onan 4000 fuel pump
Worth a lookShows a sweet-spot price point ($38.57 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Avg price
Incredible$38.57avg listing price — sweet spot $15–$100
Review moat
Great209.55avg incumbent reviews — the moat a new listing must climb
Returns
Great1.4%return rate — above 6% kills the launch gate
Price range
Great$13.74–$110.79cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Good6.9%search→purchase rate — share of searches ending in a sale
Growth
Good+50.7%90-day search growth — must beat 0% to launch
Brand share
Good67%top-5 brand share — brands hold most of the demand
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Competition
Okay58%top-5 click share — leaders hold, buyers still browse
Market size
Bad$70K$70K/yr · 26K searches
Competition
The top 5 products take 58% of clicks — established leaders, but buyers still shop beyond them.Brands
18 falling
Sellers
58
Top-5 brand share
67%
Open market
29%
- GPS30%
- partszen22%
- RARAYC6%
- CNRAQR5%
- Podoy4%
- Aspaton4%
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 22 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
partszen 149-2311 Fuel Pump with 149-2457 Fuel Filter Tune Up Kit for Onan Cummins Generator 4000 4KW Microlite MicroQuiet Generators Parts with 1403280 Air Filter
partszen$34.394.1★404 rev
GPS GENERATOR PARTS SPECIALIST Tune Up Kit for Onan RV Generator Model KY 4000 with ONAMAX 15W40 oil for use with Spec A - N
GPS$102.944.8★71 rev
GPS GENERATOR PARTS SPECIALIST Tune Up Kit for Cummins Onan RV Generator Model KY 4000 with ONAMAX 10W30 oil for use with Spec P - R
GPS$110.794.7★224 rev
GPS GENERATOR PARTS SPECIALIST Tune Up Kit for Onan RV generator model KY 4000 Spec A-R
GPS$69.504.7★615 rev
RARAYC 149-2311 Electric Fuel Pump and 149-2457 Fuel Filter Compatible with Onan Cummins RV 4000 4KW Microlite MicroQuiet Generator Parts
RARAYC$29.804.3★23 rev
Newest
by launch date
KAKATHU 149-2311 Fuel Pump Tune Up Kit with 149-2457 Fuel Filter & 1403280 Air Filter Compatible with Cummins Onan 3600W & 4000W MicroQuiet Microlite KY Series Gas RV Generator Replace # E11007
KAKATHU$27.422 rev
146-0785 Carburetor for Onan Cummins Generator 4000-Watt A042P619 A041D736 Carb with Tune-Up Kit Replaces for Microquiet 4000 Watt 4KYFA26100 4KYFA26100P 4KY26100R (Carb with Tune Up Kit)
DKIIGAME$46.354 rev
149-2311 Fuel Pump 149-2457 Fuel Filter 1403280 Air Filter Tune Up Kit Compatible with Cummins Onan Microlite Microquiet RV 4000 4KW Generator Parts
AULDAY$32.4112 rev
SIMPERAC 149-2311 Fuel Pump 149-2457 Fuel Filter for Onan 4000 Generator 3600 4000 Watts RV QG 4000 KY Microlite Microquiet Generators E11007 A029F889 A064S966 Fuel Pump Spark Plug Parts
SIMPERAC$23.9114 rev
LIDSCURA 149-2311 Fuel Pump and Fuel Filter Replacement for Cummins Onan QG4000 4000 4KW Replacement for Camp Power QG RV Generators Replaces 149-2457
LIDSCURA$22.7010 rev
Trending
90-day click momentumKAKATHU 149-2311 Fuel Pump Tune Up Kit with 149-2457 Fuel Filter & 1403280 Air Filter Compatible with Cummins Onan 3600W & 4000W MicroQuiet Microlite KY Series Gas RV Generator Replace # E11007
KAKATHU$27.424.5★
146-0785 Carburetor for Onan Cummins Generator 4000-Watt A042P619 A041D736 Carb with Tune-Up Kit Replaces for Microquiet 4000 Watt 4KYFA26100 4KYFA26100P 4KY26100R (Carb with Tune Up Kit)
DKIIGAME$46.353.3★
149-2311 Fuel Pump 149-2457 Fuel Filter 1403280 Air Filter Tune Up Kit Compatible with Cummins Onan Microlite Microquiet RV 4000 4KW Generator Parts
AULDAY$32.414.6★
Onan OnaMax SAE 15W-40 Engine Oil 32 oz.
Cummins$16.244.8★
LIDSCURA 149-2311 Fuel Pump and Fuel Filter Replacement for Cummins Onan QG4000 4000 4KW Replacement for Camp Power QG RV Generators Replaces 149-2457
LIDSCURA$22.705.0★
Demand & seasonality
Weekly Amazon search volume, last 102 weeks — +50.7% search growth over the last 90 days.Peak months: Jun, Jul, Aug · busiest ÷ quietest = 3.3×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Perfect fit”
“Great value”
“The product is fairly well made”
“the components are put together well”
“Generator is now more efficient”
“Build quality feels premium with durable materials that handle fuel blends well—no leaks or issues after months of hot Florida use”
“which makes this a practical option for anyone who performs their own generator maintenance”
“As advertised”
“The only think good is the air filter”
“Using the manufacturer-recommended oil just makes sense”
What buyers complain about
“Did not work”
“They are cheap for a reason”
“Not worth the savings”
“ours had too much pressure”
“Some last a while, some dont”
“Electrical connection for negative wire came off from inside the pump body”
“No means of reattaching due to the crimped end cap”
“Fuel line was not the correct size”
“The fittings include with the kit don't match the picture”
“The inline fuel filter of course is a bit hard to access”