---
title: "Coolant Funnel Kit — $754K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/coolant-funnel-kit"
last_updated: "2026-08-10T15:34:36.188Z"
locale: en
meta:
description: "Niche score 47/100 · $754K/yr market · 443K searches/yr · $19.56 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 47/100 · $754K/yr market · 443K searches/yr · $19.56 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Coolant Funnel Kit — $754K/yr Amazon US Niche (2026) - Flapen"
---
# **coolant funnel kit**
**Skip it**
A concentrated shelf (top 5 take 81% of clicks) — this niche doesn't clear our bar today.
Market size 71Growth 22Conversion 82Competition 16Returns 51Price range 95Avg price 86Brand share 28Review moat 30Quality gap 40
**Price range**
**Incredible****$17.06–$23.37**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Avg price**
**Great****$19.56**
avg listing price — sweet spot $15–$100
**Conversion**
**Great****8.7%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Good****$754K**
$754K/yr · 443K searches
**Returns**
**Good****2.9%**
return rate — above 5% kills the launch gate
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Okay****3,528.45**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Okay****88%**
top-5 brand share — brands hold most of the demand
**Growth**
**Bad****-5.4%**
90-day search growth — must beat 0% to launch
**Competition**
**Bad****81%**
top-5 click share — a locked-up shelf
According to Flapen's Amazon United States niche tracking, coolant funnel kit is a $754K/yr Amazon United States market (443K searches/yr). The top 5 brands hold 88% of demand. Demand peaks in Jan–May. Verdict: Skip it — 47/100.
Data updated Jul 12, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **coolant funnel kit market data**
- **Units sold / yr**
- **40K–50K**
- avg 4,000–5,000/product
- **Revenue / yr**
- **$782K–$978K**
- units × avg price
- **Conversion rate**
- **8.7%**
- **Avg BSR**
- **#50**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **41 months**
- **Avg seller age**
- **173 days**
## **Competition & brand share**
The top 5 products capture 81% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**9 **▲rising
**Sellers**
**18**
**Top-5 brand share**
**88%**
Top 20: 100%
**Top-5 click share**
**81%**
Top 20: 100%
**Open market**
**8%**
- EPAuto41% - SEDY17% - OEMTOOLS16% - ELEAD9% - Orion Motor Tech5% - SWANLAKE GARDEN TOOLS3% - Open — no brand owns it (3 brands, 8%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -5.4% search growth over the last 90 days.
15K10KHoliday '24Prime Day '25Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jan, May · busiest ÷ quietest = 1.7×
[**Open Trend **](https://flapen.com/research/us/automotive/coolant-funnel-kit/trend)
## **Top coolant funnel kit search terms**
- **coolant funnel kit**145K/yr-15.2%8.5% conv. - **coolant funnel**43K/yr+10.9%7.8% conv. - **coolant bleeder kit**34K/yr-10.2%5.8% conv. - **radiator funnel**26K/yr+6.3%8.6% conv. - **spill free funnel kit cooling system**20K/yr-15.0%11.9% conv. - **no spill coolant funnel kit**21K/yr-10.0%9.5% conv. - **radiator funnel burping kit**20K/yr-13.7%10.6% conv. - **no spill funnel**14K/yr-7.1%7.7% conv. - **radiator fill funnel kit**14K/yr-8.1%9.9% conv. - **spill free funnel**12K/yr+5.0%6.8% conv. [**All search terms **](https://flapen.com/research/us/automotive/coolant-funnel-kit/search-terms)
## **Top coolant funnel kit 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.
0%15%$113K30%$226K45%$339K60%$452K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 11 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**EPAuto Spill Proof Radiator Coolant Filling Funnel Kit**EPAuto**$21.82**4.7★20,365 rev](https://www.amazon.com/dp/B01I40ZQWE) [2**OEMTOOLS No-Spill Coolant Funnel Kit 15 Piece Fluid and Oil Funnel Set Allows Access To Hard-To-Reach Radiators**OEMTOOLS**$21.96**4.6★8,819 rev](https://www.amazon.com/dp/B01A2CQSU6) [3**Ultimate No Spill Coolant Funnel Kit - 19-Piece Spill-Free Radiator Funnel Set Spill Proof Radiator Bleeder Kit Coolant Filling Radiator Filler Extra Funnels and Adapters for Universal Vehicle**SEDY**$17.54**4.4★2,025 rev](https://www.amazon.com/dp/B089YHW5HR) [4**22-Piece No-Spill Coolant Filling Funnel Kit and Siphon Hose Pump Radiator Coolant Filling Spill-Proof Funnel Kit with Adapters Extensions PVC Hose Engine Oil Funnels Towel for Universal Vehicle**SEDY**$23.37**4.4★419 rev](https://www.amazon.com/dp/B0DX5WXRKS) [5**ELEAD No-Spill Coolant Funnel Kit - 19-Piece Radiator Funnel burping kit