Master Cylinder
MaybeThe average product has only 153 reviews. But the top 5 brands take 93% of clicks, so Master Cylinder is a Maybe.
- Flapen Score
- 51 / 100Top 39% of 7,287 Automotive niches · +2 vs the category median of 4951
- Market size
- $805K/yr697K searches / yr
- 90-day growth
- +2.1%search demand this quarter
- Competition
- 46%top-5 click share · 10 brands · 70 sellers
Flapen Score
Master Cylinder against its category
The dotted line is the Automotive average. Past it, Master Cylinder is stronger. Inside it, weaker.
Market
The Master Cylinder market on Amazon at a glance
Shoppers on Amazon United States searched for Master Cylinder 697K times last year and spent an estimated $805K. The top 5 brands take 93% of clicks. Flapen scores it 51 out of 100, a Maybe.
01 · Demand
An estimated 2.2% of those searches ended in a purchase.
Shoppers searched for this 697K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 2.2% of those searches ended in a purchase. Searches in the last 90 days moved +2.1% against the 90 days before. Searches, conversion and average price together put the market at an estimated $805K a year.
- Searches, last 12 months
- 697K
- Growth, 90 days vs prior 90
- +2.1%
- Conversion, latest week
- 2.2%
- Market size, estimated
- $805Ka year
- Peak month
- October1.3× the quietest month
- Top search term
- master cylinder329K searches a year
02 · Price
A sale here is worth $53.48.
Listings sell for $53.48 on average, from $12.23 to $136.28. Amazon reports units sold in ranges. This niche sold 15K to 20K a year. The average listing sells 250 to 500 of them. At $53.48 that is $13K to $27K a year per listing.
- Average price
- $53.48inside the $15 to $100 sweet spot
- Price range
- $12.23–$136.28
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 15K–20K
- Units per listing a year
- 250–500
- Revenue per listing a year
- $13K–$27K
- Returns
- 7.4%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is ads.
91% 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 #425 within Brake System. It carries 153 reviews at 4.30 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 91%
- Prime listings
- 100%
- Out of stock, average day
- 0.0%
- Average rank
- #425in Brake System
- Average rating
- 4.30 starsAmazon United States average 4.42 stars
- Average reviews
- 153per listing
- Listings tracked
- 46
04 · Newcomers
0 of last year's 2 launches cleared the first-year sales bar.
2 products launched here in the last 12 months. 0 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 52 months on average, so the names here are settling in.
- Launched, last 12 months
- 2
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 52 months
Products
Top Master Cylinder 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
Dorman M390259 Brake Master Cylinder Compatible with Select Models
- Price
- $36.20
- Rating
- 4.5/5
- Reviews
- 1,474
- Age
- 18y ago

Dorman M630031 Brake Master Cylinder Compatible with Select Cadillac/Chevrolet/GMC Models
- Price
- $65.12
- Rating
- 4.6/5
- Reviews
- 1,058
- Age
- 17y ago

Dorman M76162 Brake Master Cylinder Compatible with Select Models
- Price
- $33.00
- Rating
- 4.6/5
- Reviews
- 351
- Age
- 18y ago

Dorman M39634 Brake Master Cylinder Compatible with Select Ford Models
- Price
- $38.49
- Rating
- 4.5/5
- Reviews
- 508
- Age
- 18y ago

Dorman M39646 Brake Master Cylinder Compatible with Select Chevrolet/Dodge/GMC Models
- Price
- $34.40
- Rating
- 4.5/5
- Reviews
- 348
- Age
- 18y ago
Trending
estimated 90-day click momentum
BESULEN Motorcycle Brake Pump 7/8 22mm Aluminum Alloy Handlebar Right Hand Brake Master Cylinder Lever Motorbike Replacement Accessories Universal for Motorbike Scooter
- Price
- $12.23
- Rating
- 3.3/5
- Reviews
- 8
- Age
- 11mo ago

