---
title: "Lawn Mower Spark Plug — $51K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/patio-lawn-garden/lawn-mower-spark-plug"
last_updated: "2026-08-11T08:44:20.073Z"
locale: en
meta:
description: "Niche score 44/100 · $51K/yr market · 63K searches/yr · $8.47 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 44/100 · $51K/yr market · 63K searches/yr · $8.47 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Lawn Mower Spark Plug — $51K/yr Amazon US Niche (2026) - Flapen"
---
# **lawn mower spark plug**
**Skip it**
A small market ($51K/yr) — this niche doesn't clear our bar today.
Market size 13Growth 82Conversion 85Competition 14Returns 87Price range 26Avg price 24Brand share 25Review moat 64Quality gap 21
**Returns**
**Great****1.4%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****9.6%**
search→purchase rate — share of searches ending in a sale
**Growth**
**Great****+76.6%**
90-day search growth — must beat 0% to launch
**Review moat**
**Good****925.91**
avg incumbent reviews — the moat a new listing must climb
**Price range**
**Okay****$3.97–$18.82**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Okay****90%**
top-5 brand share — brands hold most of the demand
**Avg price**
**Bad****$8.47**
avg listing price — sweet spot $15–$100
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Competition**
**Bad****84%**
top-5 click share — a locked-up shelf
**Market size**
**Bad****$51K**
$51K/yr · 63K searches
According to Flapen's Amazon United States niche tracking, lawn mower spark plug is a $51K/yr Amazon United States market (63K searches/yr). The top 5 brands hold 90% of demand. Verdict: Skip it — 44/100.
Data updated Jul 16, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **lawn mower spark plug market data**
- **Units sold / yr**
- **5K–6K**
- avg 500–750/product
- **Revenue / yr**
- **$42K–$51K**
- units × avg price
- **Conversion rate**
- **9.6%**
- **Avg BSR**
- **#60**
- **Page quality**
- **0%**
- **Prime**
- **91%**
- **Sponsored**
- **82%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **46 months**
- **Avg seller age**
- **166 days**
## **Competition & brand share**
The top 5 products capture 84% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**9 **▼falling
**Sellers**
**40**
**Top-5 brand share**
**90%**
Top 20: 100%
**Top-5 click share**
**84%**
Top 20: 100%
**Open market**
**7%**
- Briggs & Stratton68% - KELKONG7% - Tecreddy6% - Harbot4% - Autolite Iridium Ultra4% - Butom3% - Open — no brand owns it (3 brands, 7%)
## **Demand**
Weekly Amazon search volume, last 11 weeks — +76.6% search growth over the last 90 days.
2K2KMay '26May '26May '26May '26May '26Jun '26Jun '26Jun '26Jun '26Jul '26Jul '26
[**Open Trend **](https://flapen.com/research/us/patio-lawn-garden/lawn-mower-spark-plug/trend)
## **Top lawn mower spark plug search terms**
- **lawn mower spark plug**18K/yr+113.9%4.6% conv. - **briggs and stratton spark plug**13K/yr+66.3%6.3% conv. - **lawnmower spark plug**7K/yr+89.8%4.4% conv. - **491055s**4K/yr+69.4%17.8% conv. - **lawn mower spark plugs**4K/yr+58.1%3.7% conv. - **spark plug for lawn mower**4K/yr+98.7%3.4% conv. - **491055s spark plug briggs and stratton**3K/yr+51.7%24.4% conv. - **small engine spark plugs**5K/yr+17.3%1.9% conv. - **spark plug for briggs and stratton**2K/yr+64.4%4.7% conv. - **491055s spark plug**2K/yr+33.9%22.4% conv. [**All search terms **](https://flapen.com/research/us/patio-lawn-garden/lawn-mower-spark-plug/search-terms)
