Is rv fresh water tank fill hose adapter profitable to sell on Amazon United States?

The niche generates $40K/yr across 18 tracked products. 2 of 4 products launched in the last 360 days are still selling. 90-day search growth is +141.6%. Flapen's verdict: Worth a look (61/100).

How competitive is the rv fresh water tank fill hose adapter niche?

15 brands and 60 sellers compete. The top 5 products take 63% of clicks and top 5 brands hold 71% of demand.

What do buyers complain about in rv fresh water tank fill hose adapter?

Top complaints mined from reviews: Leak-Proof, Value For Money, Assembly/Installation. The return rate is 1.1%.

What does it cost to enter the rv fresh water tank fill hose adapter niche?

Listings span $7.69–$40.83; the average listing price is $17.20 (sweet spot $15–$100). The average incumbent carries 644 reviews — the moat a new listing must climb.

rv fresh water tank fill hose adapter

Worth a look

Shows demand growing +141.6% this quarter, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Growth

Incredible+141.6%

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

Returns

Great1.1%

return rate — above 5% kills the launch gate

Avg price

Great$17.20

avg listing price — sweet spot $15–$100

Price range

Great$7.69–$40.83

cheapest to priciest tracked listing — scored on the share inside $15–$100

Conversion

Good6.9%

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

Review moat

Good644.11

avg incumbent reviews — the moat a new listing must climb

Brand share

Good71%

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

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Competition

Okay63%

top-5 click share — leaders hold, buyers still browse

Market size

Bad$40K

$40K/yr · 34K searches

Signals Trending

According to Flapen's Amazon United States niche tracking, rv fresh water tank fill hose adapter is a $40K/yr Amazon United States market (34K searches/yr). The top 5 brands hold 71% of demand. Verdict: Worth a look — 61/100.

Data updated Jul 11, 2026 · scored weekly · How we score niches

rv fresh water tank fill hose adapter market data

Units sold / yr: 3K–3K; avg 100–250/product
Revenue / yr: $43K–$52K; units × avg price
Conversion rate: 6.9%
Avg BSR: #152
Page quality: 0%
Prime: 83%
Sponsored: 72%
Out of stock: 1.3%
Avg brand age: 40 months
Avg seller age: 175 days

Competition & brand share

The top 5 products take 63% of clicks — established leaders, but buyers still shop beyond them.

Brands

15 rising

Sellers

Top-5 brand share

71%

Top 20: 100%

Top-5 click share

63%

Top 20: 100%

Open market

25%

Camco38%
Aussio10%
RecPro9%
Retisee8%
A.A6%
Automotive Authority LLC4%

Top rv fresh water tank fill hose adapter search terms

rv fresh water fill adapter9K/yr +268.3%7.1% conv.
rv water tank fill hose6K/yr +108.8%6.7% conv.
rv water fill adapter4K/yr +219.3%7.9% conv.
rv water tank filler5K/yr +70.0%9.8% conv.
rv water fill hose4K/yr +83.7%8.4% conv.
rv fresh water tank fill hose adapter6K/yr +52.6%9.6% conv.

All search terms

Top rv fresh water tank fill hose adapter 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★)

All 18 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Camco RV Water Tank Filler with Shutoff Valve - Quickly and Efficiently Helps Fill Your Water Tank and Eliminate Line Backflow - Features a 5/8 Tube (40003)

Camco$7.944.7★7,960 rev

Aussio 40003 RV Water Fill Adapter with Hose for Quick Filling of Your RVs Gravity Water Fill Adapter Fits Standard Drinking Waters Hoses - Features a 5/8 Tube

Aussio$9.144.4★152 rev

Retisee RV Water Fill Adapter Fresh Water Tank Hose Adapter for Travel Trailer & Camper Hands-Free No Splash Inlet Fitting Leak-Proof No-Tool Installation (2 Pack)

Retisee$18.873.5★9 rev

Camco 40004 RV Gravity Water Fill Adapter with Shut Off Valve and Clip - Allows for Quick Filling of Your RVs Gravity Water Fill - Adapter Fits Standard Drinking Water Hoses

