honda gx390 starter
Skip itA small market ($53K/yr) — this niche doesn't clear our bar today.
Avg price
Incredible$45.22avg listing price — sweet spot $15–$100
Price range
Incredible$18.86–$86.05cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Great130.31avg incumbent reviews — the moat a new listing must climb
Conversion
Great10.8%search→purchase rate — share of searches ending in a sale
Quality gap
Great4.2★avg incumbent rating — lower means beatable quality
Returns
Good2.5%return rate — above 5% kills the launch gate
Brand share
Okay83%top-5 brand share — brands hold most of the demand
Competition
Bad74%top-5 click share — a locked-up shelf
Growth
Bad-10.7%90-day search growth — must beat 0% to launch
Market size
Bad$53K$53K/yr · 11K searches
According to Flapen's Amazon United States niche tracking, honda gx390 starter is a $53K/yr Amazon United States market (11K searches/yr). The top 5 brands hold 83% of demand. Verdict: Skip it — 49/100.
Data updated Jul 9, 2026 · scored weekly · How we score niches
honda gx390 starter market data
- Units sold / yr
- 1K–2K
- avg 100–250/product
- Revenue / yr
- $57K–$68K
- units × avg price
- Conversion rate
- 10.8%
- Avg BSR
- #575
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 100%
- Out of stock
- 0.0%
- Avg brand age
- 51 months
- Avg seller age
- 202 days
Competition & brand share
The top 5 products capture 74% of clicks — a locked-up shelf that new listings rarely crack.Brands
10 rising
Sellers
12
Top-5 brand share
83%
Top 20: 100%
Top-5 click share
74%
Top 20: 100%
Open market
12%
- YAMAKATO47%
- RANSOTO14%
- Parts Player10%
- DynaVim Parts8%
- Ezamintaly5%
- San-IgniteX4%
- Open — no brand owns it (4 brands, 12%)
Demand
Weekly Amazon search volume, last 23 weeks — -10.7% search growth over the last 90 days.Top honda gx390 starter 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.
All 13 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
YAMAKATO GX340 GX390 Starter Motor w/Solenoid for Honda Electric Start Toro Dingo 11-13HP 128000-2750 31210ZB80130 31210ZE3013 31210ZE30130 31210-ZE3-023 DB5B6 DB5B8 SND0288 41052044
YAMAKATO$39.854.4★93 rev
Starter Motor Compatible with Honda GX340 GX390 GX420 11HP 13HP 16HP Afron Allmand Ditch Witch with Solenoid Replaces 1280002750 31210ZB80130 31210ZE30130 31210-ZE3-023 DB5B6 DB5B8 SND0288
RANSOTO$33.734.4★348 rev
OEG Parts New Starter Compatible with Honda Toro GX340 GX390 Dingo 11-13HP 1280002750 31210ZB80130 31210ZE3013 31210ZE30130 31210-ZE3-023 DB5B6 DB5B8 SND0288 41052044
Parts Player$36.264.5★423 rev
New Honda GX340 GX390 GX420 Starter 11-13HP Toro Dingo TX-413 2004 2005 2006 2007 2008 410-52044 128000-2750 128000-3400 31210-ZE3-013 31210-ZE3-023 9712809-275 113231 DB5B6 DB5B8 SND0288
DynaVim Parts$45.334.3★46 rev
Ezamintaly Starter Motor for Honda GX340 GX390 GX420 for Toro Dingo TX-413 11-13HP for Ditch Witch Afron Allmand 31210-ZE3-013 31210-ZE3-023 31210ZE30130 DB5B6 DB5B8 1280002750
Ezamintaly$30.234.1★8 rev
Newest
by launch date
Starter for Honda GX390 GX340 GX420 11HP 13HP 16HP/Toro Dingo TX-413 2004-2008/Ditch Witch FM13/1030/1230/100SX/Allmand EZ1100 1994-2005/Afron PA-300/350 1990-2006 31210ZB80130
OLIFANT$42.472 rev
YAMAKATO GX390 High Power Starter Motor for Honda GX340 Electric Start Toro 11-16HP 128000-2750 31210-ZB8-0130 31210-ZE3-013 31210-ZE3-0130 31210-ZE3-023 DB5B6 DB5B8 SND0288 w/Solenoid
