Is 3157a bulb profitable to sell on Amazon United States?

The niche generates $191K/yr across 17 tracked products. 1 of 3 products launched in the last 360 days are still selling. 90-day search growth is -13.1%. Flapen's verdict: Skip it (37/100).

How competitive is the 3157a bulb niche?

9 brands and 39 sellers compete. The top 5 products take 71% of clicks and top 5 brands hold 91% of demand.

What do buyers complain about in 3157a bulb?

Top complaints mined from reviews: Compatibility-Overall, Durability, Color. The return rate is 4.3%.

When does demand for 3157a bulb peak?

Demand is steady year-round — the busiest month runs 1.9× the quietest.

What does it cost to enter the 3157a bulb niche?

Listings span $7.18–$22.59; the average listing price is $12.42 (sweet spot $15–$100). The average incumbent carries 8,171 reviews — the moat a new listing must climb.

3157a bulb

Skip it

Soft demand (-13.1% this quarter) — this niche doesn't clear our bar today.

Conversion

Incredible13.3%

search→purchase rate — share of searches ending in a sale

Avg price

Good$12.42

avg listing price — sweet spot $15–$100

Price range

Okay$7.18–$22.59

cheapest to priciest tracked listing — scored on the share inside $15–$100

Market size

Okay$191K

$191K/yr · 116K searches

Returns

Okay4.3%

return rate — above 5% kills the launch gate

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Competition

Bad71%

top-5 click share — a locked-up shelf

Review moat

Bad8,170.88

avg incumbent reviews — the moat a new listing must climb

Brand share

Bad91%

top-5 brand share — brand-locked demand

Growth

Bad-13.1%

90-day search growth — must beat 0% to launch

According to Flapen's Amazon United States niche tracking, 3157a bulb is a $191K/yr Amazon United States market (116K searches/yr). The top 5 brands hold 91% of demand. Verdict: Skip it — 37/100.

Data updated Jul 9, 2026 · scored weekly · How we score niches

3157a bulb market data

Units sold / yr: 15K–20K; avg 500–750/product
Revenue / yr: $186K–$248K; units × avg price
Conversion rate: 13.3%
Avg BSR: #128
Page quality: 0%
Prime: 100%
Sponsored: 76%
Out of stock: 0.3%
Avg brand age: 42 months
Avg seller age: 177 days

Competition & brand share

The top 5 products capture 71% of clicks — a locked-up shelf that new listings rarely crack.

Brands

9 rising

Sellers

Top-5 brand share

91%

Top 20: 100%

Top-5 click share

71%

Top 20: 100%

Open market

SYLVANIA41%
Kadiby35%
iBrightstar6%
SEALIGHT5%
ALKOREY3%
dawfall3%
Open — no brand owns it (3 brands, 5%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -13.1% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.9×

Open Trend

Top 3157a bulb search terms

3157a19K/yr +0.7%10.0% conv.
3157na10K/yr +16.1%13.1% conv.
4157na bulb11K/yr -3.9%13.5% conv.
3157na bulb13K/yr -28.0%12.4% conv.
3157 amber bulb13K/yr -31.7%11.3% conv.
3157 turn signal bulb9K/yr +3.4%5.8% conv.
3157a bulb13K/yr -11.7%9.4% conv.
3157a turn signal bulb11K/yr -27.1%9.9% conv.
3157 bulb amber7K/yr -30.9%13.0% conv.
3157 amber6K/yr -22.6%8.3% conv.

All search terms

Top 3157a bulb 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.

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

SYLVANIA - 4157NA Long Life Miniature - Amber Bulb Ideal for Parking Side Marker and Turn Signal Applications (Contains 2 Bulbs)

SYLVANIA$7.304.7★2,258 rev

Kadiby 3157NA Bulb 4157NA Bulbs 12v 27/7w Parking/Turn Signal/Daytime Running Lamp(DRL) Amber Car Light Bulbs Auto Signal Bulb Fit for F150 F250-F350 Fiesta Expedition Grand Cherokee (2 Pack)

Kadiby$7.204.6★153 rev

Kadiby 12 Pack 3157NA 3157A 3157 Amber Bulb Parking/Side Maker/Turn Signal Auto Light Bulbs 3057A 4157NA 4057NA 12v 27/7w

