---
title: "Mercruiser 3.0 Carburetor — $80K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/mercruiser-3-0-carburetor"
last_updated: "2026-08-10T14:54:39.633Z"
locale: en
meta:
description: "Niche score 51/100 · $80K/yr market · 31K searches/yr · $97.92 avg price. A small market ($80K/yr) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 51/100 · $80K/yr market · 31K searches/yr · $97.92 avg price. A small market ($80K/yr) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Mercruiser 3.0 Carburetor — $80K/yr Amazon US Niche (2026) - Flapen"
---
# **mercruiser 3.0 carburetor**
**Worth a look**
Shows demand growing +218.3% this quarter, but a small market ($80K/yr) keeps it on the watch list.
Market size 20Growth 98Conversion 33Competition 29Returns 21Price range 83Avg price 76Brand share 28Review moat 97Quality gap 78
**Growth**
**Incredible****+218.3%**
90-day search growth — must beat 0% to launch
**Review moat**
**Incredible****61.18**
avg incumbent reviews — the moat a new listing must climb
**Price range**
**Great****$16.93–$114.56**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Great****4.3★**
avg incumbent rating — lower means beatable quality
**Avg price**
**Great****$97.92**
avg listing price — sweet spot $15–$100
**Conversion**
**Okay****2.7%**
search→purchase rate — share of searches ending in a sale
**Competition**
**Okay****68%**
top-5 click share — leaders hold, buyers still browse
**Brand share**
**Okay****88%**
top-5 brand share — brands hold most of the demand
**Returns**
**Bad****6.0%**
return rate — above 5% kills the launch gate
**Market size**
**Bad****$80K**
$80K/yr · 31K searches
**Signals**[** Trending**](https://flapen.com/research/niches?market=us&signal=trending "Search growth > 100% (90d)") [** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500") [** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%") [** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")
According to Flapen's Amazon United States niche tracking, mercruiser 3.0 carburetor is a $80K/yr Amazon United States market (31K searches/yr). The top 5 brands hold 88% of demand. Demand peaks in May–Jun–Jul–Aug. Verdict: Worth a look — 51/100.
Data updated Jul 9, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **mercruiser 3.0 carburetor market data**
- **Units sold / yr**
- **750–1K**
- avg 0–100/product
- **Revenue / yr**
- **$73K–$98K**
- units × avg price
- **Conversion rate**
- **2.7%**
- **Avg BSR**
- **#3,481**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **88%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **50 months**
- **Avg seller age**
- **183 days**
## **Competition & brand share**
The top 5 products take 68% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**11 **▼falling
**Sellers**
**14**
**Top-5 brand share**
**88%**
Top 20: 100%
**Top-5 click share**
**68%**
Top 20: 100%
**Open market**
**8%**
- THUNDERMINGO56% - liriuda11% - XIAORENWU9% - NENKUTEN7% - YBATUWU5% - FQRANBO3% - Open — no brand owns it (5 brands, 8%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +218.3% search growth over the last 90 days.
1K750Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: May, Jun, Jul, Aug · busiest ÷ quietest = 12.5×
[**Open Trend **](https://flapen.com/research/us/automotive/mercruiser-3-0-carburetor/trend)
## **Top mercruiser 3.0 carburetor search terms**
- **mercruiser 3.0 carburetor**21K/yr+231.2%2.8% conv. - **sae j1223 marine carburetor**6K/yr+294.5%2.3% conv. - **mercruiser carburetor**4K/yr+76.2%0.7% conv. [**All search terms **](https://flapen.com/research/us/automotive/mercruiser-3-0-carburetor/search-terms)
