locale: en
meta:
description: "Niche score 34/100 · $20K/yr market · 10K searches/yr · $41.24 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 34/100 · $20K/yr market · 10K searches/yr · $41.24 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Delta Diverter Cartridge — $20K/yr Amazon US Niche (2026) - Flapen"
---
# **delta diverter cartridge**
**Skip it**
A small market ($20K/yr) — this niche doesn't clear our bar today.
Market size 5Growth 16Conversion 59Competition 16Returns 10Price range 75Avg price 95Brand share 28Review moat 95Quality gap 52
**Review moat**
**Incredible****94**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Incredible****$41.24**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$13.71–$127.45**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Good****5.0%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Okay****88%**
top-5 brand share — brands hold most of the demand
**Growth**
**Bad****-18.2%**
90-day search growth — must beat 0% to launch
**Competition**
**Bad****81%**
top-5 click share — a locked-up shelf
**Returns**
**Bad****9.2%**
return rate — above 5% kills the launch gate
**Market size**
**Bad****$20K**
$20K/yr · 10K searches
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500") [** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%")
According to Flapen's Amazon United States niche tracking, delta diverter cartridge is a $20K/yr Amazon United States market (10K searches/yr). The top 5 brands hold 88% of demand. Verdict: Skip it — 34/100.
Data updated Jul 29, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **delta diverter cartridge market data**
- **Units sold / yr**
- **1K–1K**
- avg 100–250/product
- **Revenue / yr**
- **$41K–$52K**
- units × avg price
- **Conversion rate**
- **5.0%**
- **Avg BSR**
- **#343**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **75%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **29 months**
- **Avg seller age**
- **163 days**
## **Competition & brand share**
The top 5 products capture 81% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**10 **▲rising
**Sellers**
**26**
**Top-5 brand share**
**88%**
Top 20: 100%
**Top-5 click share**
**81%**
Top 20: 100%
**Open market**
**9%**
- NBPLUS35% - DELTA31% - XLhippo9% - DEHEHUIY7% - Fit4drive6% - Edifla3% - Open — no brand owns it (4 brands, 9%)
## **Demand**
Weekly Amazon search volume, last 8 weeks — -18.2% search growth over the last 90 days.
200150Prime Day '26Jun '26Jun '26Jun '26Jun '26Jul '26Jul '26Jul '26Jul '26
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/delta-diverter-cartridge/trend)
## **Top delta diverter cartridge search terms**
- **delta diverter cartridge**5K/yr-13.4%2.7% conv. - **rp51919**3K/yr-12.4%16.1% conv. - **delta 6 way diverter cartridge**2K/yr-33.9%11.1% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/delta-diverter-cartridge/search-terms)
## **Top delta diverter 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%$2K20%$4K30%$6K40%$8K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted
All 12 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**NBPLUS RP51919 6 Setting Diverter Cartridge Compatible with Delta R11000 R22000 Faucet Valve Replacement Trim Kit 6 Way Shower Diverter Parts No Leakage Brass**NBPLUS**$26.37**4.7★83 rev](https://www.amazon.com/dp/B0D62X4ZF2) [2**Delta Faucet RP51919 Replacement Part**DELTA**$127.45**4.5★411 rev](https://www.amazon.com/dp/B0052X8IX6) [3**Original RP51919 Replacement Part for Delta Faucet RP51919 6 Setting Diverter Cartridge for Valve Bodies R11000 and R22000 Also Replaces RP51918 3 Setting Diverter Cartridge.