coolant Bleeder kit Extra Funnels and Adapters for Universal Vehicle**ELEAD**$17.06**4.5★1,006 rev](https://www.amazon.com/dp/B0BJDJG289)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**20-Piece No-Spill Coolant Funnel Kit Cooling System Funnels Kits Spill Proof Funnel Bleeder Radiator Funnels Kit with Adapters Extensions Flexible Hose Circular-Funnel Towel for Automotive Use**ELEAD**$20.74**52 rev5mo ago](https://www.amazon.com/dp/B0FW4V7FLR) [**Orion Motor Tech No Spill Coolant Funnel Kit 17 Piece Coolant Bleeder Kit**Orion Motor Tech**$17.34**171 rev7mo ago](https://www.amazon.com/dp/B0FLY184K2) [**22-Piece No-Spill Coolant Filling Funnel Kit and Siphon Hose Pump Radiator Coolant Filling Spill-Proof Funnel Kit with Adapters Extensions PVC Hose Engine Oil Funnels Towel for Universal Vehicle**SEDY**$23.37**419 rev1y ago](https://www.amazon.com/dp/B0DX5WXRKS) [**2026 Upgraded Coolant Bleeder Funnel Kit Radiator Burping Funnel**SMART JERRY**$20.78**502 rev1y ago](https://www.amazon.com/dp/B0DB8FBVMM) [**ELEAD No-Spill Coolant Funnel Kit - 19-Piece Radiator Funnel burping kit coolant Bleeder kit Extra Funnels and Adapters for Universal Vehicle**ELEAD**$17.06**1,006 rev3y ago](https://www.amazon.com/dp/B0BJDJG289)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**20-Piece No-Spill Coolant Funnel Kit Cooling System Funnels Kits Spill Proof Funnel Bleeder Radiator Funnels Kit with Adapters Extensions Flexible Hose Circular-Funnel Towel for Automotive Use**ELEAD**$20.74**4.4★**▲ 157%**](https://www.amazon.com/dp/B0FW4V7FLR) [**Orion Motor Tech No Spill Coolant Funnel Kit 17 Piece Coolant Bleeder Kit**Orion Motor Tech**$17.34**4.4★**▲ 64%**](https://www.amazon.com/dp/B0FLY184K2) [**EPAuto Spill Proof Radiator Coolant Filling Funnel Kit**EPAuto**$21.82**4.7★**▲ 17%**](https://www.amazon.com/dp/B01I40ZQWE) [**HORUSDY No-Spill Coolant Funnel Kit Spill Proof Funnel Bleeder with Adapters. Universal Fitment**HORUSDY**$17.35**4.5★**▲ 10%**](https://www.amazon.com/dp/B09XT1X5GQ) [**Thorstone No-Spill Coolant Funnel Kit 16-Piece Universal Spill-Free Radiator Coolant Filling Funnel with Adapters**Thorstone**$17.92**4.6★**— 6%**](https://www.amazon.com/dp/B097BHJJPS)
**~~View all trending →~~**
## **What buyers say about coolant funnel kit**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**19%
*“nice quality set”*
**Ease Of Use**11%
*“Pretty handy”*
**Leak-Proof**10%
*“Did not leak”*
**Coolant**9%
*“worked well for my coolant change”*
**Value For Money**9%
*“Great Value”*
**Efficiency**8%
*“Does it's job”*
**Advertised Vs Actual Product**6%
*“As advertised”*
**Size-Overall**5%
*“Fits securely”*
**Ease Of Cleaning**3%
*“No messes”*
**Maintenance And Repair**2%
*“Great products to have for vehicle repairs”*
### **What buyers complain about **
**Compatibility-Overall**21%
*“Pieces are not compatible”*
**Leak-Proof**19%
*“It leaks”*
**Size-Overall**11%
*“Not large enough”*
**Quality-Overall**10%
*“Quality is pretty low”*
**Coolant**5%
*“coolant was drain”*
**Functionality-Overall**3%
*“The functionality is extremely poor”*
**Instructions/User Manual/Troubleshooting**2%
*“Instructions are useless”*
**Material Quality**2%
*“Very poor material”*
**Value For Money**2%
*“just a little too expensive”*
**Ease Of Use**1%
*“Cant use it”*
### **Top return reasons **
**Size-Overall**26%
**Compatibility-Overall**19%
**Coolant**15%
**Leak-Proof**8%
**Defective Material/Parts**8%
**Functionality-Overall**4%
**Value For Money**4%
**Advertised Vs Actual Product**4%
**Add-Ons/Attachments**3%
**Quality-Overall**1%
## **Common questions**
- **Is coolant funnel kit profitable to sell on Amazon United States?**
- The niche generates $754K/yr across 11 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -5.4%. Flapen's verdict: Skip it (47/100).
- **How competitive is the coolant funnel kit niche?**
- 9 brands and 18 sellers compete. The top 5 products take 81% of clicks and top 5 brands hold 88% of demand.
- **What do buyers complain about in coolant funnel kit?**
- Top complaints mined from reviews: Compatibility-Overall, Leak-Proof, Size-Overall. The return rate is 2.9%.
- **When does demand for coolant funnel kit peak?**
- Demand peaks in Jan–May; the busiest month runs 1.7× the quietest.
- **What does it cost to enter the coolant funnel kit niche?**
- Listings span $17.06–$23.37; the average listing price is $19.56 (sweet spot $15–$100). The average incumbent carries 3,528 reviews — the moat a new listing must climb.
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