---
title: "4runner Air Filter — $68K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/4runner-air-filter"
last_updated: "2026-08-09T10:36:43.306Z"
locale: en
meta:
description: "Niche score 53/100 · $68K/yr market · 22K searches/yr · $21.91 avg price. A small market ($68K/yr) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 53/100 · $68K/yr market · 22K searches/yr · $21.91 avg price. A small market ($68K/yr) keeps it on the watch list. Data updated Jul 2026."
"og:title": "4runner Air Filter — $68K/yr Amazon US Niche (2026) - Flapen"
---
# **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 5% 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
According to Flapen's Amazon United States niche tracking, 4runner air filter is a $68K/yr Amazon United States market (22K searches/yr). The top 5 brands hold 67% of demand. Demand peaks in Jan–Feb. Verdict: Worth a look — 53/100.
Data updated Jul 9, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **4runner air filter market data**
- **Units sold / yr**
- **3K–3K**
- avg 100–250/product
- **Revenue / yr**
- **$55K–$66K**
- units × avg price
- **Conversion rate**
- **13.9%**
- **Avg BSR**
- **#520**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **91%**
- **Out of stock**
- **1.2%**
- **Avg brand age**
- **61 months**
- **Avg seller age**
- **156 days**
## **Competition & brand share**
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%**
Top 20: 100%
**Top-5 click share**
**52%**
Top 20: 96%
**Open market**
**27%**
- K&N36% - RVgolf9% - Bosch7% - A-Premium7% - KEDAKEJI7% - Toyota6%
## **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×
[**Open Trend **](https://flapen.com/research/us/automotive/4runner-air-filter/trend)
## **Top 4runner air filter search terms**
- **4runner air filter**9K/yr-3.7%8.9% conv. - **4runner engine air filter**4K/yr+12.3%11.5% conv. - **toyota 4runner air filter**4K/yr+13.1%8.4% conv. - **toyota 4 runner air filter**3K/yr+22.5%7.8% conv. - **fj cruiser air filter**3K/yr+24.7%8.4% conv. [**All search terms **](https://flapen.com/research/us/automotive/4runner-air-filter/search-terms)
## **Top 4runner air 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%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**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**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**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**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**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**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**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**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**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)**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**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**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**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)**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**Carory**$10.75**4.7★**▲ 67%**](https://www.amazon.com/dp/B0G6CRQLV6)
**~~View all trending →~~**
## **What buyers say about 4runner air filter**
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%
## **Common questions**
- **Is 4runner air filter profitable to sell on Amazon United States?**
- The niche generates $68K/yr across 23 tracked products. 3 of 5 products launched in the last 360 days are still selling. 90-day search growth is +8.8%. Flapen's verdict: Worth a look (53/100).
- **How competitive is the 4runner air filter niche?**
- 17 brands and 76 sellers compete. The top 5 products take 52% of clicks and top 5 brands hold 67% of demand.
- **What do buyers complain about in 4runner air filter?**
- Top complaints mined from reviews: Compatibility-Overall, Filtration, Size-Overall. The return rate is 1.8%.
- **When does demand for 4runner air filter peak?**
- Demand peaks in Jan–Feb; the busiest month runs 4.8× the quietest.
- **What does it cost to enter the 4runner air filter niche?**
- Listings span $7.31–$57.81; the average listing price is $21.91 (sweet spot $15–$100). The average incumbent carries 2,204 reviews — the moat a new listing must climb.
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