---
title: "glow plug — Niche Verdict: Skip it (49/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/automotive/glow-plug"
last_updated: "2026-07-13T22:35:41.937Z"
locale: en
meta:
  description: "soft demand (-33.9% this quarter) — glow plug doesn't clear our bar today."
  "og:description": "soft demand (-33.9% this quarter) — glow plug doesn't clear our bar today."
  "og:title": "glow plug — Niche Verdict: Skip it (49/100) | Amazon United States - Flapen"
---

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# **glow plug**

**Skip it**

Soft demand (-33.9% this quarter) — this niche doesn't clear our bar today.

Market size 13Growth 8Conversion 35Competition 68Returns 65Price range 81Avg price 95Brand share 67Review moat 89Quality gap 58

**Avg price**

**Incredible****$32.39**

avg listing price — sweet spot $15–$100

**Review moat**

**Great****228.91**

avg incumbent reviews — the moat a new listing must climb

**Price range**

**Great****$10.14–$112.98**

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

**Competition**

**Good****44%**

top-5 click share — leaders hold, buyers still browse

**Brand share**

**Good****65%**

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

**Returns**

**Good****2.4%**

return rate — above 6% kills the launch gate

**Quality gap**

**Good****4.4★**

avg incumbent rating — lower means beatable quality

**Conversion**

**Okay****2.8%**

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

**Market size**

**Bad****$53K**

$53K/yr · 59K searches

**Growth**

**Bad****-33.9%**

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

## **Competition**

The top 5 products take 44% of clicks — established leaders, but buyers still shop beyond them.

**Brands**

**20 **▼falling

**Sellers**

**52**

**Top-5 brand share**

**65%**

**Open market**

**31%**

- GM GENUINE PARTS35% - Bosch9% - Motorcraft8% - YijiaLink7% - DNA MOTORING6% - YIUIY5%

## **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%5%$3K10%$5K15%$8K20%$11K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted

