Marine Alternator
FailThe top 5 brands take 100% of clicks, so Marine Alternator is a Fail.
- Flapen Score
- 38 / 100Ranks 6,359 of 7,287 Automotive niches · −11 vs the category median of 4938
- Market size
- $11K/yr8K searches / yr
- 90-day growth
- +108.2%search demand this quarter
- Competition
- 67%top-5 click share · 6 brands · 30 sellers
Flapen Score
Marine Alternator against its category
The dotted line is the Automotive average. Past it, Marine Alternator is stronger. Inside it, weaker.
Market
The Marine Alternator market on Amazon at a glance
Shoppers on Amazon United States searched for Marine Alternator 8K times last year and spent an estimated $11K. The top 5 brands take 100% of clicks. Demand peaks in Jun–Jul–Aug–Sep. Flapen scores it 38 out of 100, a Fail.
01 · Demand
An estimated 1.1% of those searches ended in a purchase.
Shoppers searched for this 8K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 1.1% of those searches ended in a purchase. Searches in the last 90 days moved +108.2% against the 90 days before. Searches, conversion and average price together put the market at an estimated $11K a year.
- Searches, last 12 months
- 8K
- Growth, 90 days vs prior 90
- +108.2%
- Conversion, latest week
- 1.1%
- Market size, estimated
- $11Ka year
- Peak month
- July5.4× the quietest month
- Top search term
- mercruiser alternator4K searches a year
02 · Price
A sale here is worth $127.40.
Listings sell for $127.40 on average, from $81.33 to $370.67. Amazon reports units sold in ranges. This niche sold 100 to 250 a year. The average listing sells 0 to 100 of them. At $127.40 that is $0 to $13K a year per listing.
- Average price
- $127.40above the $15 to $100 sweet spot
- Price range
- $81.33–$370.67
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 100–250
- Units per listing a year
- 0–100
- Revenue per listing a year
- $0–$13K
- Returns
- 8.2%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is low.
75% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #936 within Starters & Alternators. It carries 89 reviews at 4.30 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 75%
- Prime listings
- 100%
- Out of stock, average day
- 0.0%
- Average rank
- #936in Starters & Alternators
- Average rating
- 4.30 starsAmazon United States average 4.42 stars
- Average reviews
- 89per listing
- Listings tracked
- 16
04 · Newcomers
1 of last year's 2 launches cleared the first-year sales bar.
2 products launched here in the last 12 months. 1 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 83 months on average, so the names here are established.
- Launched, last 12 months
- 2
- Successful launches
- 1Amazon's first-year sales bar
- Average brand age
- 83 months
Products
Top Marine Alternator products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 11, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Mercruiser Alternator Replacement New for Black Scorpion 4.3 5.0 5.7 6.2 8.1 MX Inboard Ski 500 525 EFI 600 662 700 SCI 350 492 496 Mag HO GM V8 863077-1 219290 19020611 400-12299 ADR0316 8461N
- Price
- $91.18
- Rating
- 4.4/5
- Reviews
- 34
- Age
- 2y ago

Mercruiser Penta Alternator Replacement New for 2.5 3.0 4.1 4.3 5.0 5.7 5.8 7.4 8.2 8.9 9.4 OMC Mando Pleasurecraft 1970-2001 12174N1G A000B0331 AC155603 3854809-5 3850927-9 400-46022 3860769
- Price
- $104.24
- Rating
- 4.3/5
- Reviews
- 67
- Age
- 2y ago

OEG Parts New Alternator SAEJ1171 Compatible With Mercruiser PCM Pleasurecraft OMC Inboard Compatible With OEM Mando & Motorola A000B0331 AC155603 AC155604 AC155614
- Price
- $95.99
- Rating
- 4.1/5
- Reviews
- 211
- Age
- 11y ago

OEG Parts New Alternator Compatible With 1968-1987 Mercruiser & 1981-1987 OMC Pleasurecraft 100 AMP 1 Wire 56045 59755 983424 983836 18-5950 18-5951 1100732 1100576
- Price
- $111.88
- Rating
- 4.3/5
- Reviews
- 109
- Age
- 11y ago