## **Top mercruiser 3.0 carburetor 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%$8K20%$16K30%$24K40%$32K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 17 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**THUNDERMINGO New Marine Carburetor for Mercruiser 3.0 Carburetor 2 Barrel for Mercury Mercarb 3.0L 2.5L 4CYL Engine with Jets and Gasket W/Electric choke Long Linkage 3310-864940A01 8M0045397 Black**THUNDERMINGO**$114.41**4.2★92 rev](https://www.amazon.com/dp/B0B4N3T92P) [2**Marine Carburetor for Mercruiser 3.0L 2.5L 2 barrel Carburetor 4 CYL Engines Mercarb Carb with Jets Long Linkage and Gaskets Electric choke Replace 3310-864940A01 Base Bolt Pattern 3 3/4 X 2 inches**THUNDERMINGO**$106.58**4.1★108 rev](https://www.amazon.com/dp/B0BVB6MCBX) [3**Mercruiser 3.0 Carburetor Black Marine Carb 2 Barrel for Mercruiser Carburetor 3.0L 2.5 4CYL Engine 3310-864940A01 3310-8M0045397 Mercarb w/Electric Choke & Short Long Linkage Gasket Kit**liriuda**$114.56**4.5★23 rev](https://www.amazon.com/dp/B0F3WY6VTZ) [4**Marine Carburetor for Mercruiser 3.0L 2.5L 2 Barrel Carburetor Mercarb fits for Mercury 4 CYL Engines with Jets Short Linkage Gaskets Electric choke 3310-864940A01 Base Bolt Pattern 3 3/4 X 2 inches**THUNDERMINGO**$104.39**4.4★14 rev](https://www.amazon.com/dp/B0F8HQX3CD) [5**Marine Carburetor for Mercruiser Carburetor 3.0L 2.5L 2 Barrel Carb 4CYL Engine 3310-8M0045397 864940A01 Black Mercarb w/Electric Choke Jet Long Linkage Gasket Base Bolt Pattern is 3 3/4 X 2 inches**XIAORENWU**$114.41**4.7★14 rev](https://www.amazon.com/dp/B0F43MCV2K)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Black 3310-864940A01 Marine Carburetor For Mercruiser 3.0 L 2.5L 2 Barrel Carburetor 4Cyl Engine With Electric Choke Long Linkage Gasket Jets Replace 8M0045397**Generic**$81.31**1 rev10mo ago](https://www.amazon.com/dp/B0FN7J952L) [**8M0045397 Marine Carburetor 2 Barrel Fit for Mercruiser 3.0 2.5L Carburetor 4 CYL Engine with w/Electric Choke Jets Long Linkage and Gasket nut Replace 3310-864940A01 3310864940A01**JAVENYIMAN**$91.30**3 rev11mo ago](https://www.amazon.com/dp/B0FL6QHTZJ) [**Marine Carburetor for Mercruiser 3.0 Carburetor 2 Barrel Carb for Mercury Mercarb 3.0L 2.5L 4CYL Engine with Jets and W/Electric choke Long Linkage Gasket 3310-864940A01 8M0045397**FQRANBO**$88.79**11 rev11mo ago](https://www.amazon.com/dp/B0FKFW92PT) [**Mercruiser 3.0 Carburetor Black Marine Carb 2 Barrel for Mercruiser Carburetor 3.0L 2.5 4CYL Engine 3310-864940A01 3310-8M0045397 Mercarb w/Electric Choke & Short Long Linkage Gasket Kit**liriuda**$114.56**23 rev1y ago](https://www.amazon.com/dp/B0F3WY6VTZ) [**Marine Carburetor for Mercruiser Carburetor 3.0L 2.5L 2 Barrel Carb 4CYL Engine 3310-8M0045397 864940A01 Black Mercarb w/Electric Choke Jet Long Linkage Gasket Base Bolt Pattern is 3 3/4 X 2 inches**XIAORENWU**$114.41**14 rev1y ago](https://www.amazon.com/dp/B0F43MCV2K)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Marine Carburetor for Mercruiser 3.0L 2.5L 2 barrel Carburetor 4 CYL Engines Mercarb Carb with Jets Long Linkage and Gaskets Electric choke Replace 3310-864940A01 Base Bolt Pattern 3 3/4 X 2 inches**THUNDERMINGO**$106.58**4.1★**▲ 104%**](https://www.amazon.com/dp/B0BVB6MCBX) [**Black 3310-864940A01 Marine Carburetor For Mercruiser 3.0 L 2.5L 2 Barrel Carburetor 4Cyl Engine With Electric Choke Long Linkage Gasket Jets Replace 8M0045397**Generic**$81.31**5.0★**▲ 79%**](https://www.amazon.com/dp/B0FN7J952L) [**New Marine 2 Barrel Carburetor For Mercruiser 3.0 Carburetor Rochester Mercruiser 3.0L 2.5L carb 4 CYL Engines Mercarb Electric Choke with Jets Gaskets Short Linkage 3310-864940A01 8M0045397 balck**condgreemee**$114.37**5.0★**▲ 73%**](https://www.amazon.com/dp/B0FCFM4CYY) [**Mercruiser 3.0 Carburetor Black Marine Carb 2 Barrel for Mercruiser Carburetor 3.0L 2.5 4CYL Engine 3310-864940A01 3310-8M0045397 Mercarb w/Electric Choke & Short Long Linkage Gasket Kit**liriuda**$114.56**4.5★**▲ 10%**](https://www.amazon.com/dp/B0F3WY6VTZ) [**Marine Carburetor for Mercruiser 3.0 Carburetor 2 Barrel Carb for Mercury Mercarb 3.0L 2.5L 4CYL Engine with Jets and W/Electric choke Long Linkage Gasket 3310-864940A01 8M0045397**FQRANBO**$88.79**3.9★**— 7%**](https://www.amazon.com/dp/B0FKFW92PT)
**~~View all trending →~~**
## **What buyers say about mercruiser 3.0 carburetor**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Value For Money**36%
*“Not bad for the price”*
