---
title: "Engine Oil Leak Detection Kit — $189K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/pet-supplies/engine-oil-leak-detection-kit"
last_updated: "2026-08-05T19:40:42.149Z"
locale: en
meta:
description: "Niche score 56/100 · $189K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 56/100 · $189K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Engine Oil Leak Detection Kit — $189K/yr Amazon US Niche (2026) - Flapen"
---
# **engine oil leak detection kit**
**Worth a look**
Shows a sweet-spot price point ($23.13 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 38Growth 23Conversion 85Competition 71Returns 73Price range 70Avg price 95Brand share 75Review moat 23Quality gap 40
**Avg price**
**Incredible****$23.13**
avg listing price — sweet spot $15–$100
**Conversion**
**Great****9.4%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Great****60%**
top-5 brand share — no brand owns this niche
**Returns**
**Good****2.1%**
return rate — above 5% kills the launch gate
**Competition**
**Good****42%**
top-5 click share — leaders hold, buyers still browse
**Price range**
**Good****$6.32–$128.47**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Market size**
**Okay****$189K**
$189K/yr · 87K searches
**Growth**
**Bad****-3.7%**
90-day search growth — must beat 0% to launch
**Review moat**
**Bad****7,080.44**
avg incumbent reviews — the moat a new listing must climb
According to Flapen's Amazon United States niche tracking, engine oil leak detection kit is a $189K/yr Amazon United States market (87K searches/yr). The top 5 brands hold 60% of demand. Demand peaks in May–Jun–Jul. Verdict: Worth a look — 56/100.
Data updated Jul 24, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **engine oil leak detection kit market data**
- **Units sold / yr**
- **8K–10K**
- avg 100–250/product
- **Revenue / yr**
- **$185K–$231K**
- units × avg price
- **Conversion rate**
- **9.4%**
- **Avg BSR**
- **#109**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **94%**
- **Out of stock**
- **1.4%**
- **Avg brand age**
- **44 months**
- **Avg seller age**
- **177 days**
## **Competition & brand share**
The top 5 products take 42% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**26 **▲rising
**Sellers**
**41**
**Top-5 brand share**
**60%**
Top 20: 93%
**Top-5 click share**
**42%**
Top 20: 81%
**Open market**
**36%**
- Vansky30% - MOWETOO14% - ESCO LITE6% - GLOSSDAY5% - OLIGHT5% - AdamStar5%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -3.7% search growth over the last 90 days.
2K2KSpike '24Black Friday '24Holiday '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: May, Jun, Jul · busiest ÷ quietest = 3.7×
[**Open Trend **](https://flapen.com/research/us/pet-supplies/engine-oil-leak-detection-kit/trend)
## **Top engine oil leak detection kit search terms**
- **flashlight with uv light combo**12K/yr-19.1%2.4% conv. - **flashlight with uv**8K/yr+31.6%1.9% conv. - **flashlight with black light combo**4K/yr+66.9%4.7% conv. - **ringworm light**5K/yr+7.7%9.8% conv. - **cat urine detector light**3K/yr+11.8%15.3% conv. - **germ detector**6K/yr-19.3%1.3% conv. - **uv flashlight for ac leak detection**2K/yr+427.9%4.5% conv. - **long wave uv light**5K/yr-26.0%1.7% conv. - **cat pee detector**5K/yr-33.5%15.4% conv. - **mini blacklight flashlight**3K/yr+38.2%6.2% conv. [**All search terms **](https://flapen.com/research/us/pet-supplies/engine-oil-leak-detection-kit/search-terms)
## **Top engine oil leak detection kit 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%$9K10%$19K15%$28K20%$38K1001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Vansky UV Flashlight Black Light 51 LED Blacklight Pet Urine Detector for Dog/Cat Urine Dry Stains Bed Bug Resin Curing Scorpions Finder**Vansky**$12.25**4.4★74,022 rev](https://www.amazon.com/dp/B01A5KLUG2) [2**MOWETOO UV Flashlight Portable Blacklight Flashlight LED Torch with White and Ultraviolet Light Combo Black Light Pet Urine Detector for Dog Cat Pee ID Check AC Leak Bed Bug Rocks Resin**MOWETOO**$11.03**4.5★7,885 rev](https://www.amazon.com/dp/B09HH64G4G) [3**UV Light 395nm Blacklight Flashlight: Vansky 12 LED Black Light Mini Pet Urine Detection for Invisible Dog/Cat Dried Urine Stains on Carpet Scorpion Finder Resin Curing**Vansky**$6.32**4.3★13,432 rev](https://www.amazon.com/dp/B0758CJDGT) [4**ESCO LITE Black Light for Pet Urine Detection UV Flashlight 395nm Pet Urine Detector Light for Cat Pee and Dog Stains Carpets Floors**ESCO LITE**$11.84**4.4★44,136 rev](https://www.amazon.com/dp/B008133KB4) [5**UV Black light FlashlightRechargeable 2-in-1 LED White Light Flashlight and BlackLight 395nm Waterproof Zoomable Super Bright LED for Camping Hiking Pet Urine Detection Scorpion Detection**MOWETOO**$12.25**4.6★314 rev](https://www.amazon.com/dp/B0FDFRHPCH)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Dokhbem 365nm UV Flashlight Rechargeable Black Light Flashlight with LCD Display Powerful Ultraviolet