---
title: "ngk bpm8y — Niche Verdict: Worth a look (50/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/automotive/ngk-bpm8y"
last_updated: "2026-07-14T02:46:23.479Z"
locale: en
meta:
  description: "ngk bpm8y shows searches that convert (25.0% search→purchase), but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list."
  "og:description": "ngk bpm8y shows searches that convert (25.0% search→purchase), but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list."
  "og:title": "ngk bpm8y — Niche Verdict: Worth a look (50/100) | Amazon United States - Flapen"
---

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# **ngk bpm8y**

**Worth a look**

Shows searches that convert (25.0% search→purchase), but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list.

Market size 34Growth 82Conversion 100Competition 15Returns 96Price range 60Avg price 40Brand share 0Review moat 75Quality gap 18

**Conversion**

**Incredible****25.0%**

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

**Returns**

**Incredible****0.8%**

return rate — above 6% kills the launch gate

**Growth**

**Great****+76.3%**

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

**Review moat**

**Good****519.67**

avg incumbent reviews — the moat a new listing must climb

**Price range**

**Good****$7.23–$26.69**

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

**Avg price**

**Okay****$10.81**

avg listing price — sweet spot $15–$100

**Market size**

**Okay****$166K**

$166K/yr · 61K searches

**Quality gap**

**Bad****4.7★**

avg incumbent rating — lower means beatable quality

**Competition**

**Bad****82%**

top-5 click share — a locked-up shelf

**Brand share**

**Bad****100%**

top-5 brand share — brand-locked demand

## **Competition**

The top 5 products capture 82% of clicks — a locked-up shelf that new listings rarely crack.

**Brands**

**3 **▼falling

**Sellers**

**40**

**Top-5 brand share**

**100%**

**Open market**

**0%**

- NGK76% - Hipa22% - Wetenex2%

## **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%10%$17K20%$33K30%$50K40%$66K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

