spark plug thread repair kit
Worth a lookShows a sweet-spot price point ($42.71 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Avg price
Incredible$42.71avg listing price — sweet spot $15–$100
Brand share
Great45%top-5 brand share — no brand owns this niche
Review moat
Great251.97avg incumbent reviews — the moat a new listing must climb
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Competition
Good43%top-5 click share — leaders hold, buyers still browse
Growth
Okay+19.9%90-day search growth — must beat 0% to launch
Price range
Okay$8.52–$203.09cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Okay3.8%return rate — above 6% kills the launch gate
Conversion
Okay3.1%search→purchase rate — share of searches ending in a sale
Market size
Okay$121K$121K/yr · 90K searches
Competition
The top 5 products take 43% of clicks — established leaders, but buyers still shop beyond them.Brands
34 rising
Sellers
108
Top-5 brand share
45%
Open market
49%
- MARKETTY11%
- NINEFOX11%
- CLLOMAGY9%
- Cal-Van Tools7%
- SHMZK7%
- XuYelora6%
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 36 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
MARKETTY 38900 Two Valve Ford Triton Tool Kit Foolproof Repair System Spark Plug Thread Repair Kit Compatible with 4.6L 5.4L and 6.8 V-10 Ford Triton Two Valve Engines (Black)
MARKETTY$65.574.6★223 rev
CLLOMAGY 38900 Two Valve Tool Kit for Ford Triton Spark Plug Thread Repair Kit Foolproof Spark Plug Repair System Compatible with Ford F150/250/350 E150/250/350 4.6L 5.4L 6.8L Two Valve Engine
CLLOMAGY$65.644.7★148 rev
NINEFOX Spark Plug Thread Repair Kit M14x1.25 11 PCS Insert and Tap Set 10 Inserts + 1 Tap for Cylinder Head Rethreading Cars Trucks Generators
NINEFOX$15.854.6★62 rev
CalVan Tools 38900 Two Valve Ford Triton Tool Kit - Foolproof Repair System Spark Plug Thread Repair Kit. Tools and Equipment
Cal-Van Tools$203.094.8★2,694 rev
SHMZK 11 PCS Spark Plug Thread Repair Kit M141.25 Inserts and M161.25 Tap Spark Plug Rethreading Set Stainless Steel Thread Repair Tool Kit for Automotive Gasoline Engines Generators
SHMZK$13.124.4★73 rev
Newest
by launch date
GEARCESS 38900 Two Valve Tool Kit for Ford Triton Spark Plug Repair Kit Spark Thread Plug Repair Kit Compatible with Ford F150/250/350 E150/250/350 4.6L 5.4L 6.8L Two Valve Engine
GEARCESS$77.822 rev
DEEFILL M14x1.25 Back-Tap Spark Plug Thread Repair Tool - Thread Chaser & Restorer for Stripped Spark Plug Holes No Head Removal Debris-Free Engine-Safe Design Fits 14mm Spark Plug Threads
DEEFILL$18.799 rev
KJE 38900 Two Valve Ford Triton Tool Kit Spark Plug Thread Repair Kit Compatible with Ford 4.6 L 5.4 L 6.8V-10 SOHC Engines Foolproof Repair System for No.389-100 Replacement Inserts 1/2 Drive
KJE$65.204 rev
SENNMONN M14x1.25 9.4mm&15mm Insert Qty 20 Spark Plug Thread Repair Kit Thread Repair Kit with Storage Case
SENNMONN$69.556 rev
Frandilo Spark Plug Thread Repair kit M10x1.0 Bolt M12x1.0 Tap Stainless Steel Repair kit for Automotive Engine Cylinder Head Rethreaded Kit Repairs Tools(Color:Silver)
Frandilo$14.176 rev
Trending
90-day click momentumGEARCESS 38900 Two Valve Tool Kit for Ford Triton Spark Plug Repair Kit Spark Thread Plug Repair Kit Compatible with Ford F150/250/350 E150/250/350 4.6L 5.4L 6.8L Two Valve Engine
GEARCESS$77.822.5★
KJE 38900 Two Valve Ford Triton Tool Kit Spark Plug Thread Repair Kit Compatible with Ford 4.6 L 5.4 L 6.8V-10 SOHC Engines Foolproof Repair System for No.389-100 Replacement Inserts 1/2 Drive
KJE$65.205.0★
BZBMGMO M10 X 1.0X12.7 Spark Plug Repair Short Tooling KIT Metric Thread Repair Kit Especially Suitable for Repairing Motorcycle UTV ATV and Snowmobile Spark Plug Repair
BZBMGMO$55.054.2★
DEEFILL M14x1.25 Back-Tap Spark Plug Thread Repair Tool - Thread Chaser & Restorer for Stripped Spark Plug Holes No Head Removal Debris-Free Engine-Safe Design Fits 14mm Spark Plug Threads
DEEFILL$18.794.3★
XuYelora Spark Plug Thread Repair kit M10x1.0 Bolt M12x1.0 Tap Stainless Steel Repair kit for Automotive Engine Cylinder Head Rethreaded Kit Repairs Tools(Color:Silver)
XuYelora$13.244.2★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +19.9% search growth over the last 90 days.Peak months: May · busiest ÷ quietest = 2.7×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Functions as advertised”
“Good quality set at a good price”
“Great price”
“Easy to use”
“Works well”
“Clear instructions and a quality tool”
“Everything fits perfectly”
“Good, solid set”
“These are very durable”
“Easy to use all needed accessories”
What buyers complain about
“Bad Quality”
“That cant even spell spark correctly on the box”
“no instructions”
“Broke within 5 minutes of use”
“Cheap material”
“Bad cheap metal it will make your car w I use”
“Thread reamer socket head is too big”
“Its cheaper in the long run”
“unusable after one use”
“a bit long”