onan 4000 tune up kit
Worth a lookShows a sweet-spot price point ($63.45 avg), but prices mostly outside the sweet spot ($8.25–$623.76) keeps it on the watch list.
Avg price
Great$63.45avg listing price — sweet spot $15–$100
Review moat
Great340.48avg incumbent reviews — the moat a new listing must climb
Returns
Great1.9%return rate — above 6% kills the launch gate
Competition
Good49%top-5 click share — leaders hold, buyers still browse
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Brand share
Good73%top-5 brand share — brands hold most of the demand
Growth
Good+24.9%90-day search growth — must beat 0% to launch
Conversion
Okay3.8%search→purchase rate — share of searches ending in a sale
Market size
Okay$108K$108K/yr · 44K searches
Price range
Bad$8.25–$623.76cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
The top 5 products take 49% of clicks — established leaders, but buyers still shop beyond them.Brands
16 rising
Sellers
70
Top-5 brand share
73%
Open market
23%
- Cummins37%
- GPS15%
- FLYINGAMZ8%
- ATRACYPART7%
- Topkidame5%
- partszen4%
Product shelf
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 25 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
CUMMINS NW Cummins - 149-2341-01 149234101 Onan Fuel Filter
Cummins$25.884.8★1,331 rev
149-2341-01 Fuel Filter Pump Replacement For Cummins Onan model Compatible with Marquis Gold HGJAB Emerald Advantage HGJAC Marquis BGM & NHM Gasoline Generators Marquis Platinum/QG Series
FLYINGAMZ$14.624.4★1,381 rev
Carburetor Carb for Onan 146-0785 146-0803 Generator KY Series A042P619 for Onan Cummins A041D736 Microquiet 4000 Watt 4KYFA26100 4KYFA26100P 4KYFA26100K Generator Replaces 146-0759
Topkidame$35.114.0★64 rev
GPS GENERATOR PARTS SPECIALIST Tune Up Kit for Onan RV generator model KY 4000 Spec A-R
GPS$69.504.7★615 rev
Cummins NW Cummins 3271413 Onan Circuit Board
Cummins$623.764.1★69 rev
Newest
by launch date
Oil Change Tune Up Kit Fit For Onan RV QG Generators 5500 7000 HGJAA HGJAB HGJAC Includes 122-0836 Oil Filter 140-3116 Air Filter 149-2341-01 Fuel Filter E11015 Fuel Pump F5TC Spark Plug
ZJTBLL$31.4616 rev
FLTRUCKTOP Filter Kit for Onan RV QG Generators 5500 7000
FLTRUCKTOP$48.7916 rev
140-3116 Air Filter 122-0836 Oil Filter 149-2341 Fuel Filter 167-1638 Sprk Plug Tune Up Kit Compatible With Onan RV QG 5500 7000 Marquis Gold Platinum EFI HGJAA HGJAB HGJAC
AULDAY$27.922 rev
1403280 Air Filter Tune Up Kit Fit for Cummins Onan Microlite Microquiet RV 4000 4KW Generator Parts With 149-2311 E11007 Fuel Pump and 149-2457 Fuel Filter
TSHOU$32.4219 rev
Carburetor Carb for Onan 146-0785 146-0803 Generator KY Series A042P619 for Onan Cummins A041D736 Microquiet 4000 Watt 4KYFA26100 4KYFA26100P 4KYFA26100K Generator Replaces 146-0759
Topkidame$35.1164 rev
Trending
90-day click momentum
Onan OnaMax SAE 15W-40 Engine Oil 32 oz.
Cummins$16.244.8★
140-3116 Air Filter 122-0836 Oil Filter 149-2341 Fuel Filter 167-1638 Sprk Plug Tune Up Kit Compatible With Onan RV QG 5500 7000 Marquis Gold Platinum EFI HGJAA HGJAB HGJAC
AULDAY$27.925.0★
140-3280 Air Filter Replace for Onan 140-3280 48-2017 140-3295 140-2852 Fits Onan 3600 4000 Generator Air Cleaner Element compatible with Camp Power QG RV MicroLite QG RV
Deflife$8.254.7★
Oil Change Tune Up Kit Fit For Onan RV QG Generators 5500 7000 HGJAA HGJAB HGJAC Includes 122-0836 Oil Filter 140-3116 Air Filter 149-2341-01 Fuel Filter E11015 Fuel Pump F5TC Spark Plug
ZJTBLL$31.464.3★
FLTRUCKTOP Filter Kit for Onan RV QG Generators 5500 7000
FLTRUCKTOP$48.793.7★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +24.9% search growth over the last 90 days.Peak months: Aug, Oct · busiest ÷ quietest = 2.3×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Direct fit”
“Good quality”
“well worth it”
“Easy installation”
“As advertised”
“The air filter seems to be of good quality”
“Generator is now more efficient”
“Works perfectly”
“Works great”
“Perfect kit”
What buyers complain about
“Did not work”
“died in ~5minutes”
“Dont trust the fuel filter”
“The air filter is the worst quality”
“I wish I had replaced it sooner”
“Received a used carburetor and hose only”
“They contacted us to let us know that it's not compatible with our ONAN generator”
“Cummins part number”
“leaking fuel into the engine”
“ours had too much pressure”