harley davidson spark plugs
Skip itA small market ($78K/yr) — this niche doesn't clear our bar today.
Avg price
Great$18.88avg listing price — sweet spot $15–$100
Returns
Great1.7%return rate — above 5% kills the launch gate
Price range
Good$6.55–$38.94cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Good612.07avg incumbent reviews — the moat a new listing must climb
Conversion
Good5.8%search→purchase rate — share of searches ending in a sale
Growth
Good+42.4%90-day search growth — must beat 0% to launch
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Competition
Bad73%top-5 click share — a locked-up shelf
Market size
Bad$78K$78K/yr · 71K searches
Brand share
Bad93%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, harley davidson spark plugs is a $78K/yr Amazon United States market (71K searches/yr). The top 5 brands hold 93% of demand. Verdict: Skip it — 49/100.
Data updated Jul 11, 2026 · scored weekly · How we score niches
harley davidson spark plugs market data
- Units sold / yr
- 4K–5K
- avg 100–250/product
- Revenue / yr
- $76K–$94K
- units × avg price
- Conversion rate
- 5.8%
- Avg BSR
- #852
- Page quality
- 0%
- Prime
- 86%
- Sponsored
- 79%
- Out of stock
- 1.1%
- Avg brand age
- 48 months
- Avg seller age
- 169 days
Competition & brand share
The top 5 products capture 73% of clicks — a locked-up shelf that new listings rarely crack.Brands
8 falling
Sellers
51
Top-5 brand share
93%
Top 20: 100%
Top-5 click share
73%
Top 20: 100%
Open market
4%
- NGK71%
- V-Twin9%
- TORCH5%
- CNPAPC4%
- Motoforti4%
- Atesilor3%
- Open — no brand owns it (2 brands, 4%)
Demand
Weekly Amazon search volume, last 40 weeks — +42.4% search growth over the last 90 days.Top harley davidson spark plugs search terms
- ngk dcpr7e8K/yr
- harley spark plug wires9K/yr
- harley davidson spark plugs8K/yr
- 6r12 spark plug harley davidson5K/yr
- harley davidson spark plug wires5K/yr
- motorcycle spark plugs5K/yr
- ngk dcpr7eix4K/yr
- dcpr7eix4K/yr
- harley spark plugs5K/yr
- screaming eagle spark plug wires4K/yr
Top harley davidson 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 14 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
NGK Iridium IX DCPR7EIX Spark Plugs Compatible with 1999-2016 Harley Davidson Twin Cam (Pair)
NGK$20.624.7★4,931 rev
NGK DCPR7EIX Spark Plug (2 Pack)
NGK$22.004.7★1,499 rev
V-Twin Performance Spark Plugs Replaces Harley spark plug #6R12.
V-Twin$25.384.6★59 rev
NGK # 6046 Iridium Spark Plugs -- DCPR7EIX -- Compatible with Harley-Davidson Twin Cam and XL --- 4 PCS NEW
NGK$38.944.6★282 rev
NGK (3932) DCPR7E Spark Plug - Pack of 4
NGK$23.334.6★259 rev
Newest
by launch date
SYKRSS DCPR7EIX Iridium Spark Plugs 2 Pack - Compatible with Fiat 500 2012-2017 1.4L L4 Chevy Spark 2013-2015 1.2L L4 Engine - Replaces 97637 6046 Spark Plug
SYKRSS$12.95329 rev
Atesilor 10.4mm Spark Plug Wires Ignition Coil Wires Compatible with Harley-Davidson Big Twin Dyna Super Glide/Wide Glide/Low Rider 2000-2017 & Softail Springer/Slim/Deluxe/Deuce 1999-2017 (Black)
Atesilor$17.7947 rev
TORCH 4pcs DK7RIU Iridium Spark Plugs Replace for NGK DCPR7E for BOSCH YR7DC+ Spark Plug for CHAMPION RA8HC/T04 for DENSO XU22EPR-U/3179/XU22EPR Spark Plug OEM
TORCH$22.6753 rev
BDFHYK Set of 4 Iridium Spark Plug Compatible with Harley-Davidson 1988-2016 Sportster 1200 1986-2016 Sportster 883 Engine Replacement for DCPR7EIX 6046 9701 97637
BDFHYK$18.4439 rev
TORCH DK7RTC Spark Plug Replace for NGK DCPR7E Spark Plug for BOSCH YR7DC+ Spark Plug for CHAMPION 809/8809/OE083/RA6HC/RA8HC Spark Plug for DENSO IXU22/VXU22/XU22EPR-U/XU22TT Spark Plug OEM ea
TORCH$6.5570 rev
Trending
90-day click momentum
NGK Genuine DCPR7E Spark Plug
NGK$15.533.8★
BDFHYK Set of 4 Iridium Spark Plug Compatible with Harley-Davidson 1988-2016 Sportster 1200 1986-2016 Sportster 883 Engine Replacement for DCPR7EIX 6046 9701 97637
BDFHYK$18.444.3★
TORCH 4pcs DK7RIU Iridium Spark Plugs Replace for NGK DCPR7E for BOSCH YR7DC+ Spark Plug for CHAMPION RA8HC/T04 for DENSO XU22EPR-U/3179/XU22EPR Spark Plug OEM
TORCH$22.674.6★
SYKRSS DCPR7EIX Iridium Spark Plugs 2 Pack - Compatible with Fiat 500 2012-2017 1.4L L4 Chevy Spark 2013-2015 1.2L L4 Engine - Replaces 97637 6046 Spark Plug
SYKRSS$12.954.5★
NGK # 6046 Iridium Spark Plugs -- DCPR7EIX -- Compatible with Harley-Davidson Twin Cam and XL --- 4 PCS NEW
NGK$38.944.6★
What buyers say about harley davidson spark plugs
What buyers praise and complain about, mined from review topics.What buyers love
“Quality Products”
“Plugs great”
“Excellent price”
“good fit”
“Works as it should”
“Did the job”
“040 so it's good to know these are as durable as they're advertised to be”
“Ease of use”
“they where easy to install yes you do need to gap them”
What buyers complain about
“not listed right”
“The longer wire was a bit long”
“Not compatible with older Harley models that it ought to fit”
“why not make a good product”
“The plug end that goes in the solenoid is too small”
Top return reasons
Common questions
- Is harley davidson spark plugs profitable to sell on Amazon United States?
- The niche generates $78K/yr across 14 tracked products. 90-day search growth is +42.4%. Flapen's verdict: Skip it (49/100).
- How competitive is the harley davidson spark plugs niche?
- 8 brands and 51 sellers compete. The top 5 products take 73% of clicks and top 5 brands hold 93% of demand.
- What do buyers complain about in harley davidson spark plugs?
- Top complaints mined from reviews: Advertised Vs Actual Product, Size-Overall, Compatibility-Overall. The return rate is 1.7%.
- What does it cost to enter the harley davidson spark plugs niche?
- Listings span $6.55–$38.94; the average listing price is $18.88 (sweet spot $15–$100). The average incumbent carries 612 reviews — the moat a new listing must climb.