---
title: "Prop Wrench — $5K/mo Amazon US Product Research (2026)"
canonical_url: "https://flapen.com/research/us/sports-outdoors/prop-wrench"
last_updated: "2026-08-12T09:38:47.438Z"
locale: en
meta:
description: "Amazon product research for prop wrench: $5K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for prop wrench: $5K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Prop Wrench — $5K/mo Amazon US Product Research (2026)"
---
# **Prop Wrench**
**Worth a look**
Shows a thin review moat (102 avg reviews), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 15Growth 88Conversion 94Competition 23Returns 84Price range 76Avg price 79Brand share 33Review moat 95Quality gap 63
**Review moat**
**Great****102**
avg incumbent reviews — the moat a new listing must climb
**Conversion**
**Great****11.8%**
search→purchase rate — share of searches ending in a sale
**Growth**
**Great****+91.6%**
90-day search growth — must beat 0% to launch
**Returns**
**Great****1.5%**
return rate — above 5% kills the launch gate
**Avg price**
**Great****$16.71**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$12.77–$21.96**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Okay****85%**
top-5 brand share — brands hold most of the demand
**Competition**
**Bad****72%**
top-5 click share — a locked-up shelf
**Market size**
**Bad****$59K**
$59K/yr · 30K searches
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500")
## **Is prop wrench profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, prop wrench is a $59K/yr Amazon United States market (30K searches/yr). The top 5 brands hold 85% of demand. Demand peaks in May–Jun–Jul–Aug. Verdict: Worth a look — 59/100.
Data updated Jul 24, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **prop wrench market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **3K–4K**
- avg 100–250/product
- **Revenue / yr**
- **$50K–$67K**
- units × avg price
- **Conversion rate**
- **11.8%**
- **Avg BSR**
- **#228**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **92%**
- **Out of stock**
- **1.1%**
- **Avg brand age**
- **64 months**
- **Avg seller age**
- **183 days**
## **Competition: brands, sellers & click share**
The top 5 products capture 72% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**8 **—flat
**Sellers**
**65**
**Top-5 brand share**
**85%**
Top 20: 100%
**Top-5 click share**
**72%**
Top 20: 100%
**Open market**
**8%**
- Bonbo34% - Yoursme18% - FullMayPro14% - attwood10% - Camoo9% - Sporthfish6% - Open — no brand owns it (2 brands, 8%)
## **prop wrench demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +91.6% search growth over the last 90 days.
1K600Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: May, Jun, Jul, Aug · busiest ÷ quietest = 4.3×
[**Open Trend **](https://flapen.com/research/us/sports-outdoors/prop-wrench/trend)
## **Top prop wrench search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **prop wrench**13K/yr+93.3%8.8% conv. - **prop wrench mercury**7K/yr+96.0%13.9% conv. - **boat prop wrench**3K/yr+93.3%10.1% conv. - **propeller wrench**3K/yr+116.5%9.4% conv. - **mercury prop wrench**3K/yr+56.2%14.6% conv. [**All search terms **](https://flapen.com/research/us/sports-outdoors/prop-wrench/search-terms)
## **Top prop wrench products & what they sell for**
Every tracked product — its share of the shelf, its review moat, and what it sells for.
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%10%$6K20%$12K30%$18K40%$24K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted
All 13 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**For Marine Boat Prop 1-1/16 Polymer Propeller Wrench 91-859046Q4 & PMPS-1-DP Prop Stop Block - Works for Mercury Mercruiser Alpha Fits all Outboard & Stern Drive Applications (Light-Weight Yellow)**Bonbo**$19.83**4.8★49 rev](https://www.amazon.com/dp/B0FK4Z9LDN) [2**1-1/16 Boat Prop Wrench & PMPS-1-DP Prop Stop Block Kit 91-859046Q4 Polymer Propeller Wrench - Works for Mercury Mercruiser Alpha Fits All Outboard & Stern Drive Applications Light-Weight Yellow**Yoursme**$20.24**4.6★50 rev](https://www.amazon.com/dp/B0F1FT6GD9) [3**Attwood 11370-7 Universal Prop Wrench Kit with Multiple Sockets**attwood**$16.79**4.3★420 rev](https://www.amazon.com/dp/B019EKVKSC) [4**Camoo Polymer Propeller Wrench 1-1/16 Nut Wrench for Mercury OMC Mercruiser Alpha Johnson Evinrude 40HP & UP Replaces 91-859046Q4 Light Weight Yellow Rustproof Plastic (27mm)**Camoo**$13.50**4.4★330 rev](https://www.amazon.com/dp/B08VN229N4) [5**Sporthfish Prop Wrench 91-859046Q4 Propeller Wrench for 1 1/16 Inches Nuts for Mercury Mercruiser Alpha Outboards Stern Drives Pontoon Sport and Fishing Boat 27mm Yellow Plastic Rustroof Ergonomics**Sporthfish**$13.45**3.5★4 rev](https://www.amazon.com/dp/B0GC3J2HKS)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**FullMayPro Floating Polymer Propeller Wrench 1-1/16 Marine Boat Nut Propeller Wrench for Mercury/OMC/Mercruiser/Alpha Replaces 91-859046Q4 Light Weight Rustproof Plastic Yellow(27mm)**FullMayPro**$12.80**0 