---
title: "cmr7h spark plug — Niche Verdict: Skip it (47/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/automotive/cmr7h-spark-plug"
last_updated: "2026-07-14T00:05:20.001Z"
locale: en
meta:
  description: "a small market ($87K/yr) — cmr7h spark plug doesn't clear our bar today."
  "og:description": "a small market ($87K/yr) — cmr7h spark plug doesn't clear our bar today."
  "og:title": "cmr7h spark plug — Niche Verdict: Skip it (47/100) | Amazon United States - Flapen"
---

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# **cmr7h spark plug**

**Skip it**

A small market ($87K/yr) — this niche doesn't clear our bar today.

Market size 22Growth 38Conversion 100Competition 23Returns 92Price range 74Avg price 60Brand share 22Review moat 90Quality gap 24

**Conversion**

**Incredible****19.2%**

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

**Returns**

**Great****1.2%**

return rate — above 6% kills the launch gate

**Review moat**

**Great****194.54**

avg incumbent reviews — the moat a new listing must climb

**Price range**

**Good****$4.01–$45.97**

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

**Avg price**

**Good****$13.18**

avg listing price — sweet spot $15–$100

**Growth**

**Okay****+10.2%**

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

**Quality gap**

**Bad****4.6★**

avg incumbent rating — lower means beatable quality

**Competition**

**Bad****73%**

top-5 click share — a locked-up shelf

**Market size**

**Bad****$87K**

$87K/yr · 34K searches

**Brand share**

**Bad****91%**

top-5 brand share — brand-locked demand

## **Competition**

The top 5 products capture 73% of clicks — a locked-up shelf that new listings rarely crack.

**Brands**

**8 **▲rising

**Sellers**

**56**

**Top-5 brand share**

**91%**

**Open market**

**6%**

- NGK67% - Adefol12% - Cynkpeg5% - AZXX4% - Atunee4% - LhyBtm3% - Open — no brand owns it (2 brands, 6%)

## **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%$9K20%$17K30%$26K40%$35K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

