---
title: "spark plugs — Niche Verdict: Worth a look (57/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/automotive/spark-plugs"
last_updated: "2026-07-14T00:21:01.196Z"
locale: en
meta:
  description: "spark plugs shows a $12.6M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list."
  "og:description": "spark plugs shows a $12.6M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list."
  "og:title": "spark plugs — Niche Verdict: Worth a look (57/100) | Amazon United States - Flapen"
---

Back to Flapen home

# **spark plugs**

**Worth a look**

Shows a $12.6M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size 100Growth 19Conversion 33Competition 88Returns 42Price range 53Avg price 94Brand share 56Review moat 57Quality gap 28

**Market size**

**Incredible****$12.6M**

$12.6M/yr · 10.3M searches

**Avg price**

**Great****$46.82**

avg listing price — sweet spot $15–$100

**Competition**

**Great****27%**

top-5 click share — an open shelf

**Review moat**

**Good****1,236.24**

avg incumbent reviews — the moat a new listing must climb

**Brand share**

**Good****71%**

top-5 brand share — brands hold most of the demand

**Price range**

**Good****$3.28–$164.27**

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

**Returns**

**Okay****3.9%**

return rate — above 6% kills the launch gate

**Conversion**

**Okay****2.6%**

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

**Quality gap**

**Okay****4.6★**

avg incumbent rating — lower means beatable quality

**Growth**

**Bad****-12.5%**

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

## **Competition**

Clicks spread well past the top 5 (27% combined) — an open shelf where new products get seen.

