Is polaris 3900 parts profitable to sell on Amazon United States?

The niche generates $494K/yr across 13 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is +56.1%. Flapen's verdict: Worth a look (55/100).

How competitive is the polaris 3900 parts niche?

8 brands and 34 sellers compete. The top 5 products take 82% of clicks and top 5 brands hold 91% of demand.

What do buyers complain about in polaris 3900 parts?

Top complaints mined from reviews: Durability, Quality-Overall, Value For Money. The return rate is 0.7%.

When does demand for polaris 3900 parts peak?

Demand peaks in May–Jun–Jul–Aug; the busiest month runs 4.8× the quietest.

What does it cost to enter the polaris 3900 parts niche?

Listings span $15.15–$937.12; the average listing price is $268.88 (sweet spot $15–$100). The average incumbent carries 831 reviews — the moat a new listing must climb.

polaris 3900 parts

Worth a look

Shows low returns (0.7%), but prices mostly outside the sweet spot ($15.15–$937.12) keeps it on the watch list.

Returns

Incredible0.7%

return rate — above 5% kills the launch gate

Conversion

Great10.0%

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

Growth

Good+56.1%

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

Review moat

Good831.38

avg incumbent reviews — the moat a new listing must climb

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Market size

Good$494K

$494K/yr · 18K searches

Avg price

Okay$268.88

avg listing price — sweet spot $15–$100

Brand share

Bad91%

top-5 brand share — brand-locked demand

Competition

Bad82%

top-5 click share — a locked-up shelf

Price range

Bad$15.15–$937.12

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

Signals High Price

According to Flapen's Amazon United States niche tracking, polaris 3900 parts is a $494K/yr Amazon United States market (18K searches/yr). The top 5 brands hold 91% of demand. Demand peaks in May–Jun–Jul–Aug. Verdict: Worth a look — 55/100.

Data updated Jul 24, 2026 · scored weekly · How we score niches

polaris 3900 parts market data

Units sold / yr: 1K–2K; avg 100–250/product
Revenue / yr: $336K–$403K; units × avg price
Conversion rate: 10.0%
Avg BSR: #380
Page quality: 0%
Prime: 92%
Sponsored: 92%
Out of stock: 0.0%
Avg brand age: 39 months
Avg seller age: 191 days

Competition & brand share

The top 5 products capture 82% of clicks — a locked-up shelf that new listings rarely crack.

Brands

8 flat

Sellers

Top-5 brand share

91%

Top 20: 100%

Top-5 click share

82%

Top 20: 100%

Open market

Polaris46%
E-cowlboy25%
Zodiac8%
Hihitomorrow7%
ATIE5%
Bzcovac3%
Open — no brand owns it (2 brands, 6%)

Demand & seasonality

Weekly Amazon search volume, last 60 weeks — +56.1% search growth over the last 90 days.

Peak months: May, Jun, Jul, Aug · busiest ÷ quietest = 4.8×

Open Trend

Top polaris 3900 parts search terms

polaris 3900 parts5K/yr +35.8%5.2% conv.
polaris 39005K/yr +38.2%4.1% conv.
polaris 3900 rebuild kit4K/yr +71.7%8.0% conv.
polaris 3900 sport4K/yr +101.7%4.0% conv.

All search terms

Top polaris 3900 parts 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 13 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Polaris Vac-Sweep 3900 Sport Pressure Side Pool Cleaner

Polaris$914.584.0★534 rev

Replacement for Zodiac Polaris R0543200 3900 Sport Robotic Swimming Pool Cleaner Rebuild Kit Tune-Up Kit Accessory Also for P39 Sport Pressure Inground Pool Cleaner Upgraded Silver

E-cowlboy$181.384.0★47 rev

Zodiac Polaris 3900 Factory Rebuild Kit R0543200

Zodiac$218.804.6★676 rev

Polaris Vac-Sweep P39 Pressure Inground Pool Cleaner Triple Jet Powered with a Dual Chamber SuperBag for Debris

Polaris$937.123.6★72 rev

R0543200 Tune-Up Kit + (3 Pack) 48-232 Wide Trax Tires for Polaris 3900 Sport P39 & 480 - Complete Pool Cleaner Refurbishment Set with Gearbox Chain System & High-Traction Replacement Wheels

Bzcovac$194.073.5★2 rev

Newest

by launch date

R0543200 Tune-Up Kit + (3 Pack) 48-232 Wide Trax Tires for Polaris 3900 Sport P39 & 480 - Complete Pool Cleaner Refurbishment Set with Gearbox Chain System & High-Traction Replacement Wheels

Bzcovac$194.072 rev

4mo ago

Gearbox with Tires Replacement Kit Fit for Robotic Swimming Pool Cleaner Vacumm

Hihitomorrow$193.251 rev

4mo ago

R0543200 Tune Up Rebuild Repair Kit Gearbox Assembly Replacement Parts Fit for Polaris 3900 P39 Sport Robotic Swimming Pool Cleaner Vacumm

Hihitomorrow$178.501 rev

1y ago

39-300 WMS Water Management Assembly with O-Ring Replacement Parts Rebuild Kit Fit for Zodiac Polaris 3900 P39 Sport Robotic Swimming Pool Cleaner Vacumm

Hihitomorrow$30.704 rev

1y ago

Replacement for Zodiac Polaris R0543200 3900 Sport Robotic Swimming Pool Cleaner Rebuild Kit Tune-Up Kit Accessory Also for P39 Sport Pressure Inground Pool Cleaner Upgraded Silver

E-cowlboy$181.3847 rev

2y ago

What buyers say about polaris 3900 parts

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

What buyers love

Quality-Overall17%

“No complaints”

Value For Money16%

“Affordable”

Assembly/Installation15%

“installed product, works fine”

Advertised Vs Actual Product12%

“Exactly what I needed”

Ease Of Cleaning11%

“Clean pool”

Ease Of Use5%

“Its simple to use”

Size-Overall4%

“Fit perfect”

Durability3%

“Reliability”

Instructions/User Manual/Troubleshooting2%

“The instructions were so thorough which is exactly what I need with these types of things”

Socket/Port/Plug1%

“Powerful plug and play”

What buyers complain about

Durability21%

“Broke”

Quality-Overall13%

“Useless and poor quality control”

Value For Money6%

“Replacement collection bags are outrageous in cost”

Maintenance And Repair5%

“the first lasted at leased 15 years with some repairs along the way”

Instructions/User Manual/Troubleshooting5%

“The instructions to get it to work well are non existent”

Strength4%

“wheel attachment is extremely fragile”

Functionality-Overall4%

“Not effective”

Ease Of Cleaning3%

“hard to remove from cleaner and zipper failure”

Material Quality3%

“cheap plastic molded parts”

Defective Material/Parts3%

“Defective device, no customer support”

Top return reasons

Defective Material/Parts33%

Functionality-Overall12%

Size-Overall11%

Product Condition7%

Value For Money6%

Connectivity-Overall4%

Add-Ons/Attachments4%