---
title: "5.7 Hemi Spark Plugs — $91K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/5-7-hemi-spark-plugs"
last_updated: "2026-08-09T10:44:37.645Z"
locale: en
meta:
description: "Niche score 41/100 · $91K/yr market · 45K searches/yr · $116.82 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 41/100 · $91K/yr market · 45K searches/yr · $116.82 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "5.7 Hemi Spark Plugs — $91K/yr Amazon US Niche (2026) - Flapen"
---
# **5.7 hemi spark plugs**
**Skip it**
Weak search conversion (1.7%) — this niche doesn't clear our bar today.
Market size 23Growth 25Conversion 22Competition 47Returns 59Price range 29Avg price 69Brand share 53Review moat 87Quality gap 43
**Review moat**
**Great****262.04**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Good****$116.82**
avg listing price — sweet spot $15–$100
**Returns**
**Good****2.6%**
return rate — above 5% kills the launch gate
**Brand share**
**Good****73%**
top-5 brand share — brands hold most of the demand
**Competition**
**Okay****57%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Price range**
**Okay****$9.23–$297.49**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Bad****-0.9%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$91K**
$91K/yr · 45K searches
**Conversion**
**Bad****1.7%**
search→purchase rate — share of searches ending in a sale
**Signals**[** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")
According to Flapen's Amazon United States niche tracking, 5.7 hemi spark plugs is a $91K/yr Amazon United States market (45K searches/yr). The top 5 brands hold 73% of demand. Verdict: Skip it — 41/100.
Data updated Jul 11, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **5.7 hemi spark plugs market data**
- **Units sold / yr**
- **500–750**
- avg 0–100/product
- **Revenue / yr**
- **$58K–$88K**
- units × avg price
- **Conversion rate**
- **1.7%**
- **Avg BSR**
- **#575**
- **Page quality**
- **0%**
- **Prime**
- **96%**
- **Sponsored**
- **76%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **44 months**
- **Avg seller age**
- **181 days**
## **Competition & brand share**
The top 5 products take 57% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**18 **—flat
**Sellers**
**39**
**Top-5 brand share**
**73%**
Top 20: 100%
**Top-5 click share**
**57%**
Top 20: 94%
**Open market**
**22%**
- Sixity Auto28% - Newparts16% - ENA14% - SYKRSS9% - BDFHYK6% - KAX5%
## **Demand**
Weekly Amazon search volume, last 17 weeks — -0.9% search growth over the last 90 days.
1K750Mar '26Mar '26Apr '26Apr '26May '26May '26Jun '26Jun '26Jul '26
[**Open Trend **](https://flapen.com/research/us/automotive/5-7-hemi-spark-plugs/trend)
## **Top 5.7 hemi spark plugs search terms**
- **5.7 hemi spark plugs**30K/yr-2.5%1.0% conv. - **mopar hemi spark plugs**7K/yr+16.5%1.0% conv. - **ram 1500 spark plugs**4K/yr-4.3%1.4% conv. - **ram spark plugs 5.7 hemi**4K/yr-12.5%1.4% conv. [**All search terms **](https://flapen.com/research/us/automotive/5-7-hemi-spark-plugs/search-terms)
## **Top 5.7 hemi spark plugs 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%$5K10%$9K15%$14K20%$18K1101001K10K 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**16 pc NGK Iridium IX Spark Plugs compatible with Ram 1500 5.7L V8 2011-2024 HEMI V8 truck**Sixity Auto**$154.62**4.7★557 rev](https://www.amazon.com/dp/B082812TZC) [2**NGK Set of 16 Iridium IX Spark Plugs For Chrysler Dodge Jeep Ram 5.7 6.4 V8**Newparts**$164.27**4.7★204 rev](https://www.amazon.com/dp/B09MKDPXFM) [3**SYKRSS Set of 8 Ignition Coil Pack UF504 and Iridium Spark Plugs LZFR5CI-11 16 Pack Compatible with Dodge Challenger Charger Durango Grand Cherokee Ram 1500 2500 3500 Aspen 300 5.7L V8**SYKRSS**$126.49**4.3★331 rev](https://www.amazon.com/dp/B0DDKX6C94) [4**16 pc Champion Copper Plus Spark Plugs compatible with Ram 1500 5.7L V8 2011-2024 HEMI V8 truck**Sixity Auto**$56.65**4.6★384 rev](https://www.amazon.com/dp/B0836FVD4Z) [5**KAX 8Pcs Ignition Coils and 16Pcs Iridium Spark Plugs w/Tool Kit for 5.7 Hemi Dodge Ram 1500 Chrysler 300 Challenger Charger Durango Jeep Commander Grand Cherokee 2009-2020 Replace#UF504**KAX**$160.87**4.4★467 rev](https://www.amazon.com/dp/B0F627MMSP)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**UF504 Set of 8 Ignition Coil Pack 16 Iridium Spark Plug Compatible with Chrysler 300 Ram 1500 2500 3500 Jeep Dodge Commander Grand Cherokee Challenger Charger V8 5.7L Replace#5602129AA (Red)**YONDRIX**$123.06**1 rev3mo ago](https://www.amazon.com/dp/B0GWQNH95G) [**Autoexact Ignition Coil Packs and Iridium Spark Plugs Set Fit for 5.7 V8 HEMI 2008-2024 Ram 1500 2500 3500 Dodge Charger Durango Challenger Jeep Grand Cherokee Chrysler 300 # UF504 