All 34 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![GM Genuine Parts 9G (12639701) Glow Plug (Pack of 1)](https://m.media-amazon.com/images/I/11WA8s4My9L.jpg)**GM Genuine Parts 9G (12639701) Glow Plug (Pack of 1)**GM GENUINE PARTS**$20.03**4.7★1,749 rev](https://www.amazon.com/dp/B00496LXJ8) [2![GM Genuine Parts 68G (12690238) Glow Plug](https://m.media-amazon.com/images/I/216pfCzPeXS.jpg)**GM Genuine Parts 68G (12690238) Glow Plug**GM GENUINE PARTS**$32.56**4.6★89 rev](https://www.amazon.com/dp/B0842WSRXM) [3![8 PC Motorcraft ZD-11 F4TZ-12A342-BA Glow Plugs 1995-2003 Ford 7.3 Liter](https://m.media-amazon.com/images/I/217HE6FLAxL.jpg)**8 PC Motorcraft ZD-11 F4TZ-12A342-BA Glow Plugs 1995-2003 Ford 7.3 Liter**Motorcraft**$103.81**4.6★885 rev](https://www.amazon.com/dp/B017O2I7NS) [4![3-Pack Hot Spark Glow Plug N4 No.4 70117 Compatible with Kyosho HSP HPI Redcat 1/8 1/10 RC Nitro Engines Car Truck Buggy](https://m.media-amazon.com/images/I/41Q3KC2ZNfL.jpg)**3-Pack Hot Spark Glow Plug N4 No.4 70117 Compatible with Kyosho HSP HPI Redcat 1/8 1/10 RC Nitro Engines Car Truck Buggy**YijiaLink**$14.10**4.3★183 rev](https://www.amazon.com/dp/B0CG3GM77S) [5![DNA MOTORING Set of 8 Glow Plugs Compatible with 04-10 E350/E450 04-05 Excursion 04-07 F250F350/F450/F550 Super Duty V8 Diesel / 6.0L Turbo Diesel Models 8Pcs OE Style Glow Plug ZTL-H-0007](https://m.media-amazon.com/images/I/41sU2D2GAnS.jpg)**DNA MOTORING Set of 8 Glow Plugs Compatible with 04-10 E350/E450 04-05 Excursion 04-07 F250F350/F450/F550 Super Duty V8 Diesel / 6.0L Turbo Diesel Models 8Pcs OE Style Glow Plug ZTL-H-0007**DNA MOTORING**$24.62**4.9★48 rev](https://www.amazon.com/dp/B093GVFYS1)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![Ywdiml 4PCS Car Glow Plug Socket Set 8mm 10mm 12mm Vehicle Glow Plug Extractor Kit with 3/8 Dr T-Bar Automotive Repair Accessories Universal for Automobile Motorhome Truck](https://m.media-amazon.com/images/I/419jVduL9hL.jpg)**Ywdiml 4PCS Car Glow Plug Socket Set 8mm 10mm 12mm Vehicle Glow Plug Extractor Kit with 3/8 Dr T-Bar Automotive Repair Accessories Universal for Automobile Motorhome Truck**Ywdiml**$11.70**2 rev7mo ago](https://www.amazon.com/dp/B0G2WRD88Y) [![12639701 Diesel Glow Plugs 9G Compatible with 6.6 Duramax Chevy GMC LBZ LLY LML LMM LGH 2006-2016 Silverado Sierra 2500HD 3500HD Express Savana 2500 3500 Replace# 97364968](https://m.media-amazon.com/images/I/418XEQ9d33L.jpg)**12639701 Diesel Glow Plugs 9G Compatible with 6.6 Duramax Chevy GMC LBZ LLY LML LMM LGH 2006-2016 Silverado Sierra 2500HD 3500HD Express Savana 2500 3500 Replace# 97364968**Krimocy**$29.99**7 rev9mo ago](https://www.amazon.com/dp/B0FW4Y9TJK) [![12639701 Glow Plugs 9G Compatible with 6.6 Duramax Chevy GMC LBZ LLY LML LMM LGH Diesel Silverado Sierra 2500HD 3500HD Express Savana 2500 3500 2006-2016 Replace# 97364968 05613738 8 PCS](https://m.media-amazon.com/images/I/41+LRUDBwsL.jpg)**12639701 Glow Plugs 9G Compatible with 6.6 Duramax Chevy GMC LBZ LLY LML LMM LGH Diesel Silverado Sierra 2500HD 3500HD Express Savana 2500 3500 2006-2016 Replace# 97364968 05613738 8 PCS**GDUKOP**$32.91**18 rev11mo ago](https://www.amazon.com/dp/B0FLJLKG81) [![Koruidar 8Pcs 12639701 Diesel Glow Plug Compatible with 2006-2016 Express Silverado and Savana Sierra 8 Cyl 6.6L Diesel Replaces 97364968](https://m.media-amazon.com/images/I/41efqv+9NyL.jpg)**Koruidar 8Pcs 12639701 Diesel Glow Plug Compatible with 2006-2016 Express Silverado and Savana Sierra 8 Cyl 6.6L Diesel Replaces 97364968**Koruidar**$24.14**0 rev11mo ago](https://www.amazon.com/dp/B0FJLXGKBP) [![Ensun 68460484AB Diesel Glow Plug Dual Coils Compatible with 2014-2019 Grand Cherokee 6 Cyl 3.0L Diesel 2014-2018 Ram 1500 6 Cyl 3.0L Diesel 2019 Ram 1500 Classic](https://m.media-amazon.com/images/I/41sbPdTGNwL.jpg)**Ensun 68460484AB Diesel Glow Plug Dual Coils Compatible with 2014-2019 Grand Cherokee 6 Cyl 3.0L Diesel 2014-2018 Ram 1500 6 Cyl 3.0L Diesel 2019 Ram 1500 Classic**Ensun**$39.02**8 rev1y ago](https://www.amazon.com/dp/B0F9FFKQ1W)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![3-Pack Hot Spark Glow Plug N3 No.3 70117 Compatible with Kyosho HSP HPI Redcat 1/8 1/10 RC Nitro Engines Car Truck Buggy](https://m.media-amazon.com/images/I/41CuZ7gazbL.jpg)**3-Pack Hot Spark Glow Plug N3 No.3 70117 Compatible with Kyosho HSP HPI Redcat 1/8 1/10 RC Nitro Engines Car Truck Buggy**YijiaLink**$13.70**4.3★**▲ 228%**](https://www.amazon.com/dp/B0CG3D6SSV) [![12639701 Diesel Glow Plugs 9G Compatible with 6.6 Duramax Chevy GMC LBZ LLY LML LMM LGH 2006-2016 Silverado Sierra 2500HD 3500HD Express Savana 2500 3500 Replace# 97364968](https://m.media-amazon.com/images/I/418XEQ9d33L.jpg)**12639701 Diesel Glow Plugs 9G Compatible with 6.6 Duramax Chevy GMC LBZ LLY LML LMM LGH 2006-2016 Silverado Sierra 2500HD 3500HD Express Savana 2500 3500 Replace# 97364968**Krimocy**$29.99**4.5★**▲ 175%**](https://www.amazon.com/dp/B0FW4Y9TJK) [![Koruidar 8Pcs 12639701 Diesel Glow Plug Compatible with 2006-2016 Express Silverado and Savana Sierra 8 Cyl 6.6L Diesel Replaces 97364968](https://m.media-amazon.com/images/I/41efqv+9NyL.jpg)**Koruidar 8Pcs 12639701 Diesel Glow Plug Compatible with 2006-2016 Express Silverado and Savana Sierra 8 Cyl 6.6L Diesel Replaces 97364968**Koruidar**$24.14**0.0★**▲ 166%**](https://www.amazon.com/dp/B0FJLXGKBP) [![3-Pack Hot Spark Glow Plug N4 No.4 70117 Compatible with Kyosho HSP HPI Redcat 1/8 1/10 RC Nitro Engines Car Truck Buggy](https://m.media-amazon.com/images/I/41Q3KC2ZNfL.jpg)**3-Pack Hot Spark Glow Plug N4 No.4 70117 Compatible with Kyosho HSP HPI Redcat 1/8 1/10 RC Nitro Engines Car Truck Buggy**YijiaLink**$14.10**4.3★**▲ 158%**](https://www.amazon.com/dp/B0CG3GM77S) [![CrazyHobby 70117 Hot Glow Plug No.3 N3 Spark Nitro Engine Parts Replace OS 8 for Traxxas HPI HSP Kyosho 1/8 1/10 RC Car Truck Buggy (Pack of 6)](https://m.media-amazon.com/images/I/51vTvXiyuVL.jpg)**CrazyHobby 70117 Hot Glow Plug No.3 N3 Spark Nitro Engine Parts Replace OS 8 for Traxxas HPI HSP Kyosho 1/8 1/10 RC Car Truck Buggy (Pack of 6)**CrazyHobby**$26.02**4.3★**▲ 93%**](https://www.amazon.com/dp/B0CDBZ5F7Y)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 104 weeks — -33.9% search growth over the last 90 days.