PHILTOP M630334 Brake Master Cylinder Assembly Replacement for Chevrolet Silverado 1500/GMC Sierra 1500 2003-2005 2007 Silverado 2500 HD 2003-2006/GMC Sierra 2500 HD Chevrolet Express 3500 2003-2007
- Price
- $47.09
- Rating
- 3.7/5
- Reviews
- 19
- Age
- 1y ago

A-Premium Brake Master Cylinder with Reservoir and Cap Compatible with Ford and Lincoln Vehicles - For F-150 2004-2008 Mark LT 2006-2008 -Replaces 4L3Z-2140-AB 4L3Z-2140-AB 6L3Z-2140-A 7L3Z 2140-A
- Price
- $58.80
- Rating
- 4.7/5
- Reviews
- 100
- Age
- 4y ago

Dorman M630031 Brake Master Cylinder Compatible with Select Cadillac/Chevrolet/GMC Models
- Price
- $65.12
- Rating
- 4.6/5
- Reviews
- 1,058
- Age
- 17y ago

Dorman M76162 Brake Master Cylinder Compatible with Select Models
- Price
- $33.00
- Rating
- 4.6/5
- Reviews
- 351
- Age
- 18y ago
Newest
by launch date
BESULEN Motorcycle Brake Pump 7/8 22mm Aluminum Alloy Handlebar Right Hand Brake Master Cylinder Lever Motorbike Replacement Accessories Universal for Motorbike Scooter
- Price
- $12.23
- Rating
- 3.3/5
- Reviews
- 8
- Age
- 11mo ago

PHILTOP M630334 Brake Master Cylinder Assembly Replacement for Chevrolet Silverado 1500/GMC Sierra 1500 2003-2005 2007 Silverado 2500 HD 2003-2006/GMC Sierra 2500 HD Chevrolet Express 3500 2003-2007
- Price
- $47.09
- Rating
- 3.7/5
- Reviews
- 19
- Age
- 1y ago

A-Premium Brake Master Cylinder Compatible with Chevy Cadillac Dodge and GMC Vehicles - Ram 1500 Escalade C1500 C2500 K1500 K2500 Tahoe Yukon
- Price
- $41.75
- Rating
- 4.3/5
- Reviews
- 43
- Age
- 1y ago

PRO+ Brake Master Cylinder PN4074 - OE Compatible with Select 2003-2007 Cadillac/Chevrolet/GMC (Escalade Escalade ESV Escalade EXT Avalanche 1500 Express 1500 Express 2500 Silverado 1500 & More)
- Price
- $63.54
- Rating
- 4.0/5
- Reviews
- 21
- Age
- 2y ago

A-Premium Brake Master Cylinder Compatible with Cadillac Chevy and GMC Vehicles - Silverado 1500 Suburban Sierra Yukon Yukon XL Escalade Tahoe - 1999-2002 - Replace# 18060789 18040252
- Price
- $49.72
- Rating
- 4.6/5
- Reviews
- 83
- Age
- 2y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 46% of clicks. Leaders hold, but buyers still shop past them.
Brands
10 rising
Sellers
70
Est. top-5 brand share
93%
Top 20: 100%
Est. top-5 click share
46%
Top 20: 74%
Open market
5%
- Dorman64%
- A-Premium22%
- Quality-Built3%
- NewYall3%
- Beck/Arnley2%
- PHILTOP2%
- Open — no brand owns it (4 brands, 5%)
Demand
Master Cylinder search demand
Weekly searches over the year, seasonality beneath. Pick a range.
No pronounced peak months · busiest ÷ quietest = 1.3×
Search terms
Top Master Cylinder search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- master cylinder329K/yr
- brake master cylinder196K/yr
- master brake cylinder27K/yr
- brake fluid reservoir21K/yr
- cilindro maestro de frenos16K/yr
- brake reservoir14K/yr
- master cylinder rebuild kit11K/yr
- break master cylinder10K/yr
- automotive replacement brake hydraulic parts8K/yr
- master cylinder reservoir8K/yr
Reviews and returns
What reviews say buyers love and hate about Master Cylinder
We read the reviews and the return reasons for every product selling here.
“Leaked right out of the box”
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.
17 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 Master Cylinder 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