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

All 9 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![NGK (5574) BPM8Y Spark Plugs Individual Boxed - 2 Pack](https://m.media-amazon.com/images/I/41Jkr9PoKML.jpg)**NGK (5574) BPM8Y Spark Plugs Individual Boxed - 2 Pack**NGK**$8.92**4.8★652 rev](https://www.amazon.com/dp/B08B2FPC8N) [2![BPMR8Y Spark Plug for NGK 2218 BPM8Y Champion RCJ8Y](https://m.media-amazon.com/images/I/41xTyf2f+eL.jpg)**BPMR8Y Spark Plug for NGK 2218 BPM8Y Champion RCJ8Y**Hipa**$7.85**4.4★136 rev](https://www.amazon.com/dp/B0DT15XPG5) [3![NGK BPMR8Y 2218 Spark Plug QTY 2](https://m.media-amazon.com/images/I/31znTUMy0VL.jpg)**NGK BPMR8Y 2218 Spark Plug QTY 2**NGK**$8.73**4.8★477 rev](https://www.amazon.com/dp/B07D4N8SZ8) [4![NGK 5574 Standard Spark Plug - BPM8Y 10 Pack](https://m.media-amazon.com/images/I/416nga0jlBL.jpg)**NGK 5574 Standard Spark Plug - BPM8Y 10 Pack**NGK**$26.69**4.9★167 rev](https://www.amazon.com/dp/B004NMPX76) [5![NGK New OEM Spark Plug Echo Mantis BPM8Y 15901019830 2 Cycle Motor Engine](https://m.media-amazon.com/images/I/31yzxQLP8QL.jpg)**NGK New OEM Spark Plug Echo Mantis BPM8Y 15901019830 2 Cycle Motor Engine**NGK**$7.35**4.6★227 rev](https://www.amazon.com/dp/B071WMCTLM)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![BPMR8Y Spark Plug for NGK BPMR8Y BPM8Y Champion RCJ8Y Echo SRM225 PAS225 CS310 Shindaiwa 15901019830 A425000000 String Trimmer Chainsaw 2 pack](https://m.media-amazon.com/images/I/41cOaxgBy-L.jpg)**BPMR8Y Spark Plug for NGK BPMR8Y BPM8Y Champion RCJ8Y Echo SRM225 PAS225 CS310 Shindaiwa 15901019830 A425000000 String Trimmer Chainsaw 2 pack**Wetenex**$7.23**4 rev4mo ago](https://www.amazon.com/dp/B0GR8NLD2P) [![BPMR8Y Spark Plug for NGK 2218 BPM8Y Champion RCJ8Y](https://m.media-amazon.com/images/I/41xTyf2f+eL.jpg)**BPMR8Y Spark Plug for NGK 2218 BPM8Y Champion RCJ8Y**Hipa**$7.85**136 rev1y ago](https://www.amazon.com/dp/B0DT15XPG5) [![Hipa BPMR8Y Spark Plug for NGK 2218 BPM8Y Echo 15901019830 A425000000 Champion RCJ8Y TORCH L8RTC](https://m.media-amazon.com/images/I/41aXPJXW-yL.jpg)**Hipa BPMR8Y Spark Plug for NGK 2218 BPM8Y Echo 15901019830 A425000000 Champion RCJ8Y TORCH L8RTC**Hipa**$10.45**232 rev3y ago](https://www.amazon.com/dp/B0BD4FJKZT) [![NGK 5574 Standard Spark Plug - BPM8Y 10 Pack](https://m.media-amazon.com/images/I/416nga0jlBL.jpg)**NGK 5574 Standard Spark Plug - BPM8Y 10 Pack**NGK**$26.69**167 rev5y ago](https://www.amazon.com/dp/B004NMPX76) [![NGK (5574) BPM8Y Spark Plugs Individual Boxed - 2 Pack](https://m.media-amazon.com/images/I/41Jkr9PoKML.jpg)**NGK (5574) BPM8Y Spark Plugs Individual Boxed - 2 Pack**NGK**$8.92**652 rev6y ago](https://www.amazon.com/dp/B08B2FPC8N)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![BPMR8Y Spark Plug for NGK BPMR8Y BPM8Y Champion RCJ8Y Echo SRM225 PAS225 CS310 Shindaiwa 15901019830 A425000000 String Trimmer Chainsaw 2 pack](https://m.media-amazon.com/images/I/41cOaxgBy-L.jpg)**BPMR8Y Spark Plug for NGK BPMR8Y BPM8Y Champion RCJ8Y Echo SRM225 PAS225 CS310 Shindaiwa 15901019830 A425000000 String Trimmer Chainsaw 2 pack**Wetenex**$7.23**5.0★**▲ 157%**](https://www.amazon.com/dp/B0GR8NLD2P) [![NGK (5574) BPM8Y Spark Plugs Individual Boxed - 2 Pack](https://m.media-amazon.com/images/I/41Jkr9PoKML.jpg)**NGK (5574) BPM8Y Spark Plugs Individual Boxed - 2 Pack**NGK**$8.92**4.8★**▲ 39%**](https://www.amazon.com/dp/B08B2FPC8N) [![NGK New OEM Spark Plug Echo Mantis BPM8Y 15901019830 2 Cycle Motor Engine](https://m.media-amazon.com/images/I/31yzxQLP8QL.jpg)**NGK New OEM Spark Plug Echo Mantis BPM8Y 15901019830 2 Cycle Motor Engine**NGK**$7.35**4.6★**▲ 35%**](https://www.amazon.com/dp/B071WMCTLM) [![Hipa BPMR8Y Spark Plug for NGK 2218 BPM8Y Echo 15901019830 A425000000 Champion RCJ8Y TORCH L8RTC](https://m.media-amazon.com/images/I/41aXPJXW-yL.jpg)**Hipa BPMR8Y Spark Plug for NGK 2218 BPM8Y Echo 15901019830 A425000000 Champion RCJ8Y TORCH L8RTC**Hipa**$10.45**4.6★**▲ 24%**](https://www.amazon.com/dp/B0BD4FJKZT) [![BPMR8Y Spark Plug for NGK 2218 BPM8Y Champion RCJ8Y](https://m.media-amazon.com/images/I/41xTyf2f+eL.jpg)**BPMR8Y Spark Plug for NGK 2218 BPM8Y Champion RCJ8Y**Hipa**$7.85**4.4★**— 4%**](https://www.amazon.com/dp/B0DT15XPG5)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 104 weeks — +76.3% search growth over the last 90 days.

3K2KSpike '25Spike '26 seasonSepDecMarJunAugNovMarMay

Peak months: Apr, May · busiest ÷ quietest = 4.4×

## **Reviews**

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

### **What buyers love **

**Socket/Port/Plug**25%

*“good plugs”*

**Value For Money**15%

*“Fair price for good product”*

**Size-Overall**14%

*“Fits perfect”*

**Quality-Overall**12%

*“Great product / supplier”*

**Advertised Vs Actual Product**12%

*“Item as described”*

**Functionality-Overall**7%

*“Does it Work”*

**Correct Contents**5%

*“Correct part was shipped”*

**Efficiency**4%

*“Works perfectly”*

**Blower**2%

*“It definitely worked for my blower”*

**Ease Of Use**2%

*“Glad so easy to get”*

### **What buyers complain about **

**Size-Overall**33%

*“Small engine spark plug”*

**Maintenance And Repair**33%

*“I try to Replace with consistency or worry about Carb issues”*

**Quality-Overall**17%

*“These are junk”*

**Advertised Vs Actual Product**17%

*“This is deceptive at best”*

### **Top return reasons **

**Size-Overall**50%

**Advertised Vs Actual Product**26%

**Compatibility-Overall**5%

**Defective Material/Parts**4%

**Socket/Port/Plug**4%

**Value For Money**3%

**Functionality-Overall**3%

**Quality-Overall**1%

**Assembly/Installation**1%

**Certifications**1%