2K1KSpike '24Holiday '24Spike '25 seasonSepDecMarJunAugNovMarMay

Peak months: Jan, Dec · busiest ÷ quietest = 1.9×

## **Reviews**

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

### **What buyers love **

**Size-Overall**16%

*“fit perfect”*

**Value For Money**13%

*“Excellent price”*

**Assembly/Installation**11%

*“Easy to install”*

**Advertised Vs Actual Product**11%

*“Works as advertised”*

**Quality-Overall**10%

*“Great quality replacement”*

**Efficiency**8%

*“Works perfectly”*

**Brightness/Shine/Glow**8%

*“Work good glow fine”*

**Durability**5%

*“The first set I ordered seems durable”*

**Socket/Port/Plug**4%

*“This glow plug socket set is a great value and includes three essential sizes: 8mm, 10mm, and 12mm, covering the most common glow plug applications”*

**Functionality-Overall**3%

*“But they work”*

### **What buyers complain about **

**Quality-Overall**30%

*“Cheap”*

**Durability**15%

*“One died after the first start”*

**Battery Inclusion**7%

*“It doesn't come with a battery”*

**Functionality-Overall**7%

*“all 3 were not working they are a cheap piece of crap”*

**Advertised Vs Actual Product**7%

*“not as advertised”*

**Size-Overall**6%

*“They do not fit LLY”*

**Strength**4%

*“it just overall seemed very weak”*

**Measurement/Reading Accuracy**4%

*“Item did not maintain a reading of less than 1 Ohm”*

**Defective Material/Parts**4%

*“Item did not maintain a reading of less than 1 Ohm”*

**Compatibility-Overall**4%

*“Not for LLY”*

### **Top return reasons **

**Size-Overall**31%

**Defective Material/Parts**15%

**Functionality-Overall**14%

**Compatibility-Overall**11%

**Advertised Vs Actual Product**5%

**Product Condition**4%

**Value For Money**3%

**Assembly/Installation**3%

**Socket/Port/Plug**3%

**Heating**2%