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

All 13 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![NGK Spark Plug CMR7H](https://m.media-amazon.com/images/I/31Z6VDXnuqL.jpg)**NGK Spark Plug CMR7H**NGK**$8.57**4.8★362 rev](https://www.amazon.com/dp/B07RHQ5FR4) [2![Outdoor Power Equipment NEW NGK SPARK PLUG CMR7H 3066 1656 2 PACK](https://m.media-amazon.com/images/I/51NYa7S+55L.jpg)**Outdoor Power Equipment NEW NGK SPARK PLUG CMR7H 3066 1656 2 PACK**NGK**$13.39**4.8★120 rev](https://www.amazon.com/dp/B01M70QWAP) [3![NGK 6 Pack of Replacement Spark Plugs # CMR7H-6PK](https://m.media-amazon.com/images/I/41rNa8r62sL.jpg)**NGK 6 Pack of Replacement Spark Plugs # CMR7H-6PK**NGK**$25.68**4.8★405 rev](https://www.amazon.com/dp/B004NMTV6K) [4![10 Pack CMR7H Spark Plugs Spark Plug for Shindaiwa 3699-91867 Red Max 369991867 506615101 544260901 Sparkplug for Husqvarna 581362301 Stihl Redmax Blowers Brushcutters Trimmers Chain Saws](https://m.media-amazon.com/images/I/51ylvAcUTLL.jpg)**10 Pack CMR7H Spark Plugs Spark Plug for Shindaiwa 3699-91867 Red Max 369991867 506615101 544260901 Sparkplug for Husqvarna 581362301 Stihl Redmax Blowers Brushcutters Trimmers Chain Saws**Adefol**$13.97**4.4★63 rev](https://www.amazon.com/dp/B0D2HVWXR2) [5![NGK CMR7H Standard Spark Plug](https://m.media-amazon.com/images/I/41jhdsjvxML.jpg)**NGK CMR7H Standard Spark Plug**NGK**$5.74**4.7★1,432 rev](https://www.amazon.com/dp/B000VXIKH6)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![Yistiun CMR7H 3066 1656 Spark Plugs for Shindaiwa 3699-91867 for Red Max 369991867 506615101 544260901 for Husqvarna 581362301 for Stihl for Redmax Blowers Brushcutters Trimmers Chain Saws](https://m.media-amazon.com/images/I/41eJ5sT7w9L.jpg)**Yistiun CMR7H 3066 1656 Spark Plugs for Shindaiwa 3699-91867 for Red Max 369991867 506615101 544260901 for Husqvarna 581362301 for Stihl for Redmax Blowers Brushcutters Trimmers Chain Saws**Yistiun**$4.01**2 rev5mo ago](https://www.amazon.com/dp/B0GKYYSHPM) [![581362301 CMR7H Spark Plugs for Shindaiwa 3699-91867 Red Max 506615101 544260901 Champion 965/RZ7C RZ7CT10 Brisk TR14C TR14S Autolite 4194 Tanaka 018-16005-20 Torch AC7R](https://m.media-amazon.com/images/I/41evcqexUEL.jpg)**581362301 CMR7H Spark Plugs for Shindaiwa 3699-91867 Red Max 506615101 544260901 Champion 965/RZ7C RZ7CT10 Brisk TR14C TR14S Autolite 4194 Tanaka 018-16005-20 Torch AC7R**Moleyaso**$8.96**7 rev8mo ago](https://www.amazon.com/dp/B0FWXJ7HY1) [![AZXX CMR7H Spark Plug 2 Pack for NGK CMR7H Spark Plug Fit for Champion RZ7C RZ7CT10 for Husqvarna 506615101 544260901 Redmax 369991867 Leaf Blower Shindaiwa Trimmer Fit for Stihl Chainsaw](https://m.media-amazon.com/images/I/41itkkb05WL.jpg)**AZXX CMR7H Spark Plug 2 Pack for NGK CMR7H Spark Plug Fit for Champion RZ7C RZ7CT10 for Husqvarna 506615101 544260901 Redmax 369991867 Leaf Blower Shindaiwa Trimmer Fit for Stihl Chainsaw**AZXX**$8.27**11 rev1y ago](https://www.amazon.com/dp/B0F4L53BNN) [![Cynkpeg 4PCS CMR7H Spark Plug for Husqvarna 506615101 544260901 Spark Plug Replace for Champion RZ7C NGK Redmax 369991867 Shindaiwa 3699-91867 Brushcutters Trimmer Chainsaws](https://m.media-amazon.com/images/I/41r71Qp4wFL.jpg)**Cynkpeg 4PCS CMR7H Spark Plug for Husqvarna 506615101 544260901 Spark Plug Replace for Champion RZ7C NGK Redmax 369991867 Shindaiwa 3699-91867 Brushcutters Trimmer Chainsaws**Cynkpeg**$9.59**8 rev1y ago](https://www.amazon.com/dp/B0F1YXCWL9) [![CMR7H Spark Plugs Replacement for Shindaiwa 3699-91867 Red Max 369991867 506615101 544260901 1 Pack Spark plug for Husqvarna 581362301 Stihl Redmax Blowers Brushcutters Trimmers Chain Saws](https://m.media-amazon.com/images/I/41aJYnsvkML.jpg)**CMR7H Spark Plugs Replacement for Shindaiwa 3699-91867 Red Max 369991867 506615101 544260901 1 Pack Spark plug for Husqvarna 581362301 Stihl Redmax Blowers Brushcutters Trimmers Chain Saws**Adefol**$6.06**29 rev1y ago](https://www.amazon.com/dp/B0DPKC394P)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![Yistiun CMR7H 3066 1656 Spark Plugs for Shindaiwa 3699-91867 for Red Max 369991867 506615101 544260901 for Husqvarna 581362301 for Stihl for Redmax Blowers Brushcutters Trimmers Chain Saws](https://m.media-amazon.com/images/I/41eJ5sT7w9L.jpg)**Yistiun CMR7H 3066 1656 Spark Plugs for Shindaiwa 3699-91867 for Red Max 369991867 506615101 544260901 for Husqvarna 581362301 for Stihl for Redmax Blowers Brushcutters Trimmers Chain Saws**Yistiun**$4.01**5.0★**▲ 225%**](https://www.amazon.com/dp/B0GKYYSHPM) [![581362301 CMR7H Spark Plugs for Shindaiwa 3699-91867 Red Max 506615101 544260901 Champion 965/RZ7C RZ7CT10 Brisk TR14C TR14S Autolite 4194 Tanaka 018-16005-20 Torch AC7R](https://m.media-amazon.com/images/I/41evcqexUEL.jpg)**581362301 CMR7H Spark Plugs for Shindaiwa 3699-91867 Red Max 506615101 544260901 Champion 965/RZ7C RZ7CT10 Brisk TR14C TR14S Autolite 4194 Tanaka 018-16005-20 Torch AC7R**Moleyaso**$8.96**4.7★**▲ 109%**](https://www.amazon.com/dp/B0FWXJ7HY1) [![Cynkpeg 4PCS CMR7H Spark Plug for Husqvarna 506615101 544260901 Spark Plug Replace for Champion RZ7C NGK Redmax 369991867 Shindaiwa 3699-91867 Brushcutters Trimmer Chainsaws](https://m.media-amazon.com/images/I/41r71Qp4wFL.jpg)**Cynkpeg 4PCS CMR7H Spark Plug for Husqvarna 506615101 544260901 Spark Plug Replace for Champion RZ7C NGK Redmax 369991867 Shindaiwa 3699-91867 Brushcutters Trimmer Chainsaws**Cynkpeg**$9.59**4.2★**▲ 48%**](https://www.amazon.com/dp/B0F1YXCWL9) [![NGK Genuine 10 Pack Spark Plugs Resistor for Lawn Mowers fits B&Q MC018 Beast Lawn 36FBM1 54FBM19 M36BDB M36FDB / 3066-10PK CMR7H](https://m.media-amazon.com/images/I/41u8MhsFU7L.jpg)**NGK Genuine 10 Pack Spark Plugs Resistor for Lawn Mowers fits B&Q MC018 Beast Lawn 36FBM1 54FBM19 M36BDB M36FDB / 3066-10PK CMR7H**NGK**$45.97**4.8★**▲ 19%**](https://www.amazon.com/dp/B00TD7CAXQ) [![NGK Spark Plug CMR7H](https://m.media-amazon.com/images/I/31Z6VDXnuqL.jpg)**NGK Spark Plug CMR7H**NGK**$8.57**4.8★**▲ 18%**](https://www.amazon.com/dp/B07RHQ5FR4)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 62 weeks — +10.2% search growth over the last 90 days.

