Mercruiser 3.0 Tune Up Kit
MaybeSearch demand grew +193.1% this quarter. But the top 5 products take 77% of clicks, so Mercruiser 3.0 Tune Up Kit is a Maybe.
- Flapen Score
- 58 / 100Top 14% of 7,287 Automotive niches · +9 vs the category median of 4958
- Market size
- $198K/yr32K searches / yr
- 90-day growth
- +193.1%search demand this quarter
- Competition
- 77%top-5 click share · 9 brands · 37 sellers
Flapen Score
Mercruiser 3.0 Tune Up Kit against its category
The dotted line is the Automotive average. Past it, Mercruiser 3.0 Tune Up Kit is stronger. Inside it, weaker.
Market
The Mercruiser 3.0 Tune Up Kit market on Amazon at a glance
Shoppers on Amazon United States searched for Mercruiser 3.0 Tune Up Kit 32K times last year and spent an estimated $198K. The top 5 brands take 87% of clicks. Demand peaks in Apr–May–Jun–Jul. Flapen scores it 58 out of 100, a Maybe.
01 · Demand
An estimated 9.8% of those searches ended in a purchase.
Shoppers searched for this 32K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 9.8% of those searches ended in a purchase. Searches in the last 90 days moved +193.1% against the 90 days before. Searches, conversion and average price together put the market at an estimated $198K a year.
- Searches, last 12 months
- 32K
- Growth, 90 days vs prior 90
- +193.1%
- Conversion, latest week
- 9.8%
- Market size, estimated
- $198Ka year
- Peak month
- May8.1× the quietest month
- Top search term
- mercruiser 3.0 oil filter5K searches a year
02 · Price
A sale here is worth $63.52.
Listings sell for $63.52 on average, from $3.76 to $215.79. Amazon reports units sold in ranges. This niche sold 4K to 5K a year. The average listing sells 250 to 500 of them. At $63.52 that is $16K to $32K a year per listing.
- Average price
- $63.52inside the $15 to $100 sweet spot
- Price range
- $3.76–$215.79
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 4K–5K
- Units per listing a year
- 250–500
- Revenue per listing a year
- $16K–$32K
- Returns
- 1.2%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is low.
67% of listings pay for placement with sponsored ads. 92% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #624 within Filters. It carries 431 reviews at 4.53 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 67%
- Prime listings
- 92%
- Out of stock, average day
- 0.0%
- Average rank
- #624in Filters
- Average rating
- 4.53 starsAmazon United States average 4.42 stars
- Average reviews
- 431per listing
- Listings tracked
- 12
04 · Newcomers
Brands here are established.
The brands on the shelf have sold for 64 months on average, so the names here are established.
- Launched, last 12 months
- 0
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 64 months
Products
Top Mercruiser 3.0 Tune Up Kit 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 9, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Quicksilver 866340Q03 Sterndrive and Inboard Spin-On Oil Filter for MerCruiser and GM Marine Engines
- Price
- $9.83
- Rating
- 4.8/5
- Reviews
- 3,058
- Age
- 19y ago

Mercury 866340K01 4-Stroke Engine Oil Filter for MerCruiser Sterndrive and Inboard Engines
- Price
- $17.69
- Rating
- 4.8/5
- Reviews
- 605
- Age
- 13y ago

Tune Up Kit with NGK BPR6EFS spark plugs distributor cap rotor and spark plug Wires Mercruiser 3.0L LX Replaces 811635Q2 816761Q14
- Price
- $85.37
- Rating
- 4.4/5
- Reviews
- 109
- Age
- 7y ago

Mercruiser 3.0L / LX OEM Service Kit Alpha One Gen 2/Delco EST IGN: Fuel & Oil Filter Alpha Impeller Kit Distributor Cap/Rotor Spark Plugs & Wires Bayliner SeaRay Larson
- Price
- $215.79
- Rating
- 4.8/5
- Reviews
- 7
- Age
- 1y ago