**Quality-Overall**15%
*“Great build quality”*
**Size-Overall**6%
*“fits my 3.0 mercruiser engine perfectly”*
**Efficiency**6%
*“works fine, reused my jets”*
**Rusts/Corrodes**6%
*“It has a nice corrosion preventing finish which is a big plus when it is used near saltwater”*
**Assembly/Installation**4%
*“all I had to do was fine adjust after install”*
**Ease Of Use**4%
*“its very easy”*
**Functionality-Overall**3%
*“It works”*
**Advertised Vs Actual Product**3%
*“As described and came next day”*
**Fuel Efficiency**2%
*“Worked 100% great carb”*
### **What buyers complain about **
**Quality-Overall**31%
*“Parts seemed low quality”*
**Size-Overall**17%
*“The snap rings are the wrong size”*
**Defective Material/Parts**10%
*“Parts seemed low quality”*
**Functionality-Overall**10%
*“Did not work at all”*
**Durability**8%
*“It worked good for a month or so”*
**Maintenance And Repair**8%
*“Had to fully rebuild due to gaskets not installed properly”*
**Mounting**3%
*“The hole was off center the spring would not work correctly”*
**Jamming/Clogging**2%
*“can jam up on the actuator shaft”*
**Leak-Proof**2%
*“Always flooded and smelt like gas before I had a mechanic fix the carburetor”*
**Ease Of Use**2%
*“This kit makes a simple job way harder than it should be”*
### **Top return reasons **
**Size-Overall**25%
**Compatibility-Overall**14%
**Functionality-Overall**14%
**Defective Material/Parts**12%
**Leak-Proof**8%
**Mechanism Issues**5%
**Advertised Vs Actual Product**4%
**Quality-Overall**3%
**Fuel Efficiency**2%
**Assembly/Installation**2%
## **Common questions**
- **Is mercruiser 3.0 carburetor profitable to sell on Amazon United States?**
- The niche generates $80K/yr across 17 tracked products. 1 of 3 products launched in the last 360 days are still selling. 90-day search growth is +218.3%. Flapen's verdict: Worth a look (51/100).
- **How competitive is the mercruiser 3.0 carburetor niche?**
- 11 brands and 14 sellers compete. The top 5 products take 68% of clicks and top 5 brands hold 88% of demand.
- **What do buyers complain about in mercruiser 3.0 carburetor?**
- Top complaints mined from reviews: Quality-Overall, Size-Overall, Defective Material/Parts. The return rate is 6.0% — above our launch gate.
- **When does demand for mercruiser 3.0 carburetor peak?**
- Demand peaks in May–Jun–Jul–Aug; the busiest month runs 12.5× the quietest.
- **What does it cost to enter the mercruiser 3.0 carburetor niche?**
- Listings span $16.93–$114.56; the average listing price is $97.92 (sweet spot $15–$100). The average incumbent carries 61 reviews — the moat a new listing must climb.
## **Related niches in Automotive**
- 72 [**brake bleeder kit**](https://flapen.com/research/us/automotive/brake-bleeder-kit)$2.2M/yr+8.2%**Launch it**- 72 [**gas can pump**](https://flapen.com/research/us/automotive/gas-can-pump)$1.7M/yr+20.1%**Launch it**- 72 [**dewalt hedge trimmer**](https://flapen.com/research/us/automotive/dewalt-hedge-trimmer)$1.6M/yr+158.2%**Launch it**- 72 [**iron eraser**](https://flapen.com/research/us/automotive/iron-eraser)$107K/yr>1,000%**Worth a look**- 72 [**marine fuel line**](https://flapen.com/research/us/automotive/marine-fuel-line)$198K/yr+104.3%**Worth a look**- 72 [**garden hose filter**](https://flapen.com/research/us/automotive/garden-hose-filter)$729K/yr+110.7%**Worth a look**[**All Automotive niches **](https://flapen.com/research/us/automotive)