---
title: "4runner air filter — Niche Verdict: Worth a look (53/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/automotive/4runner-air-filter"
last_updated: "2026-07-13T23:04:02.899Z"
locale: en
meta:
  description: "4runner air filter shows searches that convert (13.9% search→purchase), but a small market ($68K/yr) keeps it on the watch list."
  "og:description": "4runner air filter shows searches that convert (13.9% search→purchase), but a small market ($68K/yr) keeps it on the watch list."
  "og:title": "4runner air filter — Niche Verdict: Worth a look (53/100) | Amazon United States - Flapen"
---

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# **4runner air filter**

**Worth a look**

Shows searches that convert (13.9% search→purchase), but a small market ($68K/yr) keeps it on the watch list.

Market size 17Growth 36Conversion 96Competition 55Returns 78Price range 83Avg price 92Brand share 63Review moat 43Quality gap 21

**Conversion**

**Incredible****13.9%**

search→purchase rate — share of searches ending in a sale

**Avg price**

**Great****$21.91**

avg listing price — sweet spot $15–$100

**Price range**

**Great****$7.31–$57.81**

cheapest to priciest tracked listing — scored on the share inside $15–$100

**Returns**

**Great****1.8%**

return rate — above 6% kills the launch gate

**Brand share**

**Good****67%**

top-5 brand share — brands hold most of the demand

**Competition**

**Good****52%**

top-5 click share — leaders hold, buyers still browse

**Review moat**

**Okay****2,204.17**

avg incumbent reviews — the moat a new listing must climb

**Growth**

**Okay****+8.8%**

90-day search growth — must beat 0% to launch

**Quality gap**

**Bad****4.7★**

avg incumbent rating — lower means beatable quality

**Market size**

**Bad****$68K**

$68K/yr · 22K searches

## **Competition**

The top 5 products take 52% of clicks — established leaders, but buyers still shop beyond them.

