---
title: "Honda Gx390 Air Filter — $64K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/patio-lawn-garden/honda-gx390-air-filter"
last_updated: "2026-08-11T01:04:03.152Z"
locale: en
meta:
description: "Niche score 44/100 · $64K/yr market · 26K searches/yr · $14.74 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 44/100 · $64K/yr market · 26K searches/yr · $14.74 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Honda Gx390 Air Filter — $64K/yr Amazon US Niche (2026) - Flapen"
---
# **honda gx390 air filter**
**Skip it**
A small market ($64K/yr) — this niche doesn't clear our bar today.
Market size 16Growth 23Conversion 98Competition 21Returns 90Price range 62Avg price 73Brand share 30Review moat 88Quality gap 24
**Conversion**
**Incredible****17.0%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Great****1.2%**
return rate — above 5% kills the launch gate
**Review moat**
**Great****231.27**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Good****$14.74**
avg listing price — sweet spot $15–$100
**Price range**
**Good****$8.21–$26.31**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Okay****87%**
top-5 brand share — brands hold most of the demand
**Quality gap**
**Bad****4.6★**
avg incumbent rating — lower means beatable quality
**Growth**
**Bad****-3.2%**
90-day search growth — must beat 0% to launch
**Competition**
**Bad****75%**
top-5 click share — a locked-up shelf
**Market size**
**Bad****$64K**
$64K/yr · 26K searches
According to Flapen's Amazon United States niche tracking, honda gx390 air filter is a $64K/yr Amazon United States market (26K searches/yr). The top 5 brands hold 87% of demand. Verdict: Skip it — 44/100.
Data updated Jul 16, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **honda gx390 air filter market data**
- **Units sold / yr**
- **4K–5K**
- avg 250–500/product
- **Revenue / yr**
- **$59K–$74K**
- units × avg price
- **Conversion rate**
- **17.0%**
- **Avg BSR**
- **#453**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **91%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **53 months**
- **Avg seller age**
- **200 days**
## **Competition & brand share**
The top 5 products capture 75% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**9 **▼falling
**Sellers**
**26**
**Top-5 brand share**
**87%**
Top 20: 100%
**Top-5 click share**
**75%**
Top 20: 100%
**Open market**
**8%**
- HOODELL53% - Moosefield13% - TURBOTUNITY8% - KINDZA7% - Panari5% - Poweka5% - Open — no brand owns it (3 brands, 8%)
## **Demand**
Weekly Amazon search volume, last 20 weeks — -3.2% search growth over the last 90 days.
600400Spike '26Mar '26Mar '26Apr '26May '26May '26Jun '26Jul '26
[**Open Trend **](https://flapen.com/research/us/patio-lawn-garden/honda-gx390-air-filter/trend)
## **Top honda gx390 air filter search terms**
- **honda gx390 air filter**14K/yr+1.0%13.1% conv. - **gx390 air filter**6K/yr-7.7%15.7% conv. - **honda gx 390 air filter**3K/yr-8.2%15.5% conv. - **honda gx340 air filter**3K/yr-9.4%14.6% conv. [**All search terms **](https://flapen.com/research/us/patio-lawn-garden/honda-gx390-air-filter/search-terms)
## **Top honda gx390 air 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%10%$6K20%$13K30%$19K40%$26K101001K 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**HOODELL Professional GX390 Air Filter Compatible with Honda GX340 GX 390 11HP 13HP Engine 17210-ZE3-505 17210-ZE3-010 Air Filter**HOODELL**$8.21**4.7★676 rev](https://www.amazon.com/dp/B08NWPDDXB) [2**Air Filter for Honda GX340 GX390 11HP/13HP Engines 1PC Upgraded Reinforced Design Replaces 17210-ZE3-505 & 17210-ZE3-010 Durable Filter for Pressure Washer Generator & Lawn Equipment**Moosefield**$10.92**4.9★23 rev](https://www.amazon.com/dp/B0G79TWFVX) [3**HOODELL 3 Pack Air Filter Fit for Honda GX390 13HP GX340 11HP Engine Pressure Washer Air Cleaner Professional 17210-ZE3-010 17210-ZE3-505 Air Filter**HOODELL**$14.17**4.7★166 rev](https://www.amazon.com/dp/B08R898QT6) [4**HOODELL 5 Pack 17210-ZE3-505 Air Filter Replace 17210-ZE3-010 Air Cleaner Fit for Honda GX390 13HP GX340 11HP Engine Air Filter**HOODELL**$17.92**4.6★181 rev](https://www.amazon.com/dp/B08R88YMDN) [5**Turbotunity GX390 Air Filter Compatible with Honda GX340 GX 390 11HP 13HP Engine 17210-ZE3-505 17210-ZE3-010 Engines Lawn mowers Air Cleaner and More with spark plug**TURBOTUNITY**$10.17**4.6★108 rev](https://www.amazon.com/dp/B0CR9T8XGP)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Air