---
title: "Royal Purple Oil Filter — $318K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/royal-purple-oil-filter"
last_updated: "2026-08-06T22:36:04.503Z"
locale: en
meta:
description: "Niche score 50/100 · $318K/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 50/100 · $318K/yr market. Brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Royal Purple Oil Filter — $318K/yr Amazon US Niche (2026) - Flapen"
---
# **royal purple oil filter**
**Worth a look**
Shows low returns (0.8%), but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list.
Market size 52Growth 37Conversion 79Competition 46Returns 96Price range 88Avg price 81Brand share 0Review moat 40Quality gap 14
**Returns**
**Incredible****0.8%**
return rate — above 5% kills the launch gate
**Price range**
**Great****$10.55–$65.28**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Avg price**
**Great****$17.21**
avg listing price — sweet spot $15–$100
**Conversion**
**Great****8.0%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Good****$318K**
$318K/yr · 231K searches
**Competition**
**Okay****57%**
top-5 click share — leaders hold, buyers still browse
**Review moat**
**Okay****2,492.11**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Okay****+10.0%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Bad****4.8★**
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, royal purple oil filter is a $318K/yr Amazon United States market (231K searches/yr). The top 5 brands hold 100% of demand. Verdict: Worth a look — 50/100.
Data updated Jul 9, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **royal purple oil filter market data**
- **Units sold / yr**
- **15K–20K**
- avg 500–750/product
- **Revenue / yr**
- **$258K–$344K**
- units × avg price
- **Conversion rate**
- **8.0%**
- **Avg BSR**
- **#321**
- **Page quality**
- **0%**
- **Prime**
- **96%**
- **Sponsored**
- **96%**
- **Out of stock**
- **12.5%**
- **Avg brand age**
- **78 months**
- **Avg seller age**
- **147 days**
## **Competition & brand share**
The top 5 products take 57% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**3 **—flat
**Sellers**
**94**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**57%**
Top 20: 92%
**Open market**
**0%**
- K&N69% - Mobil31% - Royal Purple1% - Open — no brand owns it (0%)
## **Top royal purple oil filter search terms**
- **k&n oil filter**93K/yr+13.1%3.9% conv. - **royal purple oil filter**37K/yr-14.4%0.8% conv. - **kn oil filter**17K/yr+8.3%5.2% conv. - **m1-212a mobil 1 oil filter**13K/yr+21.6%14.4% conv. - **k and n oil filter**15K/yr+15.2%4.5% conv. - **m1-212a**8K/yr+68.9%11.3% conv. - **oil filter k&n**10K/yr-10.7%3.7% conv. - **mobil 1 oil filter m1-212a**6K/yr+6.1%7.0% conv. - **mobil 1 m1-212a**5K/yr+37.4%13.6% conv. - **k & n oil filter**5K/yr+12.6%3.4% conv. [**All search terms **](https://flapen.com/research/us/automotive/royal-purple-oil-filter/search-terms)
## **Top royal purple oil filter 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%$16K10%$32K15%$48K20%$64K1001K10K 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**K&N Premium Oil Filter: 20 000 Mile Engine Protection with Wrench Off Nut: Compatible with Select 1990-2026 INFINITI/MAZDA/NISSAN/SUBARU Vehicle Models (See Description for Select Models) HP-1008**K&N**$15.67**4.8★5,973 rev](https://www.amazon.com/dp/B000C4087Y) [2**Mobil 1 M1-212A Extended Performance Oil Filter 1 Pack**Mobil**$16.88**4.7★2,227 rev](https://www.amazon.com/dp/B072BDM5HZ) [3**Mobil 1 M1-212 / M1-212A Extended Performance Oil Filter (Pack of 2)**Mobil**$23.99**4.7★2,227 rev](https://www.amazon.com/dp/B0784BFHMQ) [4**K&N Premium Oil Filter: 20 000 Mile Engine Protection with Wrench Off Nut: Compatible with Select 2007-2026 ALFA ROMEO/BUICK/CHEVROLET/DODGE Vehicle Models (See Description for Select Models) HP-1017**K&N**$14.93**4.8★3,112 rev](https://www.amazon.com/dp/B000NKCIKM) [5**K&N Premium Oil Filter: 20 000 Mile Engine Protection with Wrench Off Nut: Compatible with Select 1988-2026 HYUNDAI/KIA/SUBARU/HONDA Vehicle Models (See Product Description for Select Models) HP-1004**K&N**$15.16**4.8★1,814 rev](https://www.amazon.com/dp/B000C3YTM0)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**K&N Select Oil Filter: Designed to Protect your Engine: Fits Select 1998-2027 INFINITI/MAZDA/NISSAN/SUBARU Vehicle Models (See Product Description for Full List of Compatible Vehicles) SO-1008**K&N**$10.98**693 rev3y ago](https://www.amazon.com/dp/B0BN795KLD) [**K&N