---
title: "Coolant Filter — $129K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/coolant-filter"
last_updated: "2026-08-10T16:31:23.084Z"
locale: en
meta:
description: "Niche score 44/100 · $129K/yr market · 45K searches/yr · $55.86 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 44/100 · $129K/yr market · 45K searches/yr · $55.86 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Coolant Filter — $129K/yr Amazon US Niche (2026) - Flapen"
---
# **coolant filter**
**Skip it**
Soft demand (-36.0% this quarter) — this niche doesn't clear our bar today.
Market size 29Growth 7Conversion 59Competition 26Returns 81Price range 55Avg price 91Brand share 26Review moat 86Quality gap 62
**Avg price**
**Great****$55.86**
avg listing price — sweet spot $15–$100
**Review moat**
**Great****284.15**
avg incumbent reviews — the moat a new listing must climb
**Returns**
**Great****1.7%**
return rate — above 5% kills the launch gate
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Conversion**
**Good****5.1%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Good****$10.70–$164.32**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Okay****$129K**
$129K/yr · 45K searches
**Competition**
**Okay****69%**
top-5 click share — leaders hold, buyers still browse
**Brand share**
**Okay****90%**
top-5 brand share — brands hold most of the demand
**Growth**
**Bad****-36.0%**
90-day search growth — must beat 0% to launch
**Signals**[** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")
According to Flapen's Amazon United States niche tracking, coolant filter is a $129K/yr Amazon United States market (45K searches/yr). The top 5 brands hold 90% of demand. Verdict: Skip it — 44/100.
Data updated Jul 9, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **coolant filter market data**
- **Units sold / yr**
- **2K–3K**
- avg 100–250/product
- **Revenue / yr**
- **$112K–$140K**
- units × avg price
- **Conversion rate**
- **5.1%**
- **Avg BSR**
- **#3,817**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **54%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **67 months**
- **Avg seller age**
- **165 days**
## **Competition & brand share**
The top 5 products take 69% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**8 **▼falling
**Sellers**
**82**
**Top-5 brand share**
**90%**
Top 20: 100%
**Top-5 click share**
**69%**
Top 20: 100%
**Open market**
**5%**
- Wix41% - WIKIBB19% - GJYSYP11% - BANGTE10% - Mishimoto9% - Auto Parts Prodigy5% - Open — no brand owns it (2 brands, 5%)
## **Demand**
Weekly Amazon search volume, last 14 weeks — -36.0% search growth over the last 90 days.
800600Spike '26Apr '26Apr '26May '26May '26May '26Jun '26Jun '26
[**Open Trend **](https://flapen.com/research/us/automotive/coolant-filter/trend)
## **Top coolant filter search terms**
- **coolant filter**19K/yr-36.5%1.8% conv. - **coolant filter kit**14K/yr-40.2%0.8% conv. - **wix 24070 coolant filter**4K/yr+0.9%20.7% conv. - **inline coolant filter**6K/yr-50.5%2.0% conv. - **wix 24070**2K/yr-25.4%15.5% conv. [**All search terms **](https://flapen.com/research/us/automotive/coolant-filter/search-terms)
## **Top coolant filter 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%$19K30%$39K45%$58K60%$77K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
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
[1**WIX Filters - 24070 Heavy Duty Coolant Spin-On Filter Pack of 1**Wix**$14.86**4.8★2,058 rev](https://www.amazon.com/dp/B000CSD29Q) [2**GJYSYP 5/8 in. Inline Coolant Filter Universal Filter and Inspection System Stainless Steel Screen For Pipe Bore 0.62 in.