**Brands**

**32 **▲rising

**Sellers**

**172**

**Top-5 brand share**

**71%**

**Open market**

**25%**

- NGK49% - Bosch8% - A-Premium6% - ACDelco5% - ENA4% - LCWRGS4%

## **Product shelf**

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%3%$378K6%$756K9%$1.1M12%$1.5M1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 106 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![NGK LKR7DIX-11S Iridium IX Spark Plug (93175 Iridium Ix) 4 Pack](https://m.media-amazon.com/images/I/4104V52f7SL.jpg)**NGK LKR7DIX-11S Iridium IX Spark Plug (93175 Iridium Ix) 4 Pack**NGK**$33.54**4.6★2,242 rev](https://www.amazon.com/dp/B07FP6KFLT) [2![NGK # 3186 G-Power Platinum Spark Plugs TR5GP - 8 PCSNEW](https://m.media-amazon.com/images/I/51mFOdgro1L.jpg)**NGK # 3186 G-Power Platinum Spark Plugs TR5GP - 8 PCSNEW**NGK**$35.16**4.6★4,890 rev](https://www.amazon.com/dp/B00PMKOI06) [3![NGK LKAR7BIX-11S Iridium IX Spark Plug (93501 Iridium Ix) 4 Pack](https://m.media-amazon.com/images/I/41ZvL4OxeHL.jpg)**NGK LKAR7BIX-11S Iridium IX Spark Plug (93501 Iridium Ix) 4 Pack**NGK**$34.08**4.5★2,854 rev](https://www.amazon.com/dp/B07FNVYGFL) [4![NGK 3951 Spark Plugs TR55 (6 Pack)](https://m.media-amazon.com/images/I/41KzO14lo-L.jpg)**NGK 3951 Spark Plugs TR55 (6 Pack)**NGK**$20.71**4.7★5,018 rev](https://www.amazon.com/dp/B082DQ7GPK) [5![NGK 3951 Spark Plugs TR55 (8 Pack)](https://m.media-amazon.com/images/I/41iyhDqHkfL.jpg)**NGK 3951 Spark Plugs TR55 (8 Pack)**NGK**$26.85**4.6★5,004 rev](https://www.amazon.com/dp/B0724YYQG7)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![Teybouk 4PCS Car Spark Plugs Iridium Car Ignition Plugs Designed for 5464 BKR5EIX-11 Vehicle Ignition System Upgrade Replacement Parts Compatible with Honda Lexus (Silver)](https://m.media-amazon.com/images/I/41KUVDvO9YL.jpg)**Teybouk 4PCS Car Spark Plugs Iridium Car Ignition Plugs Designed for 5464 BKR5EIX-11 Vehicle Ignition System Upgrade Replacement Parts Compatible with Honda Lexus (Silver)**Teybouk**$11.48**23 rev9mo ago](https://www.amazon.com/dp/B0FSQTHQ2T) [![Iridium Spark Plugs 4 Pack 7092 BKR6EGP Fit for Toyota Camry RAV4 Celica Solara Matrix Corolla Highlander Dodge Neon Pontiac Vibe Scion tC xB Honda CRZ Subaru Forester Impreza Acura Integra](https://m.media-amazon.com/images/I/41AdkCLba8L.jpg)**Iridium Spark Plugs 4 Pack 7092 BKR6EGP Fit for Toyota Camry RAV4 Celica Solara Matrix Corolla Highlander Dodge Neon Pontiac Vibe Scion tC xB Honda CRZ Subaru Forester Impreza Acura Integra**A-NAFTULY**$17.66**82 rev1y ago](https://www.amazon.com/dp/B0F7RBTV62) [![Ignition Coil Pack and Iridium Spark Plugs Set of 6 Compatible with Chrysler 200 300 Town & Jeep Grand Cherokee/Wrangler & Dodge Grand Caravan/Charger/Journey & Ram 1500/ProMaster 3.6L V6 UF648+97390](https://m.media-amazon.com/images/I/41pixbi3oOL.jpg)**Ignition Coil Pack and Iridium Spark Plugs Set of 6 Compatible with Chrysler 200 300 Town & Jeep Grand Cherokee/Wrangler & Dodge Grand Caravan/Charger/Journey & Ram 1500/ProMaster 3.6L V6 UF648+97390**Motorevo**$69.55**63 rev1y ago](https://www.amazon.com/dp/B0F7XN33QR) [![WJAUTO Spark Plugs Iridium 4 Pack Pre-Gapped Bujas Sparkplugs OEM Replacement for Hyundai Sonata Kia Acura Chrysler Honda Lexus Mazda Mercedes-B-ENZ Mini Mitsubishi](https://m.media-amazon.com/images/I/41aQ1roaeRL.jpg)**WJAUTO Spark Plugs Iridium 4 Pack Pre-Gapped Bujas Sparkplugs OEM Replacement for Hyundai Sonata Kia Acura Chrysler Honda Lexus Mazda Mercedes-B-ENZ Mini Mitsubishi**WJAUTO**$19.33**77 rev1y ago](https://www.amazon.com/dp/B0F4F14684) [![WJAUTO Spark Plugs Iridium 4 Pack Pre-Gapped Bujas Sparkplugs OEM Replacement for Toyota Mazda Nissan Mercedes-Benz Lexus Land Rover Jaguar Infiniti Chevrolet Acura Pontiac Scion Suzuki](https://m.media-amazon.com/images/I/41+MZSk2Y-L.jpg)**WJAUTO Spark Plugs Iridium 4 Pack Pre-Gapped Bujas Sparkplugs OEM Replacement for Toyota Mazda Nissan Mercedes-Benz Lexus Land Rover Jaguar Infiniti Chevrolet Acura Pontiac Scion Suzuki**WJAUTO**$19.26**47 rev1y ago](https://www.amazon.com/dp/B0F4FK2MJ9)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![APR Iridium Pro Spark Plug Z1003100 - For Select VW Group MQB & MLB Engine Models (Volkswagen Audi & Porsche) - 14x26.5x16mm - Heat Range 9 - Performance Upgrade - Replaces OEM Stock Parts - 1 Pack](https://m.media-amazon.com/images/I/41Dh0dCDOjL.jpg)**APR Iridium Pro Spark Plug Z1003100 - For Select VW Group MQB & MLB Engine Models (Volkswagen Audi & Porsche) - 14x26.5x16mm - Heat Range 9 - Performance Upgrade - Replaces OEM Stock Parts - 1 Pack**APR**$29.56**4.8★**▲ 165%**](https://www.amazon.com/dp/B0DJDSFVXS) [![NGK 2667 Spark Plug BKR7EIX Iridium IX (4 Pack)](https://m.media-amazon.com/images/I/41nKopfZxLL.jpg)**NGK 2667 Spark Plug BKR7EIX Iridium IX (4 Pack)**NGK**$35.70**4.7★**▲ 135%**](https://www.amazon.com/dp/B07X7HL3PS) [![Teybouk 4PCS Car Spark Plugs Iridium Car Ignition Plugs Designed for 5464 BKR5EIX-11 Vehicle Ignition System Upgrade Replacement Parts Compatible with Honda Lexus (Silver)](https://m.media-amazon.com/images/I/41KUVDvO9YL.jpg)**Teybouk 4PCS Car Spark Plugs Iridium Car Ignition Plugs Designed for 5464 BKR5EIX-11 Vehicle Ignition System Upgrade Replacement Parts Compatible with Honda Lexus (Silver)**Teybouk**$11.48**4.4★**▲ 135%**](https://www.amazon.com/dp/B0FSQTHQ2T) [![NGK Spark Plugs (USA) Inc. IZFR6K11 Spark Plugs Izfr6K11 4Pack](https://m.media-amazon.com/images/I/41boFyz5beL.jpg)**NGK Spark Plugs (USA) Inc. IZFR6K11 Spark Plugs Izfr6K11 4Pack**NGK**$46.54**4.8★**▲ 119%**](https://www.amazon.com/dp/B00SWVG9AO) [![Iridium Spark Plugs 4 Pack 7092 BKR6EGP Fit for Toyota Camry RAV4 Celica Solara Matrix Corolla Highlander Dodge Neon Pontiac Vibe Scion tC xB Honda CRZ Subaru Forester Impreza Acura Integra](https://m.media-amazon.com/images/I/41AdkCLba8L.jpg)**Iridium Spark Plugs 4 Pack 7092 BKR6EGP Fit for Toyota Camry RAV4 Celica Solara Matrix Corolla Highlander Dodge Neon Pontiac Vibe Scion tC xB Honda CRZ Subaru Forester Impreza Acura Integra**A-NAFTULY**$17.66**4.7★**▲ 109%**](https://www.amazon.com/dp/B0F7RBTV62)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 104 weeks — -12.5% search growth over the last 90 days.

