---
title: "3157 Led Bulb with Built in Resistor — $28K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/3157-led-bulb-with-built-in-resistor"
last_updated: "2026-08-09T09:47:37.166Z"
locale: en
meta:
description: "Niche score 38/100 · $28K/yr market · 35K searches/yr · $27.27 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 38/100 · $28K/yr market · 35K searches/yr · $27.27 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "3157 Led Bulb with Built in Resistor — $28K/yr Amazon US Niche (2026) - Flapen"
---
# **3157 led bulb with built in resistor**
**Skip it**
A small market ($28K/yr) — this niche doesn't clear our bar today.
Market size 7Growth 16Conversion 38Competition 61Returns 23Price range 91Avg price 95Brand share 32Review moat 20Quality gap 57
**Avg price**
**Incredible****$27.27**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$12.84–$55.15**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Good****49%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Conversion**
**Okay****3.0%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Okay****86%**
top-5 brand share — brands hold most of the demand
**Returns**
**Bad****5.5%**
return rate — above 5% kills the launch gate
**Review moat**
**Bad****13,312.24**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-18.5%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$28K**
$28K/yr · 35K searches
**Signals**[** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%")
According to Flapen's Amazon United States niche tracking, 3157 led bulb with built in resistor is a $28K/yr Amazon United States market (35K searches/yr). The top 5 brands hold 86% of demand. Verdict: Skip it — 38/100.
Data updated Jul 9, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **3157 led bulb with built in resistor market data**
- **Units sold / yr**
- **1K–2K**
- avg 0–100/product
- **Revenue / yr**
- **$34K–$41K**
- units × avg price
- **Conversion rate**
- **3.0%**
- **Avg BSR**
- **#24**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **97%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **44 months**
- **Avg seller age**
- **168 days**
## **Competition & brand share**
The top 5 products take 49% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**11 **▼falling
**Sellers**
**21**
**Top-5 brand share**
**86%**
Top 20: 100%
**Top-5 click share**
**49%**
Top 20: 84%
**Open market**
**10%**
- AUXITO41% - SEALIGHT25% - LASFIT10% - Auxbeam5% - AUXLIGHT4% - Syneticusa4% - Open — no brand owns it (5 brands, 10%)
## **Demand & seasonality**
Weekly Amazon search volume, last 91 weeks — -18.5% search growth over the last 90 days.
900700Spike '25Spike '26 seasonNovDecJanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun
No pronounced peak months · busiest ÷ quietest = 1.7×
[**Open Trend **](https://flapen.com/research/us/automotive/3157-led-bulb-with-built-in-resistor/trend)
## **Top 3157 led bulb with built in resistor 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%5%$1K10%$3K15%$4K20%$6K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**AUXITO Latest CANBUS 3157 Switchback LED Bulbs 3057 3457 4157 Dual Color Amber/White Anti Hyper Flash Built-in Resistor Error Free Turn Signal Lights and DRL/Parking Lights Pack of 2**AUXITO**$33.49**4.5★35,933 rev](https://www.amazon.com/dp/B0CLP5Z8LN) [2**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**4.5★6,881 rev](https://www.amazon.com/dp/B0FP4ZVY6Z) [3**AUXITO CANBUS 3156 3157 LED Bulbs Red with Built-in Resistor 3056 3057 3457R 4057 4156 4157 Anti Hyper Flash Error Free Brake Lights Tail Lights Stop Lights Turn Signal Lights Pack of 2**AUXITO**$34.30**4.5★35,933 rev](https://www.amazon.com/dp/B0DJVGJZTG) [4**AUXITO CANBUS 3157 LED Bulbs Amber Yellow with Built-in Resistor 3156 3457A 4057 4157 Anti Hyper Flash Error Free Front Rear Turn Signal Lights and Blinker Maker DRL Parking Lights Pack of 2**AUXITO**$34.87**4.5★35,933 rev](https://www.amazon.com/dp/B0D2HMYMP6) [5**Auxbeam B21 Series 3157 LED Bulbs White Built in Resistor Error Free Anti Hyper Flash 3156 3457 4157 Bulb 600% Super Bright Backup Reverse Light Parking Daytime Running Turn Signal Lights**Auxbeam**$33.86**4.4★432 rev](https://www.amazon.com/dp/B0FLDKQK7Y)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**LASFIT 3157 LED Bulb Amber 3057 4157 3156 LED Built in Resistor Anti Hyper Flash CANBUS 3157 LED Turn Signal Lights with Fan 3057A 4057 Error Free No Load Resistor Need Pack of 2**LASFIT**$53.91**1,589 rev4mo ago](https://www.amazon.com/dp/B0GRHDV2MB) [**Eponcia 2PCS 3157 Switchback