92145 Set of 8**autoexact**$158.94**69 rev7mo ago](https://www.amazon.com/dp/B0FN6ZKPLC) [**UF504 Set of 8 Ignition Coil Pack 16 Iridium Spark Plug Compatible with Dodge Ram Jeep Chrysler - Challenger Charger Durango Ram 1500 2500 3500 Grand Cherokee Aspen 5.7L V8 Replace# C1526 56029129AA**GDUKOP**$119.35**26 rev1y ago](https://www.amazon.com/dp/B0F9NYKGZ1) [**KAX 8Pcs Ignition Coils and 16Pcs Iridium Spark Plugs w/Tool Kit for 5.7 Hemi Dodge Ram 1500 Chrysler 300 Challenger Charger Durango Jeep Commander Grand Cherokee 2009-2020 Replace#UF504**KAX**$160.87**467 rev1y ago](https://www.amazon.com/dp/B0F627MMSP) [**GBTAD Upgraded 8x Ignition Coil Pack and 16x Iridium Spark Plug for 5.7L V8 HEMI Dodge Ram 1500 2500 3500 Charger Durango Chrysler 300 Jeep Grand Cherokee 2006-2015 Replaces UF504**GBTAD**$165.99**20 rev1y ago](https://www.amazon.com/dp/B0DYNY3C71)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**UF504 Set of 8 Ignition Coil Pack 16 Iridium Spark Plug Compatible with Chrysler 300 Ram 1500 2500 3500 Jeep Dodge Commander Grand Cherokee Challenger Charger V8 5.7L Replace#5602129AA (Red)**YONDRIX**$123.06**5.0★**▲ 243%**](https://www.amazon.com/dp/B0GWQNH95G) [**Autoexact Ignition Coil Packs and Iridium Spark Plugs Set Fit for 5.7 V8 HEMI 2008-2024 Ram 1500 2500 3500 Dodge Charger Durango Challenger Jeep Grand Cherokee Chrysler 300 # UF504 92145 Set of 8**autoexact**$158.94**4.5★**▲ 127%**](https://www.amazon.com/dp/B0FN6ZKPLC) [**SYKRSS Set of 8 Ignition Coil Pack UF504 and Iridium Spark Plugs LZFR5CI-11 16 Pack Compatible with Dodge Challenger Charger Durango Grand Cherokee Ram 1500 2500 3500 Aspen 300 5.7L V8**SYKRSS**$126.49**4.3★**▲ 76%**](https://www.amazon.com/dp/B0DDKX6C94) [**KAX 8Pcs Ignition Coils and 16Pcs Iridium Spark Plugs w/Tool Kit for 5.7 Hemi Dodge Ram 1500 Chrysler 300 Challenger Charger Durango Jeep Commander Grand Cherokee 2009-2020 Replace#UF504**KAX**$160.87**4.4★**▲ 65%**](https://www.amazon.com/dp/B0F627MMSP) [**BDFHYK 4024123628 Iridium Spark Plugs Compatible with Ram 1500 2011-2021 Big Horn Crew Cab Pickup 4-Door 5.7L V8 GAS OHV Naturally Aspirated Set of 16**BDFHYK**$46.53**4.4★**▲ 61%**](https://www.amazon.com/dp/B0D9NGK3YS)
**~~View all trending →~~**
## **What buyers say about 5.7 hemi spark plugs**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**23%
*“Very nice, good quality tool”*
**Value For Money**15%
*“Worth it”*
**Socket/Port/Plug**14%
*“Good socket”*
**Size-Overall**9%
*“Good fit”*
**Advertised Vs Actual Product**7%
*“Worked as advertised”*
**Magnetic Strength/Adsorption**5%
*“Good magnetic hold”*
**Ease Of Use**5%
*“Its very convenient”*
**Efficiency**5%
*“performance is good”*
**Strength**2%
*“Excellent performance”*
**Assembly/Installation**2%
*“Easy to install”*
### **What buyers complain about **
**Durability**17%
*“Broke after a few uses”*
**Socket/Port/Plug**16%
*“The other ones connector receiver was bent over”*
**Magnetic Strength/Adsorption**15%
*“The magnet broke into pieces”*
**Quality-Overall**13%
*“not very happy with the quality of these cheap spark plugs”*
**Size-Overall**8%
*“Did not fit the spark plug on my yard machine lawnmower”*
**Value For Money**5%
*“Lowest quote for plugs and wires was $1,100”*
**Jamming/Clogging**4%
*“it would get stuck on spark plugs”*
**Flammable**4%
*“Caused misfires and issues”*
**Ease Of Use**4%
*“A few on drivers side are very difficult”*
**Metal Quality**4%
*“Its ok. It worked ok until the metal came off from the socket the piece the helps holds the spark plug to come out”*
### **Top return reasons **
**Size-Overall**41%
**Compatibility-Overall**12%
**Defective Material/Parts**9%
**Socket/Port/Plug**7%
**Value For Money**7%
**Functionality-Overall**4%
**Product Condition**4%
**Advertised Vs Actual Product**3%
**Magnetic Strength/Adsorption**3%
**Flammable**2%
## **Common questions**
- **Is 5.7 hemi spark plugs profitable to sell on Amazon United States?**
- The niche generates $91K/yr across 25 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is -0.9%. Flapen's verdict: Skip it (41/100).
- **How competitive is the 5.7 hemi spark plugs niche?**
- 18 brands and 39 sellers compete. The top 5 products take 57% of clicks and top 5 brands hold 73% of demand.
- **What do buyers complain about in 5.7 hemi spark plugs?**
- Top complaints mined from reviews: Durability, Socket/Port/Plug, Magnetic Strength/Adsorption. The return rate is 2.6%.
- **What does it cost to enter the 5.7 hemi spark plugs niche?**
- Listings span $9.23–$297.49; the average listing price is $116.82 (sweet spot $15–$100). The average incumbent carries 262 reviews — the moat a new listing must climb.
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