Filter for Honda GX340 GX390 11HP/13HP Engines 1PC Upgraded Reinforced Design Replaces 17210-ZE3-505 & 17210-ZE3-010 Durable Filter for Pressure Washer Generator & Lawn Equipment**Moosefield**$10.92**23 rev7mo ago](https://www.amazon.com/dp/B0G79TWFVX) [**Genuine 17210-ZE3-505 Air Cleaner Filter Element AFZE30 with Spark Plug 98079-55846 BPR5ES for Honda GX340 GX390 Engines Generators**KINDZA**$26.31**13 rev1y ago](https://www.amazon.com/dp/B0DSJZT4K8) [**Turbotunity GX390 Air Filter Compatible with Honda GX340 GX 390 11HP 13HP Engine 17210-ZE3-505 17210-ZE3-010 Engines Lawn mowers Air Cleaner and More with spark plug**TURBOTUNITY**$10.17**108 rev2y ago](https://www.amazon.com/dp/B0CR9T8XGP) [**YAMAKATO GX390 Air Filter w/Housing Cover Air Cleaner Box Adapter Assembly for Honda and Clone GX270 GX340 270cc 301cc 420cc 389cc 188F 190F 192F**YAMAKATO**$23.01**125 rev4y ago](https://www.amazon.com/dp/B09HZXNBXH) [**HOODELL 3 Pack Air Filter Fit for Honda GX390 13HP GX340 11HP Engine Pressure Washer Air Cleaner Professional 17210-ZE3-010 17210-ZE3-505 Air Filter**HOODELL**$14.17**166 rev5y ago](https://www.amazon.com/dp/B08R898QT6)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Air Filter for Honda GX340 GX390 11HP/13HP Engines 1PC Upgraded Reinforced Design Replaces 17210-ZE3-505 & 17210-ZE3-010 Durable Filter for Pressure Washer Generator & Lawn Equipment**Moosefield**$10.92**4.9★**▲ 156%**](https://www.amazon.com/dp/B0G79TWFVX) [**Turbotunity GX390 Air Filter Compatible with Honda GX340 GX 390 11HP 13HP Engine 17210-ZE3-505 17210-ZE3-010 Engines Lawn mowers Air Cleaner and More with spark plug**TURBOTUNITY**$10.17**4.6★**▲ 27%**](https://www.amazon.com/dp/B0CR9T8XGP) [**HIFROM AIR Filter Replacement for Honda GX340 GX390 11HP & 13HP Engine New Aftermarket # 17210-ZE3-505 17210-ZE3-010 100-012 30-417 19-7712 5252697 2893907**HIFROM**$8.27**4.7★**▲ 17%**](https://www.amazon.com/dp/B00SKMUQZO) [**Genuine 17210-ZE3-505 Air Cleaner Filter Element AFZE30 with Spark Plug 98079-55846 BPR5ES for Honda GX340 GX390 Engines Generators**KINDZA**$26.31**4.3★**— 4%**](https://www.amazon.com/dp/B0DSJZT4K8) [**HOODELL Professional GX390 Air Filter Compatible with Honda GX340 GX 390 11HP 13HP Engine 17210-ZE3-505 17210-ZE3-010 Air Filter**HOODELL**$8.21**4.7★**— 6%**](https://www.amazon.com/dp/B08NWPDDXB)
**~~View all trending →~~**
## **What buyers say about honda gx390 air filter**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**43%
*“Fit good”*
**Value For Money**12%
*“Fair price”*
**Quality-Overall**12%
*“Good outer steel frame”*
**Filtration**4%
*“Great Air Filter Replacement”*
**Efficiency**4%
*“Works perfectly”*
**Advertised Vs Actual Product**4%
*“Actually as described”*
**Material Quality**4%
*“The filter is made very well with high quality materials”*
**Pressure**3%
*“Worked great on old Honda pressure washer”*
**Motor Power**3%
*“Engine runs like new now”*
**Strength**2%
*“Well constructed”*
### **What buyers complain about **
**Filtration**33%
*“It is not a high quality filter”*
**Size-Overall**21%
*“too tall”*
**Thickness**14%
*“it's thicker material”*
**Mounting**7%
*“The upper mounting gromet is too thick”*
**Compression**5%
*“I need to glue my broken filter mine overnight because I needed the compressor running ASAP it was pretty labors to glue mine broken”*
**Ease Of Use**5%
*“not good to run without it”*
### **Top return reasons **
**Size-Overall**56%
**Filtration**19%
**Compatibility-Overall**12%
**Functionality-Overall**7%
**Defective Material/Parts**3%
**Advertised Vs Actual Product**2%
**Shape/Style**1%
**Assembly/Installation**1%
## **Common questions**
- **Is honda gx390 air filter profitable to sell on Amazon United States?**
- The niche generates $64K/yr across 11 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -3.2%. Flapen's verdict: Skip it (44/100).
- **How competitive is the honda gx390 air filter niche?**
- 9 brands and 26 sellers compete. The top 5 products take 75% of clicks and top 5 brands hold 87% of demand.
- **What do buyers complain about in honda gx390 air filter?**
- Top complaints mined from reviews: Filtration, Size-Overall, Thickness. The return rate is 1.2%.
- **What does it cost to enter the honda gx390 air filter niche?**
- Listings span $8.21–$26.31; the average listing price is $14.74 (sweet spot $15–$100). The average incumbent carries 231 reviews — the moat a new listing must climb.
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