DB Electrical 400-46022 Alternator Compatible With/Replacement for MerCruiser Models and Certain Marine-Specific Motors High-Output MerCruiser Alternator Direct-Fit OEM MerCruiser Parts
- Price
- $98.90
- Rating
- 4.6/5
- Reviews
- 341
- Age
- 14y ago
Trending
estimated 90-day click momentum
Marine Alternator for 1998-2023 Mercruiser 4.3L 5.0L 5.7L & JLG Boom Lifts 12V 65A Fixes Battery Drain & Equipment Shutdown Corrosion-Resistant Replaces 8460N 70003385 400-12151 862031
- Price
- $109.28
- Rating
- 4.0/5
- Reviews
- 1
- Age
- 3mo ago

SCITOO Alternator Fits for Mercruiser for Model Mx 6.2L Mpi for Model 8.2L Mie Mpi for Model 7.4Lx Mpi for Model 502 Mag Mpi for Model 5.7L Ski- 12V 70Amp CW S6 Pulley Class 8460
- Price
- $81.33
- Rating
- 3.7/5
- Reviews
- 40
- Age
- 2y ago

OEG Parts New Alternator Compatible With Mercruiser Black Scorpion 5.7 6.2 MX Inboard Ski 1998-2002; 350 Mag MPI (Gen+) V8 5.7L 1999-06 219290 863077-1 863077T 19020611 19020612 20115018TBA
- Price
- $99.79
- Rating
- 4.2/5
- Reviews
- 108
- Age
- 11y ago

OEG Parts New Alternator SAEJ1171 Compatible With Mercruiser PCM Pleasurecraft OMC Inboard Compatible With OEM Mando & Motorola A000B0331 AC155603 AC155604 AC155614
- Price
- $95.99
- Rating
- 4.1/5
- Reviews
- 211
- Age
- 11y ago

Quicksilver 863077T 65 Amp Alternator Delco Serpentine Belt for Select MerCruiser Sterndrive and Inboard Engines
- Price
- $370.67
- Rating
- 4.6/5
- Reviews
- 24
- Age
- 17y ago
Newest
by launch date
Marine Alternator for 1998-2023 Mercruiser 4.3L 5.0L 5.7L & JLG Boom Lifts 12V 65A Fixes Battery Drain & Equipment Shutdown Corrosion-Resistant Replaces 8460N 70003385 400-12151 862031
- Price
- $109.28
- Rating
- 4.0/5
- Reviews
- 1
- Age
- 3mo ago

New Mercruiser Penta Alternator Replacement New for 1970-2001 OMC Mando Pleasurecraft 2.5 3.0 4.1 4.3 5.0 5.7 5.8 7.4 8.2 8.9 9.4 12174N1G A000B0331 AC155603 3854809-5 3850927-9 400-46022 3860769
- Price
- $110.43
- Rating
- 4.0/5
- Reviews
- 10
- Age
- 12mo ago

Mercruiser Alternator Replacement New for Black Scorpion 4.3 5.0 5.7 6.2 8.1 MX Inboard Ski 500 525 EFI 600 662 700 SCI 350 492 496 Mag HO GM V8 863077-1 219290 19020611 400-12299 ADR0316 8461N
- Price
- $91.18
- Rating
- 4.4/5
- Reviews
- 34
- Age
- 2y ago

Mercruiser Penta Alternator Replacement New for 2.5 3.0 4.1 4.3 5.0 5.7 5.8 7.4 8.2 8.9 9.4 OMC Mando Pleasurecraft 1970-2001 12174N1G A000B0331 AC155603 3854809-5 3850927-9 400-46022 3860769
- Price
- $104.24
- Rating
- 4.3/5
- Reviews
- 67
- Age
- 2y ago

SCITOO Alternator Fits for Mercruiser for Model Mx 6.2L Mpi for Model 8.2L Mie Mpi for Model 7.4Lx Mpi for Model 502 Mag Mpi for Model 5.7L Ski- 12V 70Amp CW S6 Pulley Class 8460
- Price
- $81.33
- Rating
- 3.7/5
- Reviews
- 40
- Age
- 2y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 67% of clicks. Leaders hold, but buyers still shop past them.
Brands
6 falling
Sellers
30
Est. top-5 brand share
100%
Top 20: 100%
Est. top-5 click share
67%
Top 20: 100%
Open market
0%
- Parts Player31%
- DB Electrical26%
- BDELI24%
- DynaVim Parts16%
- Quicksilver1%
- SCITOO1%
Demand
Marine Alternator search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Jun, Jul, Aug, Sep · busiest ÷ quietest = 5.4×
Reviews and returns
What reviews say buyers love and hate about Marine Alternator
We read the reviews and the return reasons for every product selling here.
“Junk”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
20 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Marine Alternator questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









