5.7 hemi spark plugs
Skip itWeak search conversion (1.7%) — this niche doesn't clear our bar today.
Review moat
Great262.04avg incumbent reviews — the moat a new listing must climb
Avg price
Good$116.82avg listing price — sweet spot $15–$100
Returns
Good2.6%return rate — above 5% kills the launch gate
Brand share
Good73%top-5 brand share — brands hold most of the demand
Competition
Okay57%top-5 click share — leaders hold, buyers still browse
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Price range
Okay$9.23–$297.49cheapest 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
Bad1.7%search→purchase rate — share of searches ending in a sale
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
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.Top 5.7 hemi spark plugs search terms
- 5.7 hemi spark plugs30K/yr
- mopar hemi spark plugs7K/yr
- ram 1500 spark plugs4K/yr
- ram spark plugs 5.7 hemi4K/yr
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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
16 pc NGK Iridium IX Spark Plugs compatible with Ram 1500 5.7L V8 2011-2024 HEMI V8 truck
Sixity Auto$154.624.7★557 rev
NGK Set of 16 Iridium IX Spark Plugs For Chrysler Dodge Jeep Ram 5.7 6.4 V8
Newparts$164.274.7★204 rev
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$126.494.3★331 rev
16 pc Champion Copper Plus Spark Plugs compatible with Ram 1500 5.7L V8 2011-2024 HEMI V8 truck
Sixity Auto$56.654.6★384 rev
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$160.874.4★467 rev
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$123.061 rev
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$158.9469 rev
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$119.3526 rev
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$160.87467 rev
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$165.9920 rev
Trending
90-day click momentumUF504 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$123.065.0★
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$158.944.5★
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$126.494.3★
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$160.874.4★
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$46.534.4★
What buyers say about 5.7 hemi spark plugs
What buyers praise and complain about, mined from review topics.What buyers love
“Very nice, good quality tool”
“Worth it”
“Good socket”
“Good fit”
“Worked as advertised”
“Good magnetic hold”
“Its very convenient”
“performance is good”
“Excellent performance”
“Easy to install”
What buyers complain about
“Broke after a few uses”
“The other ones connector receiver was bent over”
“The magnet broke into pieces”
“not very happy with the quality of these cheap spark plugs”
“Did not fit the spark plug on my yard machine lawnmower”
“Lowest quote for plugs and wires was $1,100”
“it would get stuck on spark plugs”
“Caused misfires and issues”
“A few on drivers side are very difficult”
“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
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.