**Brands**

**17 **▲rising

**Sellers**

**76**

**Top-5 brand share**

**67%**

**Open market**

**27%**

- K&N36% - RVgolf9% - Bosch7% - A-Premium7% - KEDAKEJI7% - Toyota6%

## **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%10%$7K20%$14K30%$20K40%$27K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 23 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![K&N Engine Air Filter: Long Life 18 000 Mile Replacement Air Filter: Compatible with 2010-2024 Toyota/Lexus SUV V6/V8 (4runner GX460 FJ Cruiser) KNA-2438](https://m.media-amazon.com/images/I/41Xl5orWQ4L.jpg)**K&N Engine Air Filter: Long Life 18 000 Mile Replacement Air Filter: Compatible with 2010-2024 Toyota/Lexus SUV V6/V8 (4runner GX460 FJ Cruiser) KNA-2438**K&N**$18.18**4.5★180 rev](https://www.amazon.com/dp/B0DC3KMYN2) [2![K&N High-Flow Original Lifetime Engine Air Filter: Increase Power: Premium Washable: Compatible with 2010-2024 Toyota/Lexus: GX460 4Runner FJ Land Cruiser Prado 33-2438](https://m.media-amazon.com/images/I/51MOydQSlHL.jpg)**K&N High-Flow Original Lifetime Engine Air Filter: Increase Power: Premium Washable: Compatible with 2010-2024 Toyota/Lexus: GX460 4Runner FJ Land Cruiser Prado 33-2438**K&N**$57.81**4.8★2,048 rev](https://www.amazon.com/dp/B003NDM0QI) [3![RVgolf Engine+Cabin Air Filters Kit Fit for 2010-2024 Toyota 4RUNNER 4.0L 2010-2023 Lexus GX460 4.6L Engine Air Filter Set Automotive Accessories Replacement CF10285 1780138051](https://m.media-amazon.com/images/I/51YlOfhgQzL.jpg)**RVgolf Engine+Cabin Air Filters Kit Fit for 2010-2024 Toyota 4RUNNER 4.0L 2010-2023 Lexus GX460 4.6L Engine Air Filter Set Automotive Accessories Replacement CF10285 1780138051**RVgolf**$27.41**4.5★2,399 rev](https://www.amazon.com/dp/B0FPL875JV) [4![A-Premium Engine Air Filter Compatible with Lexus GX460 & Toyota 4Runner FJ Cruiser 2010-2023 4.0L 4.6L Flexible Panel 12 000 Miles Filter Protection Replace# 1780138051](https://m.media-amazon.com/images/I/411AnsTg1PL.jpg)**A-Premium Engine Air Filter Compatible with Lexus GX460 & Toyota 4Runner FJ Cruiser 2010-2023 4.0L 4.6L Flexible Panel 12 000 Miles Filter Protection Replace# 1780138051**A-Premium**$16.11**4.8★326 rev](https://www.amazon.com/dp/B0BLYRPLQP) [5![Engine Air Filter Compatible with 4Runner V6 (2010-2021) GX460 V8 (2010-2021) FJ Cruiser V6 (2011-2014) Replace# CA10835](https://m.media-amazon.com/images/I/31DJYTmAiXL.jpg)**Engine Air Filter Compatible with 4Runner V6 (2010-2021) GX460 V8 (2010-2021) FJ Cruiser V6 (2011-2014) Replace# CA10835**KEDAKEJI**$16.03**4.7★385 rev](https://www.amazon.com/dp/B0C2CC1N8J)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![CARORY AF835 Engine Air Filter for Lexus GX460 (2010-2023) Toyota 4Runner V6 4.0L (2010-2024) FJ Cruiser (2010-2014) OE# 17801-38050 CA10835](https://m.media-amazon.com/images/I/41LQPwRfS-L.jpg)**CARORY AF835 Engine Air Filter for Lexus GX460 (2010-2023) Toyota 4Runner V6 4.0L (2010-2024) FJ Cruiser (2010-2014) OE# 17801-38050 CA10835**Carory**$10.75**596 rev8mo ago](https://www.amazon.com/dp/B0G6CRQLV6) [![RVgolf Engine+Cabin Air Filters Kit Only Fit Gas Version for 2003-2009 Toyota 4RUNNER 4.0L V6 GAS(Not for 4.7L) 2007-2009 FJ CRUISER 4.0L V6 GAS Engine Air Filter Replace CF9846A CA9683](https://m.media-amazon.com/images/I/415b-P2DlgL.jpg)**RVgolf Engine+Cabin Air Filters Kit Only Fit Gas Version for 2003-2009 Toyota 4RUNNER 4.0L V6 GAS(Not for 4.7L) 2007-2009 FJ CRUISER 4.0L V6 GAS Engine Air Filter Replace CF9846A CA9683**RVgolf**$27.24**2,399 rev10mo ago](https://www.amazon.com/dp/B0FQ5RTYGT) [![Toyota Boshoku (TB) Engine Air Filter Engineered as Direct Replacement of 17801-38050 Fits 2010-2024 Toyota 4Runner 4.0L GAS; 2010-2023 Lexus GX460 4.6L GAS; 2010-2014 Toyota FJ Cruiser 4.0L GAS](https://m.media-amazon.com/images/I/41WpYO6-vcL.jpg)**Toyota Boshoku (TB) Engine Air Filter Engineered as Direct Replacement of 17801-38050 Fits 2010-2024 Toyota 4Runner 4.0L GAS; 2010-2023 Lexus GX460 4.6L GAS; 2010-2014 Toyota FJ Cruiser 4.0L GAS**TOYOTA BOSHOKU**$24.40**5 rev10mo ago](https://www.amazon.com/dp/B0FPSXNXTK) [![RVgolf Engine+Cabin Air Filters Kit Fit for 2010-2024 Toyota 4RUNNER 4.0L 2010-2023 Lexus GX460 4.6L Engine Air Filter Set Automotive Accessories Replacement CF10285 1780138051](https://m.media-amazon.com/images/I/51YlOfhgQzL.jpg)**RVgolf Engine+Cabin Air Filters Kit Fit for 2010-2024 Toyota 4RUNNER 4.0L 2010-2023 Lexus GX460 4.6L Engine Air Filter Set Automotive Accessories Replacement CF10285 1780138051**RVgolf**$27.41**2,399 rev10mo ago](https://www.amazon.com/dp/B0FPL875JV) [![ITESIER Cabin Engine Air Filter for 4Runner (2010-2024) V6 4.0L GX460 GX 460 Replaces 17801-38050 87139-30040 17801-38051 CA10835 (NOT FOR 2.7L)](https://m.media-amazon.com/images/I/51NcywhIO+L.jpg)**ITESIER Cabin Engine Air Filter for 4Runner (2010-2024) V6 4.0L GX460 GX 460 Replaces 17801-38050 87139-30040 17801-38051 CA10835 (NOT FOR 2.7L)**ITESIER**$28.27**47 rev10mo ago](https://www.amazon.com/dp/B0FPFSBVS9)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![RVgolf Engine+Cabin Air Filters Kit Fit for 2010-2024 Toyota 4RUNNER 4.0L 2010-2023 Lexus GX460 4.6L Engine Air Filter Set Automotive Accessories Replacement CF10285 1780138051](https://m.media-amazon.com/images/I/51YlOfhgQzL.jpg)**RVgolf Engine+Cabin Air Filters Kit Fit for 2010-2024 Toyota 4RUNNER 4.0L 2010-2023 Lexus GX460 4.6L Engine Air Filter Set Automotive Accessories Replacement CF10285 1780138051**RVgolf**$27.41**4.5★**▲ 219%**](https://www.amazon.com/dp/B0FPL875JV) [![Forccord Cabin Air Filter and Engine Air Filter Fits for Toyota 4RUNNER 4.0L (2024-2010) Lexus GX460 4.6L (2023-2010) Activated Carbon Cabin Filter Replacement CF10285 1780138051](https://m.media-amazon.com/images/I/51FI3ZZDpvL.jpg)**Forccord Cabin Air Filter and Engine Air Filter Fits for Toyota 4RUNNER 4.0L (2024-2010) Lexus GX460 4.6L (2023-2010) Activated Carbon Cabin Filter Replacement CF10285 1780138051**Forccord**$22.83**4.7★**▲ 133%**](https://www.amazon.com/dp/B0F9WGT2WW) [![RVgolf Engine+Cabin Air Filters Kit Only Fit Gas Version for 2003-2009 Toyota 4RUNNER 4.0L V6 GAS(Not for 4.7L) 2007-2009 FJ CRUISER 4.0L V6 GAS Engine Air Filter Replace CF9846A CA9683](https://m.media-amazon.com/images/I/415b-P2DlgL.jpg)**RVgolf Engine+Cabin Air Filters Kit Only Fit Gas Version for 2003-2009 Toyota 4RUNNER 4.0L V6 GAS(Not for 4.7L) 2007-2009 FJ CRUISER 4.0L V6 GAS Engine Air Filter Replace CF9846A CA9683**RVgolf**$27.24**4.5★**▲ 85%**](https://www.amazon.com/dp/B0FQ5RTYGT) [![ITESIER Cabin Engine Air Filter for 4Runner (2010-2024) V6 4.0L GX460 GX 460 Replaces 17801-38050 87139-30040 17801-38051 CA10835 (NOT FOR 2.7L)](https://m.media-amazon.com/images/I/51NcywhIO+L.jpg)**ITESIER Cabin Engine Air Filter for 4Runner (2010-2024) V6 4.0L GX460 GX 460 Replaces 17801-38050 87139-30040 17801-38051 CA10835 (NOT FOR 2.7L)**ITESIER**$28.27**4.9★**▲ 70%**](https://www.amazon.com/dp/B0FPFSBVS9) [![CARORY AF835 Engine Air Filter for Lexus GX460 (2010-2023) Toyota 4Runner V6 4.0L (2010-2024) FJ Cruiser (2010-2014) OE# 17801-38050 CA10835](https://m.media-amazon.com/images/I/41LQPwRfS-L.jpg)**CARORY AF835 Engine Air Filter for Lexus GX460 (2010-2023) Toyota 4Runner V6 4.0L (2010-2024) FJ Cruiser (2010-2014) OE# 17801-38050 CA10835**Carory**$10.75**4.7★**▲ 67%**](https://www.amazon.com/dp/B0G6CRQLV6)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 102 weeks — +8.8% search growth over the last 90 days.

