---
title: "Yamaha Lower Unit Oil — $134K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/yamaha-lower-unit-oil"
last_updated: "2026-08-09T05:25:19.639Z"
locale: en
meta:
description: "Niche score 51/100 · $134K/yr market. Brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 51/100 · $134K/yr market. Brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Yamaha Lower Unit Oil — $134K/yr Amazon US Niche (2026) - Flapen"
---
# **yamaha lower unit oil**
**Worth a look**
Shows low returns (0.5%), but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list.
Market size 30Growth 62Conversion 90Competition 26Returns 98Price range 95Avg price 95Brand share 0Review moat 71Quality gap 16
**Returns**
**Incredible****0.5%**
return rate — above 5% kills the launch gate
**Avg price**
**Incredible****$30.23**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$15.00–$56.57**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Great****10.7%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Good****667.87**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Good****+39.4%**
90-day search growth — must beat 0% to launch
**Market size**
**Okay****$134K**
$134K/yr · 41K searches
**Competition**
**Okay****70%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, yamaha lower unit oil is a $134K/yr Amazon United States market (41K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Mar–Apr–May–Oct. Verdict: Worth a look — 51/100.
Data updated Jul 9, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **yamaha lower unit oil market data**
- **Units sold / yr**
- **5K–6K**
- avg 250–500/product
- **Revenue / yr**
- **$151K–$181K**
- units × avg price
- **Conversion rate**
- **10.7%**
- **Avg BSR**
- **#126**
- **Page quality**
- **0%**
- **Prime**
- **93%**
- **Sponsored**
- **27%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **78 months**
- **Avg seller age**
- **154 days**
## **Competition & brand share**
The top 5 products take 70% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**5 **▼falling
**Sellers**
**41**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**70%**
Top 20: 100%
**Open market**
**0%**
- Yamaha Motor75% - STONEMUSLE15% - PWC Parts Co6% - SeaSierra2% - Quicksilver2% - Open — no brand owns it (0%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +39.4% search growth over the last 90 days.
1K750Spike '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Mar, Apr, May, Oct · busiest ÷ quietest = 3.0×
[**Open Trend **](https://flapen.com/research/us/automotive/yamaha-lower-unit-oil/trend)
## **Top yamaha lower unit oil search terms**
- **yamaha lower unit gear oil**12K/yr+49.2%13.3% conv. - **yamalube 80w90 gear oil**12K/yr+41.6%8.7% conv. - **yamaha lower unit oil**4K/yr+45.9%8.7% conv. - **yamalube gear oil**4K/yr+12.0%8.6% conv. - **yamaha gear lube**4K/yr+45.1%14.0% conv. - **yamaha gear oil**3K/yr+46.6%10.2% conv. - **yamaha lower unit oil change kit**2K/yr-9.2%8.9% conv. [**All search terms **](https://flapen.com/research/us/automotive/yamaha-lower-unit-oil/search-terms)
## **Top yamaha lower unit oil 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%5%$7K10%$13K15%$20K20%$27K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 15 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Yamaha Yamalube Marine Lower Unit Gear Lube HD- 1 Quart #Acc-GLUBE-HD-QT**Yamaha Motor**$16.16**4.7★217 rev](https://www.amazon.com/dp/B005NIMVL0) [2**Yamaha Original OEM Yamalube Acc-GEARL-UB-QT Marine Lower Unit Gearcase Lube Yamalube OEM - 2 Quarts**Yamaha Motor**$30.94**4.8★58 rev](https://www.amazon.com/dp/B00VINVVDI) [3**YAMAHA Yamalube OEM Outboard Gear Lube Kit w/Pump ACC-GEARL-UB-QT Lower Unit Oil 90430-08003-00 Gaskets 2 Stroke 4 Stroke F15 F20 F25 F40 F50 F60 F70 F75 F90 F115 F150 F175 F200 F225 F250 150 175**STONEMUSLE**$33.47**4.8★702 rev](https://www.amazon.com/dp/B07Q1YBZXL) [4**Yamaha Yamalube Marine Lower Unit Gearcase Lube- 1 Quart and Pump Plus Gasket #Acc-GEARL-UB-QT**Yamaha Motor**$34.52**4.8★51 rev](https://www.amazon.com/dp/B00VIU4KTI) [5**Yamaha Yamalube Marine Lower Unit Gearcase Lube- 1 Gallon #Acc-GEARL-UB-GL**Yamaha Motor**$45.58**4.6★42 rev](https://www.amazon.com/dp/B007IU1ZPO)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Yamaha