rev4mo ago](https://www.amazon.com/dp/B0GT4SKJB8) [**FullMayPro Polymer Propeller Wrench 1-1/16 Marine Boat Nut Propeller Wrench for Mercury/OMC/Mercruiser/Alpha Replaces 91-859046Q4 Light Weight Rustproof Plastic Red(27mm)**FullMayPro**$12.77**12 rev4mo ago](https://www.amazon.com/dp/B0GT4FW15P) [**FASWORX Floating Propeller Wrench 1-1/16 (27mm) - Fits MerCruiser Alpha/Bravo Yamaha Honda Suzuki Volvo Penta - Replaces 91-859046Q4 859046T4 Sierra 18-4459 - Yellow**FASWORX**$13.96**6 rev4mo ago](https://www.amazon.com/dp/B0GT7RWWM4) [**Floating Marine Boat Prop 1-1/16 Polymer Propeller Wrench & Prop Stop Propeller Stop Fit Mercury/Mercruiser/OMC for All Outboard & Stern Drive Applications Light-Weight Rustproof Plastic Yellow**FullMayPro**$19.71**36 rev6mo ago](https://www.amazon.com/dp/B0GH8DDK8X) [**Polymer Propeller Wrench 1-1/16 Nut Wrench & Prop Stop Propeller Stop Fit Mercury/Mercruiser/OMC Marine Boat Prop for All Outboard & Stern Drive Applications Light-Weight Rustproof Plastic Red(27mm)**FullMayPro**$19.64**36 rev6mo ago](https://www.amazon.com/dp/B0GH872G26)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**FullMayPro Floating Polymer Propeller Wrench 1-1/16 Marine Boat Nut Propeller Wrench for Mercury/OMC/Mercruiser/Alpha Replaces 91-859046Q4 Light Weight Rustproof Plastic Yellow(27mm)**FullMayPro**$12.80**0.0★**▲ 134%**](https://www.amazon.com/dp/B0GT4SKJB8) [**FullMayPro Polymer Propeller Wrench 1-1/16 Marine Boat Nut Propeller Wrench for Mercury/OMC/Mercruiser/Alpha Replaces 91-859046Q4 Light Weight Rustproof Plastic Red(27mm)**FullMayPro**$12.77**4.8★**▲ 133%**](https://www.amazon.com/dp/B0GT4FW15P) [**FASWORX Floating Propeller Wrench 1-1/16 (27mm) - Fits MerCruiser Alpha/Bravo Yamaha Honda Suzuki Volvo Penta - Replaces 91-859046Q4 859046T4 Sierra 18-4459 - Yellow**FASWORX**$13.96**5.0★**▲ 122%**](https://www.amazon.com/dp/B0GT7RWWM4) [**Floating Marine Boat Prop 1-1/16 Polymer Propeller Wrench & Prop Stop Propeller Stop Fit Mercury/Mercruiser/OMC for All Outboard & Stern Drive Applications Light-Weight Rustproof Plastic Yellow**FullMayPro**$19.71**4.5★**▲ 93%**](https://www.amazon.com/dp/B0GH8DDK8X) [**Sporthfish Prop Wrench 91-859046Q4 Propeller Wrench for 1 1/16 Inches Nuts for Mercury Mercruiser Alpha Outboards Stern Drives Pontoon Sport and Fishing Boat 27mm Yellow Plastic Rustroof Ergonomics**Sporthfish**$13.45**3.5★**▲ 91%**](https://www.amazon.com/dp/B0GC3J2HKS)
**~~View all trending →~~**
## **What reviews say buyers love and hate about prop wrench**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Value For Money**11%
*“great value”*
**Size-Overall**10%
*“Fits perfect”*
**Ease Of Use**9%
*“Easy to use”*
**Advertised Vs Actual Product**8%
*“As advertised”*
**Weight Light**8%
*“It provides a lightweight”*
**Quality-Overall**8%
*“Build quality feels solid”*
**Rusts/Corrodes**7%
*“you never have to worry about rust”*
**Grip**5%
*“great grip”*
**Color**4%
*“its brightly colored”*
**Material Quality**3%
*“The quality of the plastic seems to be very good”*
### **What buyers complain about **
**Size-Overall**10%
*“Doesn't fit”*
**Quality-Overall**9%
*“Cheap”*
**Material Quality**8%
*“Cheap material deformed on first use”*
**Advertised Vs Actual Product**7%
*“Will not work on all outboards too big for Yamaha 70hp way too big need to change the ad”*
**Durability**6%
*“Stripped on first use”*
**Functionality-Overall**6%
*“did not really work for me at all a flat head screw driver works a lot better”*
**Compatibility-Overall**5%
*“Does not work on my 50 hp mercury 4 stroke EFI”*
**Value For Money**4%
*“Total waste of money”*
**Strength**4%
*“It bent when I tried to use it”*
**Rusts/Corrodes**3%
*“only to find it had rusted very badly in about a year”*
### **Top return reasons **
**Size-Overall**74%
**Compatibility-Overall**6%
**Defective Material/Parts**4%
**Advertised Vs Actual Product**2%
**Quality-Overall**2%
**Material Quality**2%
**Mounting**2%
**Maintenance And Repair**2%
**Value For Money**1%
**Durability**1%
## **Common prop wrench questions**
- **Is prop wrench profitable to sell on Amazon United States?**
- The niche generates $59K/yr across 13 tracked products. 2 of 9 products launched in the last 360 days are still selling. 90-day search growth is +91.6%. Flapen's verdict: Worth a look (59/100).
- **How competitive is the prop wrench niche?**
- 8 brands and 65 sellers compete. The top 5 products take 72% of clicks and top 5 brands hold 85% of demand.
- **What do buyers complain about in prop wrench?**
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Material Quality. The return rate is 1.5%.
- **When does demand for prop wrench peak?**
- Demand peaks in May–Jun–Jul–Aug; the busiest month runs 4.3× the quietest.
- **What does it cost to enter the prop wrench niche?**
- Listings span $12.77–$21.96; the average listing price is $16.71 (sweet spot $15–$100). The average incumbent carries 102 reviews — the moat a new listing must climb.
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