Camco$9.484.5★1,155 rev

A.A 1-3/8 Fill Hose with Flats for RV Concession Fresh Water Tank - Marine Boats Campers Trailer RVs Concession (5 Feet)

A.A$22.334.6★811 rev

Newest

by launch date

1.25 Fresh Water Tank Hose Connection Kit for RV Camper Water Hose Kit for Travel Trailer Concession Vehicle All Purpose Fresh Water Tank Hose Connection Accessory Kit for RV Trailer Camper

SMZTools$40.839 rev

3mo ago

Retisee RV Water Fill Adapter Fresh Water Tank Hose Adapter for Travel Trailer & Camper Hands-Free No Splash Inlet Fitting Leak-Proof No-Tool Installation (2 Pack)

Retisee$18.879 rev

5mo ago

G-Sunny Stainless Steel RV Water Tank Filler with Shutoff Valve - Quickly and Efficiently Fills Fresh Water Tanks 3/4 Valve Sturdy for Camper Trailer RV Accessories (Water Fill Adapter)

G-Sunny$22.6613 rev

5mo ago

RV Water Inlet Funnel 3.54-in Wide Mouth Gravity Fresh Water Tank Fill Funnel for Water Inlet Hatch Travel Trailer Essentials Accessories Supplies Screw-On Hands-Free Design

MITCHENIFY$19.7546 rev

9mo ago

Lybula RV Brass Water Tank Filler with 3/4 Inch Shut Off Valve & 7.8 Flexible Fill Tube - Durable & Easy Camper Fresh Water Fill Adapter

Lybula$12.679 rev

1y ago

What buyers say about rv fresh water tank fill hose adapter

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

What buyers love

Quality-Overall13%

“it's quality that should last for several years”

Size-Overall12%

“Everything fit properly”

Ease Of Use10%

“Ease of operation”

Advertised Vs Actual Product8%

“also as advertised”

Value For Money8%

“Worth the money”

Pressure5%

“I love the shut off valve in the Camco filler because it allows me to top off the tank without making a mess around the side of the RV”

Assembly/Installation5%

“Easy to install”

Efficiency5%

“Works perfectly”

Spray/Flow4%

“the flow is steady”

Design-Overall4%

“This kit is well thought out”

What buyers complain about

Leak-Proof24%

“are prone to leaking”

Value For Money10%

“Way over priced”

Assembly/Installation5%

“found none in the threads or the valve assembly”

Durability5%

“Careful though, its plastic and can easily break”

Print Quality5%

Strength4%

“Feels super flimsy”

Quality-Overall4%

“Cheaply made and LEAKS”

Pressure4%

“After installed first time turning on rv pump the one way valve blew out spraying water out this city water inlet”

Ease Of Use3%

“Also, they do not thread onto the fresh water fill area, making them very difficult to use”

Design-Overall2%

“One piece design would be better”

Top return reasons

Size-Overall54%

Compatibility-Overall9%

Connectivity-Overall5%

Leak-Proof5%

Advertised Vs Actual Product5%

Functionality-Overall4%

Defective Material/Parts3%

Add-Ons/Attachments2%

Mechanism Issues2%

Quality-Overall2%

Common questions

Is rv fresh water tank fill hose adapter profitable to sell on Amazon United States?: The niche generates $40K/yr across 18 tracked products. 2 of 4 products launched in the last 360 days are still selling. 90-day search growth is +141.6%. Flapen's verdict: Worth a look (61/100).
How competitive is the rv fresh water tank fill hose adapter niche?: 15 brands and 60 sellers compete. The top 5 products take 63% of clicks and top 5 brands hold 71% of demand.
What do buyers complain about in rv fresh water tank fill hose adapter?: Top complaints mined from reviews: Leak-Proof, Value For Money, Assembly/Installation. The return rate is 1.1%.
What does it cost to enter the rv fresh water tank fill hose adapter niche?: Listings span $7.69–$40.83; the average listing price is $17.20 (sweet spot $15–$100). The average incumbent carries 644 reviews — the moat a new listing must climb.