Kadiby$10.014.6★1,210 rev

iBrightstar 3157 LED Bulb Amber 3157a LED Turn Signal Bulbs Super Bright for vehicle Blinker Lights and Turn Signal Lights 2 Pack

iBrightstar$15.654.4★69,021 rev

SYLVANIA - 3157NA Long Life Mini Bulb - Amber Automotive Light Bulb - Car Signal Light Bulb Ideal for Parking Side Marker & Turn Signal Applications - 2 Bulbs

SYLVANIA$7.344.7★5,268 rev

Newest

by launch date

ALKOREY 3157 Amber Light Miniature Bulb Mini Bulb Amber Natural Glass 2100K Taillight Turn Signal Light 12V 21/5W 2 Pack

ALKOREY$7.2931 rev

8mo ago

SEALIGHT Turn Signal Light Bulbs 3157 LED Bulb Amber 700% Brighter 3157A 3156 3057 4157 LED Bulb 57-SMD LED Chipset with Projector Len & Load Resistor for Turn Signal Light Parking Light 2Pcs

SEALIGHT$18.046,881 rev

9mo ago

IWIWE 3157A 3757A (Amber) Auto Light Bulb 10 Pack Compatible with 3047/3057/3157LL/3157K/3457/3757/4057/4157 for Cars/Trucks/SUVs (Brake/Tail/Side Marker/Turn Signal Lights)

IWIWE$8.9036 rev

11mo ago

Kadiby (20Pack 3157NA 3157A 3457NA Bulb Parking/Turn Signal/Daytime Running Light Bulbs 3047A 3057a 4114a 3457a 4157a 4057a 12v 27/7w Fit for E350 Expedition Focus Ram Pickup Silverado Grand Cherokee

Kadiby$13.9319 rev

1y ago

Kadiby 3157NA Bulb 4157NA Bulbs 12v 27/7w Parking/Turn Signal/Daytime Running Lamp(DRL) Amber Car Light Bulbs Auto Signal Bulb Fit for F150 F250-F350 Fiesta Expedition Grand Cherokee (2 Pack)

Kadiby$7.20153 rev

1y ago

What buyers say about 3157a bulb

What buyers praise and complain about, mined from review topics.

What buyers love

Brightness/Shine/Glow31%

“Nice and bright”

Size-Overall13%

“fit like OEM”

Quality-Overall10%

“Excellent product”

Advertised Vs Actual Product10%

“Works as it should”

Value For Money8%

“worth the every penny”

Assembly/Installation7%

“Awsome lights, ez install”

Efficiency5%

“It performs well in everyday driving conditions”

Ease Of Use3%

“Easy”

Color2%

“Play color is very bright”

Durability1%

“Durability so far has been impressive”

What buyers complain about

Compatibility-Overall16%

“Not compatible”

Durability14%

“Short life”

Color11%

“Not the right color”

Size-Overall10%

“Did not fit my car”

Functionality-Overall7%

“They didnt work”

Brightness/Shine/Glow6%

“Theyre nowhere near as bright as LEDs”

Quality-Overall4%

“Cheap”

Advertised Vs Actual Product4%

“False Advertisement; Not Compatible”

Heating2%

“The resistor is pointless at 60 W gets very hot”

Value For Money2%

“Dont buy not worth it”

Top return reasons

Size-Overall40%

Compatibility-Overall23%

Functionality-Overall8%

Advertised Vs Actual Product7%

Defective Material/Parts4%

Assembly/Installation4%

Color4%

Socket/Port/Plug3%

Brightness/Shine/Glow2%

Value For Money1%

Common questions

Is 3157a bulb profitable to sell on Amazon United States?: The niche generates $191K/yr across 17 tracked products. 1 of 3 products launched in the last 360 days are still selling. 90-day search growth is -13.1%. Flapen's verdict: Skip it (37/100).
How competitive is the 3157a bulb niche?: 9 brands and 39 sellers compete. The top 5 products take 71% of clicks and top 5 brands hold 91% of demand.
What do buyers complain about in 3157a bulb?: Top complaints mined from reviews: Compatibility-Overall, Durability, Color. The return rate is 4.3%.
When does demand for 3157a bulb peak?: Demand is steady year-round — the busiest month runs 1.9× the quietest.
What does it cost to enter the 3157a bulb niche?: Listings span $7.18–$22.59; the average listing price is $12.42 (sweet spot $15–$100). The average incumbent carries 8,171 reviews — the moat a new listing must climb.