rc12yx champion spark plug
Worth a lookShows searches that convert (19.9% search→purchase), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Conversion
Incredible19.9%search→purchase rate — share of searches ending in a sale
Returns
Great1.4%return rate — above 6% kills the launch gate
Growth
Great+83.8%90-day search growth — must beat 0% to launch
Price range
Great$3.91–$58.51cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Good$676K$676K/yr · 284K searches
Avg price
Good$12.00avg listing price — sweet spot $15–$100
Review moat
Okay1,630.56avg incumbent reviews — the moat a new listing must climb
Competition
Bad71%top-5 click share — a locked-up shelf
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Brand share
Bad96%top-5 brand share — brand-locked demand
Competition
The top 5 products capture 71% of clicks — a locked-up shelf that new listings rarely crack.Brands
8 rising
Sellers
74
Top-5 brand share
96%
Open market
3%
- Champion67%
- Wetenex9%
- Harbot9%
- Butom8%
- JSIERLUOV3%
- Briggs & Stratton2%
- Open — no brand owns it (2 brands, 3%)
Product shelf
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 16 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Champion Spark Plug for Craftsman (2 Pack) # 71G RC12YC-2pk
Champion$8.654.7★3,614 rev
(Pack of 2) Champion Spark Plugs for John Deere M78543 M87543 RC12YC Engine
Champion$8.664.8★1,263 rev
Wetenex RC12YC Spark Plug for Brigg 491055T 491055S 491055 692051 792015 kohler 12 132 02-S Champion RC12YC Spark Plug (2 PACK)
Wetenex$7.734.6★265 rev
GENUINE CHAMPION SPARK PLUGS - RC12YC SPARK PLUG (PREM PLUG IS 2071) 515312
Champion$9.464.7★317 rev
Harbot RC12YC Spark Plug for BS 491055 491055S 491055T 792015 692051 694385 759-3336 John Deere M78543 M87543 Kohler 12 132 02 (Pack of 2)
Harbot$7.284.7★990 rev
Newest
by launch date
JSIERLUOV RC12YC BKR5E Spark Plugs for MTD 759-3336 Champion Briggs 491055S 692051 792015 kohler 12 132 02-S John Deere M78543 M8754 Autolite 3924 Spark Plug (4 Pack)
JSIERLUOV$8.9136 rev
2 Pack RC12YC Spark Plug for Briggs and Stratton 491055S 491055T 491055 692051 792015 for Kohler 12 132 02-S for Champion RC12YC Spark Plugs
YUEARN$7.6082 rev
Wetenex RC12YC Spark Plug for Brigg 491055T 491055S 491055 692051 792015 kohler 12 132 02-S Champion RC12YC Spark Plug (2 PACK)
Wetenex$7.73265 rev
(Pack of 2) Champion Spark Plugs for John Deere M78543 M87543 RC12YC Engine
Champion$8.661,263 rev
RC12YC Spark Plug for BS 491055 491055S 692051 792015 5066 Kohler 25 132 12-S M78543Pack of 4
Butom$9.391,300 rev
Trending
90-day click momentumJSIERLUOV RC12YC BKR5E Spark Plugs for MTD 759-3336 Champion Briggs 491055S 692051 792015 kohler 12 132 02-S John Deere M78543 M8754 Autolite 3924 Spark Plug (4 Pack)
JSIERLUOV$8.914.7★
GENUINE CHAMPION SPARK PLUGS - RC12YC SPARK PLUG (PREM PLUG IS 2071) 515312
Champion$9.464.7★
Champion Copper Plus 71 (RC12YC) Pack of 4 (UPC 037551500147) for 1984-2020 Toyota Corolla
Champion$11.784.8★
MAXPOWER 334058 Spark Plug For Riding Mowers NGK BKR5E Champion RC12YC Autolite 3924
Maxpower$5.014.7★
(Pack of 2) Champion Spark Plugs for John Deere M78543 M87543 RC12YC Engine
Champion$8.664.8★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +83.8% search growth over the last 90 days.Peak months: Apr, May, Jun · busiest ÷ quietest = 43.0×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Very good quality arrived on time as described”
“Plugs work well”
“As advertised”
“Good price”
“Correct size”
“Works perfectly”
“Easy to install”
“This is the exact replacement item”
“Solid replacement parts for small motors”
“Sparky”
What buyers complain about
“Horrible spark plugs”
“are a smidge too long”
“Junk”
“Didn't read the full description”
“Spark plugs, just expensive”
“known to cause backfires in generators”
“Total waste of money”
“One was used”
“Mower is dead after installation”
“No protection”