**GJYSYP**$38.82**4.4★39 rev](https://www.amazon.com/dp/B0F5F1SQP3) [3**WIKIBB 1-1/2 Universal Filter Inline Heater Core Coolant Filter and Inspection System Stainless Steel Filter Mesh Matching Fixture**WIKIBB**$41.80**3.6★114 rev](https://www.amazon.com/dp/B0D1BZW5MC) [4**BANGTE WF2071 Coolant Filter Spin-On with Filter Base Compatible with Freightliner International Peterbilt model Cummins ISL ISC ISB ISX Caterpillar C16 C15 C13 C12 Engine**BANGTE**$31.50**4.8★10 rev](https://www.amazon.com/dp/B0CXRLWJWL) [5**Mishimoto MMCFK-F2D-03BL Coolant Filter Kit Fits Ford 6.0L Powerstroke 2003-2007 Blue**Mishimoto**$164.32**4.6★585 rev](https://www.amazon.com/dp/B00V5R21P4)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**WIKIBB 5/8 Universal Filter Inline Heater Core Coolant Filter Red**WIKIBB**$35.67**5 rev5mo ago](https://www.amazon.com/dp/B0GJD4RNBG) [**WIKIBB 1-1/2 Universal Filter Inline Heater Core Coolant Filter Red**WIKIBB**$42.99**4 rev5mo ago](https://www.amazon.com/dp/B0GJCXRQD4) [**ZXTQWX Applicable to 24070 Coolant Spin-On Filter**ZXTQWX**$10.70**2 rev10mo ago](https://www.amazon.com/dp/B0FNR5JWRW) [**GJYSYP 5/8 in. Inline Coolant Filter Universal Filter and Inspection System Stainless Steel Screen For Pipe Bore 0.62 in.**GJYSYP**$38.82**39 rev1y ago](https://www.amazon.com/dp/B0F5F1SQP3) [**BANGTE WF2077 Coolant filter with base Compatible with Cummins Engine B6.7 ISL9 Replace Donaldson P554685 Fleetguard WF2077 John Deere RE11992**BANGTE**$32.94**4 rev1y ago](https://www.amazon.com/dp/B0DMTS2PPY)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**WIKIBB 5/8 Universal Filter Inline Heater Core Coolant Filter Red**WIKIBB**$35.67**4.8★**▲ 273%**](https://www.amazon.com/dp/B0GJD4RNBG) [**WIKIBB 1-1/2 Universal Filter Inline Heater Core Coolant Filter Red**WIKIBB**$42.99**4.2★**▲ 254%**](https://www.amazon.com/dp/B0GJCXRQD4) [**ZXTQWX Applicable to 24070 Coolant Spin-On Filter**ZXTQWX**$10.70**4.5★**▲ 123%**](https://www.amazon.com/dp/B0FNR5JWRW) [**Mishimoto MMCFK-F2D-03BK Coolant Filter Kit Fits Ford 6.0L Powerstroke 2003-2007 Black**Mishimoto**$159.37**4.6★**▲ 99%**](https://www.amazon.com/dp/B00V5R21KO) [**Donaldson P554685 Coolant Filter**Donaldson**$18.23**4.6★**▲ 31%**](https://www.amazon.com/dp/B01F4US6NI)
**~~View all trending →~~**
## **What buyers say about coolant filter**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Filtration**13%
*“Great filter”*
**Quality-Overall**12%
*“decent quality”*
**Efficiency**9%
*“works well”*
**Assembly/Installation**9%
*“Easy to install”*
**Ease Of Cleaning**7%
*“Easy to clean”*
**Advertised Vs Actual Product**6%
*“Works as expected”*
**Value For Money**5%
*“Great Value for money”*
**Design-Overall**5%
*“But I liked the way it was made”*
**Coolant**5%
*“Great for aftermarket coolant filtering setup on my 2004 f250”*
**Leak-Proof**4%
*“No leaks”*
### **What buyers complain about **
**Leak-Proof**25%
*“it keeps leaking even after I have tightened it up a couple times”*
**Pressure**14%
*“Not for low pressure systems”*
**Quality-Overall**12%
*“same thing poor quality fitting”*
**Rusts/Corrodes**4%
*“The first thing I noticed was how rusty”*
**Heating**4%
*“My heater core kept plugging up”*
**Coolant**4%
*“dirty the cooling system was”*
**Instructions/User Manual/Troubleshooting**4%
*“The kit does not come with instructions”*
**Filtration**4%
*“Doesnt include a filter”*
**Jamming/Clogging**2%
*“Ive had iasues with my heater core clogging so this is inline to my heater core”*
**Value For Money**2%
*“Waste of time and money”*
### **Top return reasons **
**Size-Overall**22%
**Filtration**19%
**Coolant**15%
**Compatibility-Overall**9%
**Leak-Proof**8%
**Advertised Vs Actual Product**6%
**Defective Material/Parts**5%
**Value For Money**3%
**Ease Of Use**2%
**Functionality-Overall**2%
## **Common questions**
- **Is coolant filter profitable to sell on Amazon United States?**
- The niche generates $129K/yr across 13 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is -36.0%. Flapen's verdict: Skip it (44/100).
- **How competitive is the coolant filter niche?**
- 8 brands and 82 sellers compete. The top 5 products take 69% of clicks and top 5 brands hold 90% of demand.
- **What do buyers complain about in coolant filter?**
- Top complaints mined from reviews: Leak-Proof, Pressure, Quality-Overall. The return rate is 1.7%.
- **What does it cost to enter the coolant filter niche?**
- Listings span $10.70–$164.32; the average listing price is $55.86 (sweet spot $15–$100). The average incumbent carries 284 reviews — the moat a new listing must climb.
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