3K2KSpike '24Spike '25Prime Day '25Spike '26 seasonDecMarJunAugNovMarMay

Peak months: Jan, Feb · busiest ÷ quietest = 4.8×

## **Reviews**

What buyers praise and complain about, mined from review topics.

### **What buyers love **

**Size-Overall**36%

*“Easy fit”*

**Quality-Overall**15%

*“Good quality”*

**Filtration**14%

*“Great filter for price”*

**Value For Money**12%

*“Good Value”*

**Assembly/Installation**8%

*“Easy install”*

**Advertised Vs Actual Product**3%

*“As advertised”*

**Ease Of Use**2%

*“Great to use”*

**Efficiency**1%

*“Keeps the air clean”*

**Maintenance And Repair**1%

*“I highly recommend this product to anyone looking to save on routine maintenance”*

**Fuel Efficiency**1%

*“Helps maintain engine efficiency”*

### **What buyers complain about **

**Compatibility-Overall**23%

*“Doesn't fit an FJ Cruiser”*

**Filtration**20%

*“length of filter is too short”*

**Size-Overall**12%

*“Does not fit”*

**Quality-Overall**9%

*“Cheaply made”*

**Advertised Vs Actual Product**5%

*“Item not as described-did not fit”*

**Fuel Efficiency**5%

*“Poor gas mileage”*

**Functionality-Overall**3%

*“someone had put the last one in the wrong direction”*

**Thickness**2%

*“Twice as thick as the one my stealership uses”*

**Audio Quality**2%

*“No difference in mpg or sound as others have mentioned”*

**Assembly/Installation**1%

*“Didnt install it because it feels cheap and flimsy”*

### **Top return reasons **

**Size-Overall**49%

**Compatibility-Overall**24%

**Filtration**12%

**Advertised Vs Actual Product**4%

**Value For Money**3%

**Defective Material/Parts**1%

**Product Condition**1%

**Quality-Overall**1%

**Functionality-Overall**1%

**Assembly/Installation**1%