Harley Davidson Spark Plugs
FailShoppers spend an estimated $78K a year here, so Harley Davidson Spark Plugs is a Fail.
- Flapen Score
- 49 / 100Ranks 3,500 of 7,287 Automotive niches · on the category median49
- Market size
- $78K/yr71K searches / yr
- 90-day growth
- +42.4%search demand this quarter
- Competition
- 73%top-5 click share · 8 brands · 51 sellers
Flapen Score
Harley Davidson Spark Plugs against its category
The dotted line is the Automotive average. Past it, Harley Davidson Spark Plugs is stronger. Inside it, weaker.
Market
The Harley Davidson Spark Plugs market on Amazon at a glance
Shoppers on Amazon United States searched for Harley Davidson Spark Plugs 71K times last year and spent an estimated $78K. The top 5 brands take 93% of clicks. Flapen scores it 49 out of 100, a Fail.
01 · Demand
An estimated 5.8% of those searches ended in a purchase.
Shoppers searched for this 71K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 5.8% of those searches ended in a purchase. Searches in the last 90 days moved +42.4% against the 90 days before. Searches, conversion and average price together put the market at an estimated $78K a year.
- Searches, last 12 months
- 71K
- Growth, 90 days vs prior 90
- +42.4%
- Conversion, latest week
- 5.8%
- Market size, estimated
- $78Ka year
- Top search term
- ngk dcpr7e8K searches a year
02 · Price
A sale here is worth $18.88.
Listings sell for $18.88 on average, from $6.55 to $38.94. Amazon reports units sold in ranges. This niche sold 4K to 5K a year. The average listing sells 100 to 250 of them. At $18.88 that is $2K to $5K a year per listing.
- Average price
- $18.88inside the $15 to $100 sweet spot
- Price range
- $6.55–$38.94
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 4K–5K
- Units per listing a year
- 100–250
- Revenue per listing a year
- $2K–$5K
- Returns
- 1.7%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is low.
79% of listings pay for placement with sponsored ads. 86% ship with Prime. On an average day, 1.1% of listings are out of stock. The average listing ranks #852 within Ignition Parts. It carries 612 reviews at 4.48 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 79%
- Prime listings
- 86%
- Out of stock, average day
- 1.1%
- Average rank
- #852in Ignition Parts
- Average rating
- 4.48 starsAmazon United States average 4.42 stars
- Average reviews
- 612per listing
- Listings tracked
- 14
04 · Newcomers
Brands here are settling in.
The brands on the shelf have sold for 48 months on average, so the names here are settling in.
- Launched, last 12 months
- 0
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 48 months
Products
Top Harley Davidson Spark Plugs products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 11, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
NGK Iridium IX DCPR7EIX Spark Plugs Compatible with 1999-2016 Harley Davidson Twin Cam (Pair)
- Price
- $20.62
- Rating
- 4.7/5
- Reviews
- 4,931
- Age
- 12y ago

NGK DCPR7EIX Spark Plug (2 Pack)
- Price
- $22.00
- Rating
- 4.7/5
- Reviews
- 1,499
- Age
- 12y ago

V-Twin Performance Spark Plugs Replaces Harley spark plug #6R12.
- Price
- $25.38
- Rating
- 4.6/5
- Reviews
- 59
- Age
- 7y ago

NGK # 6046 Iridium Spark Plugs -- DCPR7EIX -- Compatible with Harley-Davidson Twin Cam and XL --- 4 PCS NEW
- Price
- $38.94
- Rating
- 4.6/5
- Reviews
- 282
- Age
- 11y ago

NGK (3932) DCPR7E Spark Plug - Pack of 4
- Price
- $23.33
- Rating
- 4.6/5
- Reviews
- 259
- Age
- 13y ago
Trending
estimated 90-day click momentum
NGK Genuine DCPR7E Spark Plug
- Price
- $15.53
- Rating
- 3.8/5
- Reviews
- 36
- Age
- 10y ago

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
- Price
- $18.44
- Rating
- 4.3/5
- Reviews
- 39
- Age
- 3y ago

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
- Price
- $22.67
- Rating
- 4.6/5
- Reviews
- 53
- Age
- 3y ago

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
- Price
- $12.95
- Rating
- 4.5/5
- Reviews
- 329
- Age
- 1y ago

NGK # 6046 Iridium Spark Plugs -- DCPR7EIX -- Compatible with Harley-Davidson Twin Cam and XL --- 4 PCS NEW
- Price
- $38.94
- Rating
- 4.6/5
- Reviews
- 282
- Age
- 11y ago
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
- Price
- $12.95
- Rating
- 4.5/5
- Reviews
- 329
- Age
- 1y ago

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)
- Price
- $17.79
- Rating
- 4.3/5
- Reviews
- 47
- Age
- 1y ago

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
- Price
- $22.67
- Rating
- 4.6/5
- Reviews
- 53
- Age
- 3y ago

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
- Price
- $18.44
- Rating
- 4.3/5
- Reviews
- 39
- Age
- 3y ago

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
- Price
- $6.55
- Rating
- 4.7/5
- Reviews
- 70
- Age
- 4y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 73% of clicks. A locked shelf that new listings rarely crack.
Brands
8 falling
Sellers
51
Est. top-5 brand share
93%
Top 20: 100%
Est. 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
Harley Davidson Spark Plugs search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Apr, May, Jun · busiest ÷ quietest = 4.2× · 9 of 12 months tracked
Search terms
Top Harley Davidson Spark Plugs search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- 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
Reviews and returns
What reviews say buyers love and hate about Harley Davidson Spark Plugs
We read the reviews and the return reasons for every product selling here.
“not listed right”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
14 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Harley Davidson Spark Plugs questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









