Is coolant temperature sensor profitable to sell on Amazon United States?

The niche generates $361K/yr across 41 tracked products. 4 of 6 products launched in the last 360 days are still selling. 90-day search growth is -8.3%. Flapen's verdict: Worth a look (55/100).

How competitive is the coolant temperature sensor niche?

25 brands and 109 sellers compete. The top 5 products take 39% of clicks and top 5 brands hold 57% of demand.

What do buyers complain about in coolant temperature sensor?

Top complaints mined from reviews: Durability, Sensor, Compatibility-Overall. The return rate is 5.1% — above our launch gate.

When does demand for coolant temperature sensor peak?

Demand is steady year-round — the busiest month runs 1.3× the quietest.

What does it cost to enter the coolant temperature sensor niche?

Listings span $5.70–$36.06; the average listing price is $14.19 (sweet spot $15–$100). The average incumbent carries 527 reviews — the moat a new listing must climb.

coolant temperature sensor

Worth a look

Shows no brand lock-in (top 5 brands take 57% of clicks), but soft demand (-8.3% this quarter) keeps it on the watch list.

Brand share

Great57%

top-5 brand share — no brand owns this niche

Competition

Great39%

top-5 click share — an open shelf

Review moat

Good526.83

avg incumbent reviews — the moat a new listing must climb

Price range

Good$5.70–$36.06

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

Avg price

Good$14.19

avg listing price — sweet spot $15–$100

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Market size

Good$361K

$361K/yr · 660K searches

Conversion

Okay3.9%

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

Returns

Bad5.1%

return rate — above 5% kills the launch gate

Growth

Bad-8.3%

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

Signals High Returns

According to Flapen's Amazon United States niche tracking, coolant temperature sensor is a $361K/yr Amazon United States market (660K searches/yr). The top 5 brands hold 57% of demand. Verdict: Worth a look — 55/100.

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

coolant temperature sensor market data

Units sold / yr: 25K–30K; avg 500–750/product
Revenue / yr: $355K–$426K; units × avg price
Conversion rate: 3.9%
Avg BSR: #558
Page quality: 0%
Prime: 100%
Sponsored: 71%
Out of stock: 2.2%
Avg brand age: 44 months
Avg seller age: 147 days

Competition & brand share

Clicks spread well past the top 5 (39% combined) — an open shelf where new products get seen.

Brands

25 falling

Sellers

109

Top-5 brand share

57%

Top 20: 95%

Top-5 click share

39%

Top 20: 75%

Open market

39%

ACDelco22%
GM GENUINE PARTS12%
A-Premium11%
Beck/Arnley7%
GKmow5%
Manymiba5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -8.3% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.3×

Open Trend

Top coolant temperature sensor search terms

coolant temperature sensor232K/yr -12.2%2.6% conv.
engine coolant temperature sensor75K/yr +1.0%2.5% conv.
coolant temp sensor54K/yr -16.1%3.0% conv.
ect sensor42K/yr -0.2%2.6% conv.
sensor de temperatura35K/yr -21.1%0.5% conv.
temp sensor35K/yr -16.7%0.4% conv.
temperature sensor for car28K/yr -0.8%2.3% conv.
coolant sensor26K/yr -3.6%2.1% conv.
automotive replacement coolant temperature sensors20K/yr +12.3%1.6% conv.
sensor de temperatura del refrigerante21K/yr +4.8%1.1% conv.

All search terms

Top coolant temperature sensor 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

ACDelco Gold 213-4514 (19236568) Engine Coolant Temperature Sensor

ACDelco$18.714.6★5,257 rev

A-Premium Engine Coolant Temperature Sensor Compatible with Dodge Grand Caravan 08-19 Ram 1500 2500 3500 Challenger Durango Journey Jeep

A-Premium$9.104.6★409 rev

GM Genuine Parts 213-4333 (12608814) Engine Coolant Temperature Sensor

GM GENUINE PARTS$24.884.6★894 rev

GKmow 1 PC Engine Temperature Sensor ECT Temp Sensor Replace 15404280 12191170 60811520 12608814 Car Parts Compatible with Delphi (Gold)

GKmow$8.653.8★151 rev

NewYall Engine Coolant Cooling Temperature Temp Sensor Sender for Chevy GMC Cadillac Buick Oldsmobile Pontiac

NewYall$8.954.4★777 rev

Newest

by launch date

KPFILEH Engine Coolant Temperature Sensor OEM#19236568 15326388 Automotive Engine Water Coolant Temperature Sensor Replacement Accessories Fit for Most Cars SUVs Trucks (Gold)

KPFILEH$5.705 rev

8mo ago

Sandfren Car Engine Coolant Temperature Sensor Vehicles Cooling Water Temp Sensor with Connector Pigtail Harness Automotive OEM# 19236568 Replacement Compatible with Avalanche Cobalt Aveo

Sandfren$9.0030 rev

8mo ago

Engine Coolant Temperature Sensor for 1999-2014 Chevrolet Silverado 1999-2014 GMC Sierra 2000-2015 Chevrolet Tahoe 2000-2016 GMC Yukon 2000-2014 Chevrolet Suburban 2134514 19236568

Manymiba$9.6015 rev

10mo ago

Rebvugr Engine Coolant Temperature Sensor Temperature Sending Unit Water Temp Sender Sending Unit Sensor Car Accessories Compatible with Dodge Jeep Chrysler Replace OEM#56027873 2132811 SU3035

Rebvugr$6.5431 rev

11mo ago

Engine Coolant Temperature Sensor ECT Temp Sensor Replace D583 19022018 Compatible with 4Runner Avalon Camry Corolla Highlander Prius Sequoia Sienna Solara Tacoma Tundra

WEITARI$14.0077 rev

1y ago

What buyers say about coolant temperature sensor

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

What buyers love

Size-Overall27%

“Easy fit”

Quality-Overall13%

“Fair quality for a fair price”

Value For Money12%

“Good Value”

Efficiency10%

“Working good”

Assembly/Installation8%

“This was a nice clean install”

Advertised Vs Actual Product6%

“Did the job”

Coolant4%

“the cooling system seems happier overall”

Ease Of Use4%

“Easy peasy”

Durability2%

“still holding up”

Filtration2%

“keeps the air quality good”

What buyers complain about

Durability17%

“Easily breaks”

Sensor13%

“They say you have to replace both sensor”

Compatibility-Overall13%

“It is not compatible with my jeep liberty”

Size-Overall11%

“discovered it wasnt the correct size. way too small”

Quality-Overall8%

“Bad quality control”

Functionality-Overall5%

“Didnt work”

Defective Material/Parts2%

“Part failed after a week”

Heating2%

“the clip is brittle from the heat its been exposed to”

Socket/Port/Plug2%

“Plug connection is different”

Advertised Vs Actual Product2%

“this did not fit my car as it advertised very disappointed”

Top return reasons

Sensor23%

Size-Overall19%

Coolant14%

Compatibility-Overall14%

Defective Material/Parts7%

Advertised Vs Actual Product4%

Functionality-Overall4%

Value For Money3%

Measurement/Reading Accuracy2%