knock sensor
Worth a lookShows a sweet-spot price point ($28.15 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Avg price
Incredible$28.15avg listing price — sweet spot $15–$100
Competition
Great25%top-5 click share — an open shelf
Review moat
Great199.16avg incumbent reviews — the moat a new listing must climb
Brand share
Great52%top-5 brand share — no brand owns this niche
Quality gap
Great4.2★avg incumbent rating — lower means beatable quality
Price range
Good$8.18–$153.94cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Good$356K$356K/yr · 337K searches
Conversion
Okay3.8%search→purchase rate — share of searches ending in a sale
Returns
Okay4.7%return rate — above 5% kills the launch gate
Growth
Bad-10.3%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, knock sensor is a $356K/yr Amazon United States market (337K searches/yr). The top 5 brands hold 52% of demand. Verdict: Worth a look — 61/100.
Data updated Jul 11, 2026 · scored weekly · How we score niches
knock sensor market data
- Units sold / yr
- 15K–20K
- avg 100–250/product
- Revenue / yr
- $422K–$563K
- units × avg price
- Conversion rate
- 3.8%
- Avg BSR
- #127
- Page quality
- 0%
- Prime
- 99%
- Sponsored
- 73%
- Out of stock
- 3.7%
- Avg brand age
- 51 months
- Avg seller age
- 156 days
Competition & brand share
Clicks spread well past the top 5 (25% combined) — an open shelf where new products get seen.Brands
43 falling
Sellers
142
Top-5 brand share
52%
Top 20: 86%
Top-5 click share
25%
Top 20: 56%
Open market
42%
- GM GENUINE PARTS14%
- A-Premium12%
- Gledewen10%
- Dorman8%
- Delphi7%
- TRQ5%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -10.3% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.4×
Top knock sensor search terms
- knock sensor244K/yr
- knock sensor harness24K/yr
- knock sensor kit21K/yr
- knock sensors10K/yr
- gm genuine knock sensor4K/yr
- automotive replacement detonation sensors4K/yr
- oem knock sensor5K/yr
- sensor de detonacin5K/yr
- ls knock sensor4K/yr
- knock sensors 5.34K/yr
Top knock sensor 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
GM Genuine Parts 213-3521 (12589867) Ignition Knock (Detonation) Sensor
GM GENUINE PARTS$54.974.4★2,253 rev
Dual Knock Sensors with Wiring Harness Kit | Knock Sensor 5.3 for Chevy Suburban Silverado Avalanche Tahoe GMC Sierra Yukon Cadillac Hummer & More GM Vehicles | Replace# 12601822 12589867 917-033
Gledewen$22.093.6★1,657 rev
GM Genuine Parts 213-1576 (12623730) Ignition Knock (Detonation) Sensor
GM GENUINE PARTS$13.584.7★734 rev
Delphi AS10017 Ignition Knock (Detonation) Sensor
Delphi$37.734.0★619 rev
30530-PPL-A01 Ignition Knock Detonation Sensor for Honda Accord Civic CR-V/CRV Element & Acura RDX RSX TSX Replace 158-0917 30530PPLA01 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
RICHWEI$16.564.2★196 rev
Newest
by launch date
A-Premium Ignition Knock Detonation Sensor Compatible with Hyundai & Kia Vehicles - Santa Fe 2010-2012 2019-2020 Sonata 2007-2019 Tucson Forte Optima Sorento Sportage & More Replace# 392502G100
A-Premium$20.8117 rev
HiSport 89615-B6010 Knock Sensor and Harness Kit - Compatible with Toyota Corolla FJ Cruiser Highlander Matrix Sequoia Sienna Avalon Camry Land RAV4 Tacoma Venza Yaris 4Runner Tundra Solara
HiSport$24.6652 rev
Knock Sensors Wiring Harness and Intake Manifold Gasket Kit for Chevy Suburban Silverado Avalanche Tahoe GMC Sierra Yukon for Cadillac & More GM Vehicles | Replace# 12601822 12589867 917-033
JOYOJUMA$31.39137 rev
Gseigvee 1 PC Car Knock Sensors ABS Sensor Replacement Number 22060-7B000 220607B000 KS107 2 Pin Plug and Play Ignition Knock Sensor Standard Accessories Compatible with Most Cars (Black)
Gseigvee$15.2338 rev
Dual Knock Sensors with Wiring Harness and Intake Manifold Gasket Kit | for Chevy Silverado Avalanche Tahoe GMC Sierra Yukon Cadillac Hummer & More GM Vehicles | Replace# 12601822 213-3521 89060413
Gledewen$33.89251 rev
Trending
90-day click momentum
Dorman 926-084 Knock Sensor And Harness Kit Compatible with Select Models
Dorman$59.143.6★
30530-PPL-A01 Ignition Knock Detonation Sensor for Honda Accord Civic CR-V/CRV Element & Acura RDX RSX TSX Replace 158-0917 30530PPLA01 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
RICHWEI$16.564.2★
A-Premium Ignition Knock Detonation Sensor Compatible with Hyundai & Kia Vehicles - Santa Fe 2010-2012 2019-2020 Sonata 2007-2019 Tucson Forte Optima Sorento Sportage & More Replace# 392502G100
A-Premium$20.814.5★
GM Genuine Parts 12729597 Knock Sensor
GM GENUINE PARTS$21.944.8★
Beck/Arnley 158-1017 Knock Sensor
Beck/Arnley$76.724.4★
What buyers say about knock sensor
What buyers praise and complain about, mined from review topics.What buyers love
“Awesome fit”
“Affordable quality”
“Works as it should”
“Excellent price”
“Easy to install”
“Perfectly functional”
“this thing corrected my problem”
“Durable like it should be”
“It had the correct part number on it”
“No more leaks”
What buyers complain about
“Faulty sensor”
“Bad quality”
“Will break”
“Didn't work out of box”
“States it didnt fit my vehicle”
“Part did not work”
“is difficult to install”
“Won't fit”
“Wasn't good connection cut 2 new ones in”
“with the high price of gas”
Top return reasons
Common questions
- Is knock sensor profitable to sell on Amazon United States?
- The niche generates $356K/yr across 99 tracked products. 0 of 5 products launched in the last 360 days are still selling. 90-day search growth is -10.3%. Flapen's verdict: Worth a look (61/100).
- How competitive is the knock sensor niche?
- 43 brands and 142 sellers compete. The top 5 products take 25% of clicks and top 5 brands hold 52% of demand.
- What do buyers complain about in knock sensor?
- Top complaints mined from reviews: Sensor, Quality-Overall, Durability. The return rate is 4.7%.
- When does demand for knock sensor peak?
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- What does it cost to enter the knock sensor niche?
- Listings span $8.18–$153.94; the average listing price is $28.15 (sweet spot $15–$100). The average incumbent carries 199 reviews — the moat a new listing must climb.