RPS Tune Up Kit for MerCruiser & OMC 2.5L 3.0L 3.7L Engines (1963-1989) | Distributor Cap Rotor Points Condenser & Spark Plug Wires | Replaces Part 393-9459Q1 380541 18-5385
- Price
- $78.06
- Rating
- 4.4/5
- Reviews
- 407
- Age
- 8y ago
Trending
estimated 90-day click momentum
RPS Tune Up Kit for MerCruiser & OMC 2.5L 3.0L 3.7L Engines (1963-1989) | Distributor Cap Rotor Points Condenser & Spark Plug Wires | Replaces Part 393-9459Q1 380541 18-5385
- Price
- $78.06
- Rating
- 4.4/5
- Reviews
- 407
- Age
- 8y ago

ACDelco Gold MR43LTS (19355201) Marine Spark Plug
- Price
- $3.76
- Rating
- 4.7/5
- Reviews
- 415
- Age
- 18y ago

Tune UP KIT Oil Filter DELCO EST Wires Cap Rotor Spark Plugs Compatible with MERCRUISER 3.0L 3.0
- Price
- $97.25
- Rating
- 4.1/5
- Reviews
- 16
- Age
- 4y ago

Tune Up Kit with NGK BPR6EFS spark plugs distributor cap rotor and spark plug Wires Mercruiser 3.0L LX Replaces 811635Q2 816761Q14
- Price
- $85.37
- Rating
- 4.4/5
- Reviews
- 109
- Age
- 7y ago

3.0L Tune UP KIT Oil Filter Ignition Coil Wires Cap Rotor Spark Plugs Compatible with MERCRUISER 3.0
- Price
- $137.55
- Rating
- 4.2/5
- Reviews
- 29
- Age
- 4y ago
Newest
by launch date
Mercruiser 3.0L / LX OEM Service Kit Alpha One Gen 2/Delco EST IGN: Fuel & Oil Filter Alpha Impeller Kit Distributor Cap/Rotor Spark Plugs & Wires Bayliner SeaRay Larson
- Price
- $215.79
- Rating
- 4.8/5
- Reviews
- 7
- Age
- 1y ago

2 Pcs Marine Oil Filter 35-866340K01 Compatible with Mercruiser 4- & 6- Cylinder Engines GM V8 Engines Relaces Sierra 18-7824-2
- Price
- $19.35
- Rating
- 4.5/5
- Reviews
- 30
- Age
- 2y ago

Tune Up Kit Distributor Cap Rotor 4X Spark Plugs 5X Spark Plug Wires Compatible with 3.0L 4cyl Mer-Cruiser Engines Made by General Motors with Delco EST Ignition Systems #811635Q2 816761Q14
- Price
- $31.62
- Rating
- 4.5/5
- Reviews
- 15
- Age
- 2y ago

3.0L Tune UP KIT Oil Filter Ignition Coil Wires Cap Rotor Spark Plugs Compatible with MERCRUISER 3.0
- Price
- $137.55
- Rating
- 4.2/5
- Reviews
- 29
- Age
- 4y ago

Tune UP KIT Oil Filter DELCO EST Wires Cap Rotor Spark Plugs Compatible with MERCRUISER 3.0L 3.0
- Price
- $97.25
- Rating
- 4.1/5
- Reviews
- 16
- Age
- 4y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 77% of clicks. A locked shelf that new listings rarely crack.
Brands
9 falling
Sellers
37
Est. top-5 brand share
87%
Top 20: 100%
Est. top-5 click share
77%
Top 20: 100%
Open market
9%
- Quicksilver47%
- RPS13%
- MERCURY12%
- Generic8%
- Midnight Marine6%
- AIB2C4%
- Open — no brand owns it (3 brands, 9%)
Demand
Mercruiser 3.0 Tune Up Kit search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Apr, May, Jun, Jul · busiest ÷ quietest = 8.1×
Search terms
Top Mercruiser 3.0 Tune Up Kit search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- mercruiser 3.0 oil filter5K/yr
- mercruiser 3.0 tune up kit7K/yr
- 35-866340k014K/yr
- 35-866340q033K/yr
- mercruiser oil filter4K/yr
- 3.0 mercruiser tune up kit3K/yr
- mercruiser 3.0 spark plugs3K/yr
- quicksilver oil filter3K/yr
Reviews and returns
What reviews say buyers love and hate about Mercruiser 3.0 Tune Up Kit
We read the reviews and the return reasons for every product selling here.
“Rotor is absolute garbage”
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.
14 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 Mercruiser 3.0 Tune Up Kit 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