LED Turn Signal Bulb with Built in Resistor Two-color Design Car Switch Back Led Turn Signal Super Bright Daytime Running Light Replacement for Truck SUV (White & Yellow)**Eponcia**$13.09**23 rev7mo ago](https://www.amazon.com/dp/B0G37SS39V) [**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) [**SEALIGHT Reverse Light Bulbs 3157 LED Bulb White 700% Brighter 3156 3057 4157 4114 T25 Bulbs 57-SMD LED Chipset with Projector Len for Brake Light DRL Backup Light Pack of 2**SEALIGHT**$15.71**6,881 rev9mo ago](https://www.amazon.com/dp/B0FP4Z9WDD) [**AUXITO 3157 LED Bulb White Reverse Light 3156 3056 3057 4157 3047 4057 3457 4114 Super Bright for Backup Lights Tail DRL Brake Signal Parking Lights Pack of 2**AUXITO**$14.10**11,013 rev9mo ago](https://www.amazon.com/dp/B0FM2VT45X)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**LASFIT 3157 LED Bulb Amber 3057 4157 3156 LED Built in Resistor Anti Hyper Flash CANBUS 3157 LED Turn Signal Lights with Fan 3057A 4057 Error Free No Load Resistor Need Pack of 2**LASFIT**$53.91**4.5★**▲ 241%**](https://www.amazon.com/dp/B0GRHDV2MB) [**LASFIT 3157 LED Bulb for Reverse Light 3156 3056 LED Bubs 6000K Xenon White Super Bright 3057 3047 4114 4157 4057 LED Lights with Projector for Backup DRL Only for Standard Socket (2-Pcs)**LASFIT**$21.11**4.5★**▲ 176%**](https://www.amazon.com/dp/B0CNX1LD5M) [**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**4.5★**▲ 135%**](https://www.amazon.com/dp/B0FP4ZVY6Z) [**Eponcia 2PCS 3157 Switchback LED Turn Signal Bulb with Built in Resistor Two-color Design Car Switch Back Led Turn Signal Super Bright Daytime Running Light Replacement for Truck SUV (White & Yellow)**Eponcia**$13.09**2.8★**▲ 94%**](https://www.amazon.com/dp/B0G37SS39V) [**AUXLIGHT 3157 3057 4157 3155 3457 Switchback LED Bulbs 16SMD Chipsets Parking Lights/Daytime Running Lights/DRL and Turn Signal Lights with Projector replacement White/Amber (Pack of 2)**AUXLIGHT**$15.79**4.3★**▲ 68%**](https://www.amazon.com/dp/B07X3HQ3BR)
**~~View all trending →~~**
## **What buyers say about 3157 led bulb with built in resistor**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Brightness/Shine/Glow**52%
*“BRIGHT LIGHT”*
**Size-Overall**9%
*“Fits like a glove”*
**Quality-Overall**8%
*“Excellent product”*
**Assembly/Installation**6%
*“all are ready to install”*
**Value For Money**5%
*“Great value”*
**Efficiency**3%
*“works well”*
**Color**2%
*“the yellow look great”*
**Advertised Vs Actual Product**2%
*“Truely as advertised”*
**Functionality-Overall**2%
*“These bulbs work”*
**Ease Of Use**1%
*“Useful”*
### **What buyers complain about **
**Durability**28%
*“Broke after 2 months”*
**Compatibility-Overall**10%
*“Bulb wasnt compatible”*
**Functionality-Overall**8%
*“Won't recommend fast blink”*
**Size-Overall**8%
*“They are very loose”*
**Brightness/Shine/Glow**6%
*“these are not nearly as bright”*
**Quality-Overall**6%
*“Bad quality”*
**Noise Level**4%
*“the fan makes alot of noise”*
**Value For Money**4%
*“Not worth that price”*
**Advertised Vs Actual Product**3%
*“Not as advertised”*
**Heating**2%
*“Super hot to touch”*
### **Top return reasons **
**Size-Overall**41%
**Compatibility-Overall**18%
**Functionality-Overall**11%
**Advertised Vs Actual Product**5%
**Defective Material/Parts**5%
**Brightness/Shine/Glow**5%
**Color**4%
**Socket/Port/Plug**3%
**Assembly/Installation**2%
**Value For Money**2%
## **Common questions**
- **Is 3157 led bulb with built in resistor profitable to sell on Amazon United States?**
- The niche generates $28K/yr across 33 tracked products. 5 of 9 products launched in the last 360 days are still selling. 90-day search growth is -18.5%. Flapen's verdict: Skip it (38/100).
- **How competitive is the 3157 led bulb with built in resistor niche?**
- 11 brands and 21 sellers compete. The top 5 products take 49% of clicks and top 5 brands hold 86% of demand.
- **What do buyers complain about in 3157 led bulb with built in resistor?**
- Top complaints mined from reviews: Durability, Compatibility-Overall, Functionality-Overall. The return rate is 5.5% — above our launch gate.
- **When does demand for 3157 led bulb with built in resistor peak?**
- Demand is steady year-round — the busiest month runs 1.7× the quietest.
- **What does it cost to enter the 3157 led bulb with built in resistor niche?**
- Listings span $12.84–$55.15; the average listing price is $27.27 (sweet spot $15–$100). The average incumbent carries 13,312 reviews — the moat a new listing must climb.
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