250K150KSpike '25Spike '26 seasonSepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.5×

## **Reviews**

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

### **What buyers love **

**Quality-Overall**22%

*“Good quality tool”*

**Value For Money**16%

*“Fair price”*

**Size-Overall**16%

*“Fits application”*

**Socket/Port/Plug**10%

*“Good sockets”*

**Advertised Vs Actual Product**8%

*“As advertised”*

**Assembly/Installation**6%

*“Easy Installation”*

**Efficiency**6%

*“Work flawlessly”*

**Durability**2%

*“didn't break anything”*

**Ease Of Use**2%

*“Ease of removal”*

**Fuel Efficiency**1%

*“More fuel efficient”*

### **What buyers complain about **

**Quality-Overall**17%

*“Horrible quality”*

**Durability**14%

*“Broke during first use”*

**Size-Overall**8%

*“They are too large”*

**Compatibility-Overall**8%

*“Not compatible”*

**Value For Money**5%

*“Not a good purchase even with the low price”*

**Magnetic Strength/Adsorption**5%

*“the magnet fell out”*

**Socket/Port/Plug**5%

*“Worst plugs”*

**Product Condition**4%

*“One was use before or somebody tried to use”*

**Defective Material/Parts**4%

*“Faulty parts”*

**Flammable**3%

*“Many misfires”*

### **Top return reasons **

**Size-Overall**37%

**Compatibility-Overall**18%

**Defective Material/Parts**8%

**Advertised Vs Actual Product**6%

**Product Condition**5%

**Socket/Port/Plug**5%

**Value For Money**5%

**Functionality-Overall**4%

**Quality-Overall**2%

**Flammable**2%