Select Oil Filter: Designed to Protect your Engine: Fits Select 1991-2027 ACURA/HONDA/MITSUBISHI/NISSAN Vehicle Models (See Product Description for Full List of Compatible Vehicles) SO-1010**K&N**$10.77**911 rev3y ago](https://www.amazon.com/dp/B0BN6TQR7V) [**K&N Select Oil Filter: Designed to Protect your Engine: Fits Select FORD/LINCOLN/TOYOTA/VOLKSWAGEN Vehicle Models (See Product Description for Full List of Compatible Vehicles) SO-1002**K&N**$10.56**364 rev3y ago](https://www.amazon.com/dp/B0BN6S3P6F) [**K&N Select Oil Filter: Designed to Protect your Engine: Fits Select 2007-2026 ALFA ROMEO/BUICK/CHEVROLET/DODGE Vehicle Models (See Product Description for Full List of Compatible Vehicles) SO-1017**K&N**$11.05**496 rev3y ago](https://www.amazon.com/dp/B0BN6RWSMH) [**K&N Premium Oil Filter: 20 000 Mile Engine Protection with Wrench Off Nut: Compatible with 2011-2026 GMC/Cadillac/Chervolet/Buick (See Product Description for Select Models) HP-2012**K&N**$14.60**561 rev4y ago](https://www.amazon.com/dp/B09BDGGMLX)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**K&N Motorcycle Oil Filter: High Performance Premium Designed to be used with Synthetic or Conventional Oils Wrench Off Nut: Fits Select Polaris Side-by-Side and ATV Models KN-198**K&N**$16.01**4.8★**▲ 98%**](https://www.amazon.com/dp/B001NAP2D6) [**Mobil 1 M1-212 / M1-212A Extended Performance Oil Filter (Pack of 2)**Mobil**$23.99**4.7★**▲ 72%**](https://www.amazon.com/dp/B0784BFHMQ) [**K&N Motorcycle Oil Filter: High Performance Premium Designed to be used with Synthetic or Conventional Oils Wrench Off Nut: Fits Select Harley Davidson Motorcycles KN-171B**K&N**$14.47**4.8★**▲ 32%**](https://www.amazon.com/dp/B000FGI6E6) [**K&N Motorcycle Oil Filter: High Performance Premium Designed to be used with Synthetic or Conventional Oils Wrench Off Nut: Fits Select Harley Davidson Buell Motorcycles KN-171C**K&N**$15.91**4.8★**▲ 27%**](https://www.amazon.com/dp/B000E28C7M) [**Mobil 1 M1-212A Extended Performance Oil Filter 1 Pack**Mobil**$16.88**4.7★**▲ 11%**](https://www.amazon.com/dp/B072BDM5HZ)
**~~View all trending →~~**
## **What buyers say about royal purple oil filter**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Filtration**32%
*“Great filters for the money”*
**Quality-Overall**17%
*“This filter was good quality”*
**Size-Overall**16%
*“Fit perfect”*
**Value For Money**6%
*“well worth the price”*
**Assembly/Installation**4%
*“Installing”*
**Ease Of Use**4%
*“Very easy to use”*
**Advertised Vs Actual Product**4%
*“As advertised”*
**Efficiency**3%
*“It look likes to does really good job”*
**Durability**2%
*“Durable”*
**Lubrication**1%
*“Makes oil change easier”*
### **What buyers complain about **
**Filtration**22%
*“Sent me a filter with no gasket on it”*
**Compatibility-Overall**16%
*“Not compatible”*
**Quality-Overall**11%
*“Quality control issues”*
**Size-Overall**8%
*“Does not fit 2023 Honda Odyssey”*
**Leak-Proof**5%
*“Posible oil leaks due to poor seal”*
**Rusts/Corrodes**5%
*“Rusted and peeling badly after a few months”*
**Value For Money**3%
*“Not worth the money”*
**Advertised Vs Actual Product**2%
*“Poor job listing the correct item”*
**Assembly/Installation**2%
*“have not installed it yet until I checked 1 last thing”*
**Shape/Style**2%
*“The shape at the top is wrong”*
### **Top return reasons **
**Size-Overall**37%
**Filtration**22%
**Compatibility-Overall**17%
**Value For Money**7%
**Advertised Vs Actual Product**3%
**Product Condition**3%
**Defective Material/Parts**3%
**Functionality-Overall**1%
**Leak-Proof**1%
**Assembly/Installation**1%
## **Common questions**
- **Is royal purple oil filter profitable to sell on Amazon United States?**
- The niche generates $318K/yr across 27 tracked products. 90-day search growth is +10.0%. Flapen's verdict: Worth a look (50/100).
- **How competitive is the royal purple oil filter niche?**
- 3 brands and 94 sellers compete. The top 5 products take 57% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in royal purple oil filter?**
- Top complaints mined from reviews: Filtration, Compatibility-Overall, Quality-Overall. The return rate is 0.8%.
- **What does it cost to enter the royal purple oil filter niche?**
- Listings span $10.55–$65.28; the average listing price is $17.21 (sweet spot $15–$100). The average incumbent carries 2,492 reviews — the moat a new listing must climb.
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