## **Top lawn mower spark plug 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.
0%15%$8K30%$15K45%$23K60%$31K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 11 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Briggs & Stratton 491055S - 2 Pack**Briggs & Stratton**$6.75**4.7★2,944 rev](https://www.amazon.com/dp/B00GG1BVOQ) [2**Briggs & Stratton 796112-2pk Spark Plug (2 Pack) Replaces J19LM RJ19LM 802592 5095K by Briggs & Stratton**Briggs & Stratton**$7.30**4.7★1,562 rev](https://www.amazon.com/dp/B018WLL2KK) [3**593260 Air Filter with Pre Filter and Spark Plug Fits for B&S 725EX 625EX 575EX 550EX 525EXI Engines Air Filter Parts for Toro Recycler 22 and Troy Bilt Lawn Mower**KELKONG**$8.04**4.7★491 rev](https://www.amazon.com/dp/B0D874T2BR) [4**RC12YC Spark Plugs Compatible with Champion Briggs and Stratton 491055 491055S 692051 792015 491055T 5066 Kohler 25 132 12-S JD M78543 531308128 Lawn Mower Engine**Tecreddy**$10.00**4.6★299 rev](https://www.amazon.com/dp/B0CXHZB6KN) [5**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**$7.28**4.7★1,004 rev](https://www.amazon.com/dp/B07BVNX653)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Wetenex RC12YC Spark Plug for Brigg 491055T 491055S 491055 692051 792015 kohler 12 132 02-S Champion RC12YC Spark Plug (2 PACK)**Wetenex**$7.73**272 rev1y ago](https://www.amazon.com/dp/B0DSVH5784) [**593260 Air Filter with Pre Filter and Spark Plug Fits for B&S 725EX 625EX 575EX 550EX 525EXI Engines Air Filter Parts for Toro Recycler 22 and Troy Bilt Lawn Mower**KELKONG**$8.04**491 rev2y ago](https://www.amazon.com/dp/B0D874T2BR) [**RC12YC Spark Plugs Compatible with Champion Briggs and Stratton 491055 491055S 692051 792015 491055T 5066 Kohler 25 132 12-S JD M78543 531308128 Lawn Mower Engine**Tecreddy**$10.00**299 rev2y ago](https://www.amazon.com/dp/B0CXHZB6KN) [**RC12YC Spark Plug 491055 (Pack of 10) Fit for Briggs & Stratton Spark Plug Replace 491055S 491055T 72347GS 72347 805015 M78543**YIGUCS**$18.82**77 rev3y ago](https://www.amazon.com/dp/B0C6M1TY7B) [**OEM (Pack of 2) Champion Spark Plugs for Briggs & Stratton 491055 491055S 491055T**Champion**$9.12**252 rev5y ago](https://www.amazon.com/dp/B08T7NRYMZ)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Autolite Xtreme Start Iridium Lawn & Garden Spark Plug Automotive Replacement XST255DP**Autolite Iridium Ultra**$3.97**4.7★**▲ 57%**](https://www.amazon.com/dp/B001O0C6C0) [**Wetenex RC12YC Spark Plug for Brigg 491055T 491055S 491055 692051 792015 kohler 12 132 02-S Champion RC12YC Spark Plug (2 PACK)**Wetenex**$7.73**4.6★**▲ 42%**](https://www.amazon.com/dp/B0DSVH5784) [**Briggs & Stratton 796112-2pk Spark Plug (2 Pack) Replaces J19LM RJ19LM 802592 5095K by Briggs & Stratton**Briggs & Stratton**$7.30**4.7★**▲ 15%**](https://www.amazon.com/dp/B018WLL2KK) [**Briggs & Stratton 491055S Spark Plug**Briggs & Stratton**$4.75**4.7★**— 3%**](https://www.amazon.com/dp/B002WNT2JS) [**593260 Air Filter with Pre Filter and Spark Plug Fits for B&S 725EX 625EX 575EX 550EX 525EXI Engines Air Filter Parts for Toro Recycler 22 and Troy Bilt Lawn Mower**KELKONG**$8.04**4.7★**— 1%**](https://www.amazon.com/dp/B0D874T2BR)
**~~View all trending →~~**
## **What buyers say about lawn mower spark plug**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**21%
*“Great and easy transaction and quality is great”*
**Size-Overall**20%
*“Exact fit”*
**Socket/Port/Plug**15%
*“Plugs work great”*
**Advertised Vs Actual Product**15%
*“As Advertised”*
**Value For Money**14%
*“Good price”*
**Assembly/Installation**3%
*“Easy install”*
**Filtration**3%
*“Great filter at great price”*
**Efficiency**2%
*“it does run fine”*
**Maintenance And Repair**2%
*“Solid value for a simple maintenance item”*
**Motor Power**1%
*“My old Briggs motor purrs”*
### **What buyers complain about **
**Quality-Overall**15%
*“Cheap”*
**Socket/Port/Plug**15%
*“Horrible spark plugs”*
**Advertised Vs Actual Product**13%
*“Didn't read the full description”*
**Size-Overall**10%
*“Did not fit my mower”*
**Functionality-Overall**8%
*“After installing in my lawnmower it would not run”*
**Maintenance And Repair**7%
*“That makes maintenance frustrating”*
**Drop/Impact Protection**5%
*“No protection”*
**Value For Money**5%
*“Spark plugs, just expensive”*
**Natural Resource Wastage**5%
*“Total waste of money”*
**Product Condition**3%
*“The items are now being used weekly”*
### **Top return reasons **
**Size-Overall**60%
**Advertised Vs Actual Product**16%
**Functionality-Overall**5%
**Defective Material/Parts**4%
**Value For Money**4%
**Compatibility-Overall**3%
**Filtration**3%
**Socket/Port/Plug**2%
**Quality-Overall**1%
**Motor Issues**0%
## **Common questions**
- **Is lawn mower spark plug profitable to sell on Amazon United States?**
- The niche generates $51K/yr across 11 tracked products. 90-day search growth is +76.6%. Flapen's verdict: Skip it (44/100).
- **How competitive is the lawn mower spark plug niche?**
- 9 brands and 40 sellers compete. The top 5 products take 84% of clicks and top 5 brands hold 90% of demand.
- **What do buyers complain about in lawn mower spark plug?**
- Top complaints mined from reviews: Quality-Overall, Socket/Port/Plug, Advertised Vs Actual Product. The return rate is 1.4%.
- **What does it cost to enter the lawn mower spark plug niche?**
- Listings span $3.97–$18.82; the average listing price is $8.47 (sweet spot $15–$100). The average incumbent carries 926 reviews — the moat a new listing must climb.
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