(1 Pack)**XLhippo**$49.16**4.6★18 rev](https://www.amazon.com/dp/B0DK97QXSZ) [4**6 Setting Way Diverter Cartridge Precision-Compatible With Delta RP51919 for Delta R22000 R11000 Shower Diverter Seal Prevent Leaks Rust-Resistant Brass construction 6 Function Diverter Valve Trim Kit**DEHEHUIY**$25.15**4.7★52 rev](https://www.amazon.com/dp/B0CM2ZV6SZ) [5**RP51919 6 Setting Diverter Cartridge for Delta Faucet Brass No Leakage**Fit4drive**$22.60**4.6★12 rev](https://www.amazon.com/dp/B0D83QHK9F)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**RP51919 6 Setting Diverter Cartridge Compatible with Delta R11000 R22000 Diverter Valve 6 Way Diverter Cartridge Replacement Trim Repair Kit 3 Individual Positions 3 Shared Positions Brass**Edifla**$22.98**2 rev3mo ago](https://www.amazon.com/dp/B0GX9WVZLK) [**ZVJV RP51919 6 Setting Diverter Cartridge Replacement Part for Delta Faucet Valve Bodies R11000 R22000 6 Way Shower Diverter Valve Parts No Leakage Brass Construction**ZVJV**$27.85**3 rev11mo ago](https://www.amazon.com/dp/B0FKT6PGQK) [**Original RP51919 Replacement Part for Delta Faucet RP51919 6 Setting Diverter Cartridge for Valve Bodies R11000 and R22000 Also Replaces RP51918 3 Setting Diverter Cartridge.(1 Pack)**XLhippo**$49.16**18 rev1y ago](https://www.amazon.com/dp/B0DK97QXSZ) [**RP51919 6-Setting Shower Diverter Cartridge for Delta Faucet Valve body R11000 and integrated valve body R22000 Delta OEM Faucet Valve Replacement Trim Kit 6 Way Shower Diverter Parts (1 Pack)**ousun**$32.95**19 rev2y ago](https://www.amazon.com/dp/B0D97PKHFL) [**RP51919 6 Setting Diverter Cartridge for Delta Faucet Brass No Leakage**Fit4drive**$22.60**12 rev2y ago](https://www.amazon.com/dp/B0D83QHK9F)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**RP51919 6 Setting Diverter Cartridge Compatible with Delta R11000 R22000 Diverter Valve 6 Way Diverter Cartridge Replacement Trim Repair Kit 3 Individual Positions 3 Shared Positions Brass**Edifla**$22.98**3.0★**▲ 369%**](https://www.amazon.com/dp/B0GX9WVZLK) [**RP51919 6-Setting Diverter Cartridge Replacement Kit - Compatible with Delta R11000 R22000 Valve Solid Brass 6-Way Shower Diverter Parts**XAMGUS**$26.68**0.0★**▲ 366%**](https://www.amazon.com/dp/B0H2TWDJHK) [**ZVJV RP51919 6 Setting Diverter Cartridge Replacement Part for Delta Faucet Valve Bodies R11000 R22000 6 Way Shower Diverter Valve Parts No Leakage Brass Construction**ZVJV**$27.85**5.0★**▲ 98%**](https://www.amazon.com/dp/B0FKT6PGQK) [**RP51919 6-Setting Shower Diverter Cartridge for Delta Faucet Valve body R11000 and integrated valve body R22000 Delta OEM Faucet Valve Replacement Trim Kit 6 Way Shower Diverter Parts (1 Pack)**ousun**$32.95**4.5★**▲ 49%**](https://www.amazon.com/dp/B0D97PKHFL) [**NBPLUS RP51919 6 Setting Diverter Cartridge Compatible with Delta R11000 R22000 Faucet Valve Replacement Trim Kit 6 Way Shower Diverter Parts No Leakage Brass**NBPLUS**$26.37**4.7★**▲ 14%**](https://www.amazon.com/dp/B0D62X4ZF2)
**~~View all trending →~~**
## **What buyers say about delta diverter cartridge**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**44%
*“Excellent product”*
**Advertised Vs Actual Product**18%
*“works as expected”*
**Size-Overall**14%
*“it was great fit”*
**Value For Money**12%
*“Excellent value for money”*
**Efficiency**9%
*“Worked out smooth”*
**Assembly/Installation**3%
*“Easy to install and reasonably priced”*
### **What buyers complain about **
**Design-Overall**67%
*“This is a MAJOR DESIGN FLAW for Delta”*
**Advertised Vs Actual Product**17%
*“Not as described”*
**Compatibility-Overall**17%
*“Not compatible”*
### **Top return reasons **
**Size-Overall**25%
**Functionality-Overall**21%
**Advertised Vs Actual Product**15%
**Defective Material/Parts**14%
**Compatibility-Overall**12%
**Assembly/Installation**4%
**Value For Money**3%
**Product Condition**3%
**Quality-Overall**1%
**Leak-Proof**1%
## **Common questions**
- **Is delta diverter cartridge profitable to sell on Amazon United States?**
- The niche generates $20K/yr across 12 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -18.2%. Flapen's verdict: Skip it (34/100).
- **How competitive is the delta diverter cartridge niche?**
- 10 brands and 26 sellers compete. The top 5 products take 81% of clicks and top 5 brands hold 88% of demand.
- **What do buyers complain about in delta diverter cartridge?**
- Top complaints mined from reviews: Design-Overall, Advertised Vs Actual Product, Compatibility-Overall. The return rate is 9.2% — above our launch gate.
- **What does it cost to enter the delta diverter cartridge niche?**
- Listings span $13.71–$127.45; the average listing price is $41.24 (sweet spot $15–$100). The average incumbent carries 94 reviews — the moat a new listing must climb.
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