Is def pump profitable to sell on Amazon United States?

The niche generates $397K/yr across 40 tracked products. 7 of 14 products launched in the last 360 days are still selling. 90-day search growth is -5.8%. Flapen's verdict: Worth a look (54/100).

How competitive is the def pump niche?

27 brands and 59 sellers compete. The top 5 products take 43% of clicks and top 5 brands hold 56% of demand.

What do buyers complain about in def pump?

Top complaints mined from reviews: Durability, Functionality-Overall, Quality-Overall. The return rate is 2.9%.

When does demand for def pump peak?

Demand is steady year-round — the busiest month runs 1.4× the quietest.

What does it cost to enter the def pump niche?

Listings span $30.53–$1401.02; the average listing price is $240.31 (sweet spot $15–$100). The average incumbent carries 23 reviews — the moat a new listing must climb.

def pump

Worth a look

Shows a thin review moat (23 avg reviews), but prices mostly outside the sweet spot ($30.53–$1401.02) keeps it on the watch list.

Review moat

Incredible23.3

avg incumbent reviews — the moat a new listing must climb

Brand share

Great56%

top-5 brand share — no brand owns this niche

Competition

Good43%

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

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Market size

Good$397K

$397K/yr · 41K searches

Returns

Good2.9%

return rate — above 5% kills the launch gate

Conversion

Good4.0%

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

Avg price

Okay$240.31

avg listing price — sweet spot $15–$100

Growth

Bad-5.8%

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

Price range

Bad$30.53–$1401.02

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

Signals Low Review Barrier High Price

According to Flapen's Amazon United States niche tracking, def pump is a $397K/yr Amazon United States market (41K searches/yr). The top 5 brands hold 56% of demand. Verdict: Worth a look — 54/100.

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

def pump market data

Units sold / yr: 2K–2K; avg 0–100/product
Revenue / yr: $360K–$481K; units × avg price
Conversion rate: 4.0%
Avg BSR: #222
Page quality: 0%
Prime: 93%
Sponsored: 95%
Out of stock: 4.6%
Avg brand age: 37 months
Avg seller age: 183 days

Competition & brand share

The top 5 products take 43% of clicks — established leaders, but buyers still shop beyond them.

Brands

27 rising

Sellers

Top-5 brand share

56%

Top 20: 94%

Top-5 click share

43%

Top 20: 79%

Open market

41%

YGHGAUH31%
Pumpoasis9%
Fill-Rite7%
TERA PUMP5%
Lonsge4%
Orvexa4%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -5.8% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.4×

Open Trend

Top def pump search terms

def pump23K/yr +0.6%3.5% conv.
def pump 55 gallon drum6K/yr -4.2%8.1% conv.
def transfer pump5K/yr -22.1%1.7% conv.
def pump for tote3K/yr +9.1%4.3% conv.
def fluid pump3K/yr -33.0%4.4% conv.

All search terms

Top def pump 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 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Electric Drum Barrel Pump with 120V AC/12V DC Power 55 Gallon Drum Pump with Built-in 2-Inch Bung Adapter 5 Gallons Per Minute Flow Rate for DEF Diesel Water Antifreeze

YGHGAUH$210.774.1★28 rev

AC 110V-120V Diesel Exhaust Fluid Transfer Pump Self-Priming Electric Diaphragm DEF Pump for Urea Oil Water & Irrigation.Diaphragm Pumps with 400W 10.6 GPM 36ft LiftWhite

YGHGAUH$147.174.3★10 rev

AC 110V-120V DEF Transfer Pump Kit. 400W 10.6 GPM (40 LPM) 23 PSI DEF Pump Kit Compatible with U.S. Plug. Includes Urea Gun K24 Flowmeter & AccessoriesWhite

YGHGAUH$371.955.0★5 rev

Fill-Rite FRHP32V Hand Operated Diesel Exhaust Fluid (DEF) Transfer Pump

Fill-Rite$116.134.3★55 rev

TERA PUMP Electric Powered 55 Gallon Drum Barrel Pump 2.4GPM

TERA PUMP$194.643.8★28 rev

Newest

by launch date

Orvexa AC 110V-120V DEF Transfer Pump Kit with US Plug High-Flow Self-Priming DEF Pump for Diesel Exhaust Fluid Transfer Compatible with Drums Totes and Wall Mounting Includes Premium Accessories

Orvexa$339.941 rev

5mo ago

110-120V DEF Transfer Pump Self-Priming Electric Diaphragm Drum Pump for Diesel Exhaust Fluid Urea Oil & Water 10.6 GPM High Flow 400W Motor 36 ft Lift US Plug

Orvexa$130.562 rev

6mo ago

KONA TOOLS DEF Narrow Outlet Battery-Powered Pump (3.2 GPM)

KONA TOOLS$36.0523 rev

6mo ago

PAMBER Electric Drum Pump with 120V AC/12V DC Power 33.5-49 Telescopic Suction Tube Drum Barrel Pump with Swivel Nut Nozzle 5 Gallons/mins Max Flow Rate for DEF Diesel Water etc.

PAMBER$193.7514 rev

9mo ago

Electric Drum Pump with120V AC/12V DC Power 55 Gallon Drum Pump Electric Built-in 2-Inch Bung Adapter 5 GPM Flow Rate Telescoping Suction Tube 34 to 49 Suitable for Diesel DEF Water Antifreeze

YSVORTOT$186.146 rev

9mo ago

What buyers say about def pump

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

What buyers love

Quality-Overall11%

“the hose feels like good quality”

Efficiency11%

“This fuel pump works great”

Ease Of Use10%

“Make life easy”

Value For Money7%

“Good price”

Advertised Vs Actual Product6%

“Works as should”

Assembly/Installation6%

“Easy assembly”

Size-Overall5%

“Direct fit”

Durability4%

“Durable and works well”

Pressure4%

“A pump makes it a lot easier”

Battery Life3%

“battery pack as the power method”

What buyers complain about

Durability19%

“Broke quickly”

Functionality-Overall10%

“it wont pump at all”

Quality-Overall8%

“Only downside is it feels a little cheap”

Size-Overall6%

“Larger orings”

Leak-Proof5%

“May leak due to smaller line connection than original”

Value For Money4%

“The price is a bit high, at $165,”

Strength3%

“Brittle plastic, breaks easily”

Spray/Flow3%

“nozzle stopped working”

Noise Level3%

“Went through the hassle of changing the pump and it lasted maybe 5 minutes, starting making wacky noises, then quit”

Smell3%

“It smells like carpet cleaner”

Top return reasons

Functionality-Overall16%

Defective Material/Parts16%

Size-Overall13%

Advertised Vs Actual Product7%

Quality-Overall4%

Durability4%

Compatibility-Overall4%

Leak-Proof3%

Assembly/Installation3%

Value For Money3%

Common questions

Is def pump profitable to sell on Amazon United States?: The niche generates $397K/yr across 40 tracked products. 7 of 14 products launched in the last 360 days are still selling. 90-day search growth is -5.8%. Flapen's verdict: Worth a look (54/100).
How competitive is the def pump niche?: 27 brands and 59 sellers compete. The top 5 products take 43% of clicks and top 5 brands hold 56% of demand.
What do buyers complain about in def pump?: Top complaints mined from reviews: Durability, Functionality-Overall, Quality-Overall. The return rate is 2.9%.
When does demand for def pump peak?: Demand is steady year-round — the busiest month runs 1.4× the quietest.
What does it cost to enter the def pump niche?: Listings span $30.53–$1401.02; the average listing price is $240.31 (sweet spot $15–$100). The average incumbent carries 23 reviews — the moat a new listing must climb.