YAMAKATO$49.404 rev
San-IgniteX Electric Starter Motor for Honda GX340/GX390 & Harbor Freight Predator 420cc OEM- 60340/60349/69736 - Compatible with Toro Dingo TX-413 & Cummins Onan HomeSite Power 6500 Generator
San-IgniteX$35.0121 rev
SOFO Electric Starter Kit for Honda GX340 GX390 11HP 13HP Engines and Generators w/Flywheel Starter Motor Key Switch Box Coil Ignition
SOFO$86.0523 rev
Complete Starter Kit for Honda GX340 / GX390 Engines 12V Starter Solenoid Ring Gear Ignition Key Switch & Wiring Fits GX340 (11HP) GX390 (13HP) Replaces 31210-ZE3-033/31210-ZE3-013
RANSOTO$84.8327 rev
Trending
90-day click momentumStarter for Honda GX390 GX340 GX420 11HP 13HP 16HP/Toro Dingo TX-413 2004-2008/Ditch Witch FM13/1030/1230/100SX/Allmand EZ1100 1994-2005/Afron PA-300/350 1990-2006 31210ZB80130
OLIFANT$42.474.0★
San-IgniteX Electric Starter Motor for Honda GX340/GX390 & Harbor Freight Predator 420cc OEM- 60340/60349/69736 - Compatible with Toro Dingo TX-413 & Cummins Onan HomeSite Power 6500 Generator
San-IgniteX$35.013.8★
YAMAKATO GX390 High Power Starter Motor for Honda GX340 Electric Start Toro 11-16HP 128000-2750 31210-ZB8-0130 31210-ZE3-013 31210-ZE3-0130 31210-ZE3-023 DB5B6 DB5B8 SND0288 w/Solenoid
YAMAKATO$49.404.6★
YAMAKATO GX340 GX390 Pull Start Recoil Starter Assembly for Honda GX 340 GX 390 389 420 439 cc 11 13 hp Generator Replaces 28400-ZE3-W01ZA Pull Cord Rope Aftermarket
YAMAKATO$18.864.6★
YAMAKATO GX340 GX390 Starter Motor w/Solenoid for Honda Electric Start Toro Dingo 11-13HP 128000-2750 31210ZB80130 31210ZE3013 31210ZE30130 31210-ZE3-023 DB5B6 DB5B8 SND0288 41052044
YAMAKATO$39.854.4★
What buyers say about honda gx390 starter
What buyers praise and complain about, mined from review topics.What buyers love
“Fit perfectly”
“Good quality”
“Works good reasonable price”
“Works fine”
“As described”
“Esy to Install, Works perfectly”
“Plug and play and got my work done just like that”
“easy to overcome”
“Starter motor works fine”
“Feels buttery smooth to pull”
What buyers complain about
“Trash”
“died”
“This difference is not mentioned in the description or shown in any of the pictures”
“It does not fit the Westinghouse 9500 Watt generator”
“people need a real life one thing or if you are putting these starters on the mini excavator most of those mini excavator don't have a charging system so you want to keep Battery tenders on at night”
“do not work”
“product didnt function correctly”
“Then smoke came out of it”
“As mentioned the charge stator bolts are to short”
“Only downside is it feels a little lighter than OEM”
Top return reasons
Common questions
- Is honda gx390 starter profitable to sell on Amazon United States?
- The niche generates $53K/yr across 13 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is -10.7%. Flapen's verdict: Skip it (49/100).
- How competitive is the honda gx390 starter niche?
- 10 brands and 12 sellers compete. The top 5 products take 74% of clicks and top 5 brands hold 83% of demand.
- What do buyers complain about in honda gx390 starter?
- Top complaints mined from reviews: Quality-Overall, Durability, Advertised Vs Actual Product. The return rate is 2.5%.
- What does it cost to enter the honda gx390 starter niche?
- Listings span $18.86–$86.05; the average listing price is $45.22 (sweet spot $15–$100). The average incumbent carries 130 reviews — the moat a new listing must climb.