1K800Spike '25Black Friday '25Spike '26 seasonMayJunJulAugSepOctNovDecJanFebMarAprMayJun

Peak months: Mar, Apr, Nov · busiest ÷ quietest = 2.3×

## **Reviews**

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

### **What buyers love **

**Socket/Port/Plug**18%

*“Great Plugs”*

**Value For Money**17%

*“Good value”*

**Quality-Overall**16%

*“I would recommend these replacements as they seem to be good quality”*

**Size-Overall**13%

*“They are a perfect fit”*

**Advertised Vs Actual Product**13%

*“Work as advertised”*

**Assembly/Installation**8%

*“It was easy to install”*

**Fuel Efficiency**6%

*“solid value if you want to keep a small engine running smooth”*

**Material Quality**2%

*“they look to be made from high-quality material”*

**Efficiency**2%

*“Working great”*

### **What buyers complain about **

**Functionality-Overall**25%

*“Doesn't give a great spark”*

**Durability**17%

*“the foul out after a few uses”*

### **Top return reasons **

**Size-Overall**63%

**Advertised Vs Actual Product**9%

**Defective Material/Parts**8%

**Functionality-Overall**6%

**Compatibility-Overall**6%

**Value For Money**3%

**Quality-Overall**2%

**Socket/Port/Plug**2%