Original OEM Yamalube Acc-GEARL-UB-QT Marine Lower Unit Gearcase Lube Yamalube OEM - Kit with Pump and Gaskets**Yamaha Motor**$56.57**12 rev1y ago](https://www.amazon.com/dp/B0F2JL8R4C) [**Outboard Lower Unit Gear Lube Oil Pump for Mercury Yamaha Evinrude Motors**SeaSierra**$15.00**185 rev1y ago](https://www.amazon.com/dp/B0DNFJ1DZ3) [**Yamaha Yamalube Side by Side Gear Oil- 32 Ounce #ACC-GROIL-G5-QT**Yamaha Motor**$17.77**48 rev2y ago](https://www.amazon.com/dp/B0CSDQYHCS) [**Yamaha Yamalube Side-by-Side Gear Oil- (Qty 2) 32 Ounce #ACC-GROIL-G5-QT**Yamaha Motor**$35.97**7 rev2y ago](https://www.amazon.com/dp/B0CSDSZT9W) [**Yamaha Original OEM Yamalube Acc-GEARL-UB-QT Marine Lower Unit Gearcase Lube Yamalube OEM - 2 Quarts**Yamaha Motor**$30.94**58 rev2y ago](https://www.amazon.com/dp/B00VINVVDI)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Yamaha Original OEM Yamalube Acc-GEARL-UB-QT Marine Lower Unit Gearcase Lube Yamalube OEM - 2 Quarts**Yamaha Motor**$30.94**4.8★**▲ 117%**](https://www.amazon.com/dp/B00VINVVDI) [**Yamaha Yamalube Marine Lower Unit Gearcase Lube- 32 Ounces #Acc-GEARL-UB-QT**Yamaha Motor**$20.35**4.6★**▲ 111%**](https://www.amazon.com/dp/B07S5D8LMW) [**Yamaha Yamalube Side-by-Side Gear Oil- (Qty 2) 32 Ounce #ACC-GROIL-G5-QT**Yamaha Motor**$35.97**5.0★**▲ 107%**](https://www.amazon.com/dp/B0CSDSZT9W) [**Yamaha Yamalube Marine Lower Unit Gearcase Lube- 1 Quart and Pump Plus Gasket #Acc-GEARL-UB-QT**Yamaha Motor**$34.52**4.8★**▲ 63%**](https://www.amazon.com/dp/B00VIU4KTI) [**Yamaha Original OEM Yamalube Acc-GEARL-UB-QT Marine Lower Unit Gearcase Lube Yamalube OEM - Kit with Pump and Gaskets**Yamaha Motor**$56.57**4.9★**▲ 57%**](https://www.amazon.com/dp/B0F2JL8R4C)
**~~View all trending →~~**
## **What buyers say about yamaha lower unit oil**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**22%
*“Great kit”*
**Value For Money**20%
*“Great Value”*
**Advertised Vs Actual Product**13%
*“As advertised”*
**Efficiency**13%
*“Did its job”*
**Ease Of Use**10%
*“Easy to use”*
**Size-Overall**5%
*“Proper fit”*
**Leak-Proof**3%
*“Also used part of kit to pump up gearcase to 10lbs check for leaks worked great”*
**Functionality-Overall**2%
*“Product worked fine”*
**Motor Power**2%
*“works great used on outboard motor”*
**Noise Level**2%
*“Smooth ride now level of noise is now smoother”*
### **What buyers complain about **
**Size-Overall**28%
*“Fill hose does not securely fit the pump”*
**Instructions/User Manual/Troubleshooting**11%
*“No directions in the box”*
**Lubrication**11%
*“Is it just me or is everyone checking Gl-4 vs this Gl-5 lube”*
**Advertised Vs Actual Product**11%
*“but the 3/8 swivel adapter is NOT a swivel as the description says”*
**Assembly/Installation**11%
*“Could be a little easier to screw on”*
**Durability**6%
*“Broke on first use”*
**Quality-Overall**6%
*“Junk”*
**Ease Of Cleaning**6%
*“What a mess”*
**Value For Money**6%
*“just wish it were cheaper”*
### **Top return reasons **
**Value For Money**22%
**Advertised Vs Actual Product**18%
**Size-Overall**16%
**Leak-Proof**13%
**Compatibility-Overall**10%
**Functionality-Overall**5%
**Motor Issues**3%
**Defective Material/Parts**2%
**Product Condition**2%
**Lubrication**1%
## **Common questions**
- **Is yamaha lower unit oil profitable to sell on Amazon United States?**
- The niche generates $134K/yr across 15 tracked products. 90-day search growth is +39.4%. Flapen's verdict: Worth a look (51/100).
- **How competitive is the yamaha lower unit oil niche?**
- 5 brands and 41 sellers compete. The top 5 products take 70% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in yamaha lower unit oil?**
- Top complaints mined from reviews: Size-Overall, Instructions/User Manual/Troubleshooting, Lubrication. The return rate is 0.5%.
- **When does demand for yamaha lower unit oil peak?**
- Demand peaks in Mar–Apr–May–Oct; the busiest month runs 3.0× the quietest.
- **What does it cost to enter the yamaha lower unit oil niche?**
- Listings span $15.00–$56.57; the average listing price is $30.23 (sweet spot $15–$100). The average incumbent carries 668 reviews — the moat a new listing must climb.
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