---
title: "3157a Bulb — $191K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/3157a-bulb"
last_updated: "2026-08-09T09:34:56.017Z"
locale: en
meta:
description: "Niche score 37/100 · $191K/yr market · 116K searches/yr · $12.42 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 37/100 · $191K/yr market · 116K searches/yr · $12.42 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "3157a Bulb — $191K/yr Amazon US Niche (2026) - Flapen"
---
# **3157a bulb**
**Skip it**
Soft demand (-13.1% this quarter) — this niche doesn't clear our bar today.
Market size 38Growth 18Conversion 96Competition 24Returns 34Price range 49Avg price 54Brand share 22Review moat 23Quality gap 32
**Conversion**
**Incredible****13.3%**
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**
**Okay****4.3%**
return rate — above 5% kills the launch gate
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Competition**
**Bad****71%**
top-5 click share — a locked-up shelf
**Review moat**
**Bad****8,170.88**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Bad****91%**
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 ~~](https://flapen.com/research/methodology)
## **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**
**39**
**Top-5 brand share**
**91%**
Top 20: 100%
**Top-5 click share**
**71%**
Top 20: 100%
**Open market**
**5%**
- 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.
3K2KSpike '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.9×
[**Open Trend **](https://flapen.com/research/us/automotive/3157a-bulb/trend)
## **Top 3157a bulb search terms**
- **3157a**19K/yr+0.7%10.0% conv. - **3157na**10K/yr+16.1%13.1% conv. - **4157na bulb**11K/yr-3.9%13.5% conv. - **3157na bulb**13K/yr-28.0%12.4% conv. - **3157 amber bulb**13K/yr-31.7%11.3% conv. - **3157 turn signal bulb**9K/yr+3.4%5.8% conv. - **3157a bulb**13K/yr-11.7%9.4% conv. - **3157a turn signal bulb**11K/yr-27.1%9.9% conv. - **3157 bulb amber**7K/yr-30.9%13.0% conv. - **3157 amber**6K/yr-22.6%8.3% conv. [**All search terms **](https://flapen.com/research/us/automotive/3157a-bulb/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.
0%10%$19K20%$38K30%$57K40%$77K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
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
[1**SYLVANIA - 4157NA Long Life Miniature - Amber Bulb Ideal for Parking Side Marker and Turn Signal Applications (Contains 2 Bulbs)**SYLVANIA**$7.30**4.7★2,258 rev](https://www.amazon.com/dp/B01FWODQ1S) [2**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**$7.20**4.6★153 rev](https://www.amazon.com/dp/B0F3WZTK1G) [3**Kadiby 12 Pack 3157NA 3157A 3157 Amber Bulb Parking/Side Maker/Turn Signal Auto Light Bulbs 3057A 4157NA 4057NA 12v 27/7w**Kadiby**$10.01**4.6★1,210 rev](https://www.amazon.com/dp/B0CR6586VS) [4**iBrightstar 3157 LED Bulb Amber 3157a LED Turn Signal Bulbs Super Bright for vehicle Blinker Lights and Turn Signal Lights 2 Pack**iBrightstar**$15.65**4.4★69,021 rev](https://www.amazon.com/dp/B06WD7Z4R7) [5**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**$7.34**4.7★5,268 rev](https://www.amazon.com/dp/B000COCUF2)
**~~View all top sellers →~~**
### **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**$7.29**31 rev8mo ago](https://www.amazon.com/dp/B0FZ7WGF8W) [**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**$18.04**6,881 rev9mo ago](https://www.amazon.com/dp/B0FP4ZVY6Z) [**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**$8.90**36 rev11mo ago](https://www.amazon.com/dp/B0FKBGLBWD) [**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**$13.93**19 rev1y ago](https://www.amazon.com/dp/B0F6YQ1BZW) [**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**$7.20**153 rev1y ago](https://www.amazon.com/dp/B0F3WZTK1G)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Kadiby 2 Pack 3157 4157 Bulb Brake/Tail/Turn Signal Light/DRL(Daytime Running Lights) 3157ll 12V P27/7W 3047 3057 4057 4114 Trailer Bulbs Fit for F150 Focus Altima Silverado Jeep Cherokee**Kadiby**$7.18**4.7★**▲ 99%**](https://www.amazon.com/dp/B0F3WXWRFV) [**ALKOREY 3157 Amber Light Miniature Bulb Mini Bulb Amber Natural Glass 2100K Taillight Turn Signal Light 12V 21/5W 2 Pack**ALKOREY**$7.29**4.4★**▲ 96%**](https://www.amazon.com/dp/B0FZ7WGF8W) [**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**$13.93**4.4★**▲ 68%**](https://www.amazon.com/dp/B0F6YQ1BZW) [**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**$7.20**4.6★**▲ 57%**](https://www.amazon.com/dp/B0F3WZTK1G) [**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**$8.90**4.5★**▲ 26%**](https://www.amazon.com/dp/B0FKBGLBWD)
**~~View all trending →~~**
## **What buyers say about 3157a bulb**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Brightness/Shine/Glow**31%
*“Nice and bright”*
**Size-Overall**13%
*“fit like OEM”*
**Quality-Overall**10%
*“Excellent product”*
**Advertised Vs Actual Product**10%
*“Works as it should”*
**Value For Money**8%
*“worth the every penny”*
**Assembly/Installation**7%
*“Awsome lights, ez install”*
**Efficiency**5%
*“It performs well in everyday driving conditions”*
**Ease Of Use**3%
*“Easy”*
**Color**2%
*“Play color is very bright”*
**Durability**1%
*“Durability so far has been impressive”*
### **What buyers complain about **
**Compatibility-Overall**16%
*“Not compatible”*
**Durability**14%
*“Short life”*
**Color**11%
*“Not the right color”*
**Size-Overall**10%
*“Did not fit my car”*
**Functionality-Overall**7%
*“They didnt work”*
**Brightness/Shine/Glow**6%
*“Theyre nowhere near as bright as LEDs”*
**Quality-Overall**4%
*“Cheap”*
**Advertised Vs Actual Product**4%
*“False Advertisement; Not Compatible”*
**Heating**2%
*“The resistor is pointless at 60 W gets very hot”*
**Value For Money**2%
*“Dont buy not worth it”*
### **Top return reasons **
**Size-Overall**40%
**Compatibility-Overall**23%
**Functionality-Overall**8%
**Advertised Vs Actual Product**7%
**Defective Material/Parts**4%
**Assembly/Installation**4%
**Color**4%
**Socket/Port/Plug**3%
**Brightness/Shine/Glow**2%
**Value For Money**1%
## **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.
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