---
title: "royal purple oil filter — Niche Verdict: Worth a look (50/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/automotive/royal-purple-oil-filter"
last_updated: "2026-07-14T01:58:51.282Z"
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meta:
  description: "royal purple oil filter shows low returns (0.8%), but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list."
  "og:description": "royal purple oil filter shows low returns (0.8%), but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list."
  "og:title": "royal purple oil filter — Niche Verdict: Worth a look (50/100) | Amazon United States - Flapen"
---

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# **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 6% 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

## **Competition**

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%**

**Open market**

**0%**

- K&N69% - Mobil31% - Royal Purple1% - Open — no brand owns it (0%)

## **Product shelf**

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 27 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](https://m.media-amazon.com/images/I/41E7RZx2lqL.jpg)**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](https://m.media-amazon.com/images/I/51UhxRr6YuL.jpg)**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)](https://m.media-amazon.com/images/I/51UhxRr6YuL.jpg)**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](https://m.media-amazon.com/images/I/41idrWTLqXL.jpg)**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](https://m.media-amazon.com/images/I/41EGB5Qm7+L.jpg)**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](https://m.media-amazon.com/images/I/41ihYUZb67L.jpg)**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](https://m.media-amazon.com/images/I/41vg1lgT4vL.jpg)**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](https://m.media-amazon.com/images/I/41uhUwKpE5L.jpg)**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](https://m.media-amazon.com/images/I/41H3rijTONL.jpg)**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 Select Oil Filter: Designed to Protect your Engine: Fits Select 2009-2027 BUICK/CADILLAC/CHEVROLET/FORD Vehicle Models (See Product Description for Full List of Compatible Vehicles) SO-2011](https://m.media-amazon.com/images/I/31wSOSnBQuL.jpg)**K&N Select Oil Filter: Designed to Protect your Engine: Fits Select 2009-2027 BUICK/CADILLAC/CHEVROLET/FORD Vehicle Models (See Product Description for Full List of Compatible Vehicles) SO-2011**K&N**$10.55**397 rev3y ago](https://www.amazon.com/dp/B0BN6GXM8L)

**~~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](https://m.media-amazon.com/images/I/41JoOv-sTBL.jpg)**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) [![Royal Purple 30-1218 Oil Filter](https://m.media-amazon.com/images/I/51Mo-dUnGIL.jpg)**Royal Purple 30-1218 Oil Filter**Royal Purple**$20.79**4.8★**▲ 92%**](https://www.amazon.com/dp/B003L2VYZ4) [![Mobil 1 M1-212 / M1-212A Extended Performance Oil Filter (Pack of 2)](https://m.media-amazon.com/images/I/51UhxRr6YuL.jpg)**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](https://m.media-amazon.com/images/I/41xjl16k3GL.jpg)**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](https://m.media-amazon.com/images/I/41KPuKANTmL.jpg)**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)

**~~View all trending →~~**

## **Reviews**

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%