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.

delta diverter cartridge

Skip it

A small market ($20K/yr) — this niche doesn't clear our bar today.

Review moat

Incredible94

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

Good5.0%

search→purchase rate — share of searches ending in a sale

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Brand share

Okay88%

top-5 brand share — brands hold most of the demand

Growth

Bad-18.2%

90-day search growth — must beat 0% to launch

Competition

Bad81%

top-5 click share — a locked-up shelf

Returns

Bad9.2%

return rate — above 5% kills the launch gate

Market size

Bad$20K

$20K/yr · 10K searches

Signals Low Review Barrier High Returns

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

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

Top-5 brand share

88%

Top 20: 100%

Top-5 click share

81%

Top 20: 100%

Open market

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.

Open Trend

Top delta diverter cartridge search terms

delta diverter cartridge5K/yr -13.4%2.7% conv.
rp519193K/yr -12.4%16.1% conv.
delta 6 way diverter cartridge2K/yr -33.9%11.1% conv.

All 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.

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

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$26.374.7★83 rev

Delta Faucet RP51919 Replacement Part

DELTA$127.454.5★411 rev

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$49.164.6★18 rev

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$25.154.7★52 rev

RP51919 6 Setting Diverter Cartridge for Delta Faucet Brass No Leakage

Fit4drive$22.604.6★12 rev

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$22.982 rev

3mo ago

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$27.853 rev

11mo ago

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$49.1618 rev

1y ago

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$32.9519 rev

2y ago

RP51919 6 Setting Diverter Cartridge for Delta Faucet Brass No Leakage

Fit4drive$22.6012 rev

2y ago

What buyers say about delta diverter cartridge

What buyers praise and complain about, mined from review topics.

What buyers love

Quality-Overall44%

“Excellent product”

Advertised Vs Actual Product18%

“works as expected”

Size-Overall14%

“it was great fit”

Value For Money12%

“Excellent value for money”

Efficiency9%

“Worked out smooth”

Assembly/Installation3%

“Easy to install and reasonably priced”

What buyers complain about

Design-Overall67%

“This is a MAJOR DESIGN FLAW for Delta”

Advertised Vs Actual Product17%

“Not as described”

Compatibility-Overall17%

“Not compatible”

Top return reasons

Size-Overall25%

Functionality-Overall21%

Advertised Vs Actual Product15%

Defective Material/Parts14%

Compatibility-Overall12%

Assembly/Installation4%

Value For Money3%

Product Condition3%

Quality-Overall1%

Leak-Proof1%

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.