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921 Bulb

Fail

The average product has 4,840 reviews to catch up to, so 921 Bulb is a Fail.

Flapen Score
43
43 / 100
Ranks 5,360 of 7,287 Automotive niches · −6 vs the category median of 49
Market size
$147K/yr107K searches / yr
90-day growth
+11.2%search demand this quarter
Competition
60%top-5 click share · 16 brands · 56 sellers

Flapen Score

921 Bulb against its category

The dotted line is the Automotive average. Past it, 921 Bulb is stronger. Inside it, weaker.

43Fail
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The 921 Bulb market on Amazon at a glance

Shoppers on Amazon United States searched for 921 Bulb 107K times last year and spent an estimated $147K. The top 5 brands take 83% of clicks. Flapen scores it 43 out of 100, a Fail.

01 · Demand

An estimated 12.8% of those searches ended in a purchase.

Shoppers searched for this 107K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 12.8% of those searches ended in a purchase. Searches in the last 90 days moved +11.2% against the 90 days before. Searches, conversion and average price together put the market at an estimated $147K a year.

Searches, last 12 months
107K
Growth, 90 days vs prior 90
+11.2%
Conversion, latest week
12.8%
Market size, estimated
$147Ka year
Peak month
May1.4× the quietest month
Top search term
921 bulb67K searches a year

02 · Price

A sale here is worth $10.82.

Listings sell for $10.82 on average, from $3.67 to $25.07. Amazon reports units sold in ranges. This niche sold 13K to 15K a year. The average listing sells 1,000 to 1,250 of them. At $10.82 that is $11K to $14K a year per listing.

Average price
$10.82under the $15 to $100 sweet spot
Price range
$3.67–$25.07
Amazon United States median price
$24.38across 115,062 niches
Units sold a year
13K–15K
Units per listing a year
1,000–1,250
Revenue per listing a year
$11K–$14K
Returns
3.1%of orders · Amazon United States median 2.1%

03 · Entry bar

The bar here is reviews.

88% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 1.7% of listings are out of stock. The average listing ranks #50 within Lights, Bulbs & Indicators. It carries 4,840 reviews at 4.58 stars, so a new listing needs social proof before a better product.

Sponsored listings
88%
Prime listings
100%
Out of stock, average day
1.7%
Average rank
#50in Lights, Bulbs & Indicators
Average rating
4.58 starsAmazon United States average 4.42 stars
Average reviews
4,840per listing
Listings tracked
25

04 · Newcomers

1 of last year's 5 launches cleared the first-year sales bar.

5 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 50 months on average, so the names here are settling in.

Launched, last 12 months
5
Successful launches
1Amazon's first-year sales bar
Average brand age
50 months

Products

Top 921 Bulb products & what they sell for

Every tracked product: its share of the shelf, its reviews, and its price.

Sign in to see the products

The products selling in this niche are for signed-in readers. Every market figure above stays open to everyone.

Competition

Competition: brands, sellers & click share

The top 5 products take 60% of clicks. Leaders hold, but buyers still shop past them.

Brands

16 rising

Sellers

56

Top-5 brand share

83%

Top 20: 100%

Top-5 click share

60%

Top 20: 95%

Open market

15%

  • Brand 150%
  • Brand 212%
  • Brand 310%
  • Brand 47%
  • Brand 53%
  • Brand 62%
  • Open — no brand owns it (10 brands, 15%)

Demand

921 Bulb search demand

Weekly searches over the year, seasonality beneath. Pick a range.

3K2KSpike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.4×

Search terms

Top 921 Bulb search terms shoppers use

The exact words shoppers type, with yearly volume, growth, and conversion.

  • 921 bulb67K/yr
  • 921 brake light bulb7K/yr
  • 921 light bulb7K/yr
  • sylvania 921 bulb8K/yr
  • sylvania 9216K/yr
  • 921 bulbs6K/yr
  • bulb 9213K/yr
  • 921ll bulb3K/yr

Reviews and returns

What reviews say buyers love and hate about 921 Bulb

We read the reviews and the return reasons for every product selling here.

48%of positive reviews mention “Brightness/Shine/Glow”
27%of negative reviews mention “Durability”
3.1%of orders come back
“not long lasting”
A buyer, on “Durability”27% of negative reviews mention the same topic

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.

16 topics

NegativePositive

FAQ

Common 921 Bulb questions

Answered from the same tracked data.