Lights for Pet Urine Detection Resin Curing Rockhounding Scorpion Uranium Glass A/C Leak**Dokhbem**$21.80**320 rev6mo ago](https://www.amazon.com/dp/B0G4QZ8JPK) [**UV Black light FlashlightRechargeable 2-in-1 LED White Light Flashlight and BlackLight 395nm Waterproof Zoomable Super Bright LED for Camping Hiking Pet Urine Detection Scorpion Detection**MOWETOO**$12.25**314 rev8mo ago](https://www.amazon.com/dp/B0FDFRHPCH) [**OLIGHT ArkPro Lite Flat Pocket Flashlight Rechargeable Portable 1200 Lumens with White LED Red Light and UV Light Triple Sources for Pet Urine Detection Camping Emergency Working (Matte Black)**OLIGHT**$70.66**302 rev8mo ago](https://www.amazon.com/dp/B0FGJG1V2N) [**HOTLIGH ZF8313 Rechargeable Flashlight Magnetic EDC Flashlight Rechargeable 2000 Lumens LED Flashlight with RGB and UV Lighting Source for Outdoor Car Repairing Fathers Day Dad Gifts**HOTLIGH**$25.39**758 rev11mo ago](https://www.amazon.com/dp/B0FH2DLXBG) [**Black light UV Flashlight Rechargeable 395nm Mini Zoomable Blacklight Woods Lamp Portable But Powerful USB Ultraviolet Flashlights for Pet Urine Detection Home Scorpions Resin Curing Leak**MOWETOO**$9.77**1,096 rev1y ago](https://www.amazon.com/dp/B0DN12T5DZ)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Vansky Air Conditioner Leak Detector: Professional Car Tool 68 LED Automotive AC UV Dye Leak Detection Kit with Protective Glasses**Vansky**$18.30**4.6★**▲ 198%**](https://www.amazon.com/dp/B0CS6M7653) [**Black light UV Flashlight Rechargeable 395nm Mini Zoomable Blacklight Woods Lamp Portable But Powerful USB Ultraviolet Flashlights for Pet Urine Detection Home Scorpions Resin Curing Leak**MOWETOO**$9.77**4.6★**▲ 172%**](https://www.amazon.com/dp/B0DN12T5DZ) [**UV Black light FlashlightRechargeable 2-in-1 LED White Light Flashlight and BlackLight 395nm Waterproof Zoomable Super Bright LED for Camping Hiking Pet Urine Detection Scorpion Detection**MOWETOO**$12.25**4.6★**▲ 166%**](https://www.amazon.com/dp/B0FDFRHPCH) [**Dokhbem 365nm UV Flashlight Rechargeable Black Light Flashlight with LCD Display Powerful Ultraviolet Lights for Pet Urine Detection Resin Curing Rockhounding Scorpion Uranium Glass A/C Leak**Dokhbem**$21.80**4.7★**▲ 139%**](https://www.amazon.com/dp/B0G4QZ8JPK) [**OLIGHT ArkPro Lite Flat Pocket Flashlight Rechargeable Portable 1200 Lumens with White LED Red Light and UV Light Triple Sources for Pet Urine Detection Camping Emergency Working (Matte Black)**OLIGHT**$70.66**4.8★**▲ 114%**](https://www.amazon.com/dp/B0FGJG1V2N)
**~~View all trending →~~**
## **What buyers say about engine oil leak detection kit**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Brightness/Shine/Glow**35%
*“Bright light”*
**Quality-Overall**10%
*“The build quality is excellent”*
**Value For Money**8%
*“Great Buy”*
**Advertised Vs Actual Product**7%
*“As advertised”*
**Charging**5%
*“holds a charge”*
**Ease Of Use**4%
*“Easy to hold and handle”*
**Size-Overall**3%
*“Good size”*
**Battery Life**3%
*“Battery lasts forever”*
**Strength**3%
*“Solid product”*
**Portability**2%
*“Very portable”*
### **What buyers complain about **
**Brightness/Shine/Glow**16%
*“Not bright enough”*
**Functionality-Overall**15%
*“Barely works”*
**Quality-Overall**6%
*“Repeated quality control failures”*
**Battery Life**6%
*“Bad battery life”*
**Charging**6%
*“Never charged”*
**Durability**5%
*“Falls apart”*
**Value For Money**4%
*“Yes it's expensive”*
**Size-Overall**4%
*“This light is small”*
**Strength**3%
*“Too weak”*
**Advertised Vs Actual Product**3%
*“Not as advertised”*
### **Top return reasons **
**Brightness/Shine/Glow**25%
**Functionality-Overall**23%
**Advertised Vs Actual Product**11%
**Size-Overall**10%
**Value For Money**5%
**Battery Inclusion**4%
**Defective Material/Parts**4%
**Bulb Flicker/Dimming/Color**4%
**Charging**3%
**Strength**2%
## **Common questions**
- **Is engine oil leak detection kit profitable to sell on Amazon United States?**
- The niche generates $189K/yr across 34 tracked products. 5 of 5 products launched in the last 360 days are still selling. 90-day search growth is -3.7%. Flapen's verdict: Worth a look (56/100).
- **How competitive is the engine oil leak detection kit niche?**
- 26 brands and 41 sellers compete. The top 5 products take 42% of clicks and top 5 brands hold 60% of demand.
- **What do buyers complain about in engine oil leak detection kit?**
- Top complaints mined from reviews: Brightness/Shine/Glow, Functionality-Overall, Quality-Overall. The return rate is 2.1%.
- **When does demand for engine oil leak detection kit peak?**
- Demand peaks in May–Jun–Jul; the busiest month runs 3.7× the quietest.
- **What does it cost to enter the engine oil leak detection kit niche?**
- Listings span $6.32–$128.47; the average listing price is $23.13 (sweet spot $15–$100). The average incumbent carries 7,080 reviews — the moat a new listing must climb.
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