4runner air filter
Worth a lookShows searches that convert (13.9% search→purchase), but a small market ($68K/yr) keeps it on the watch list.
Conversion
Incredible13.9%search→purchase rate — share of searches ending in a sale
Avg price
Great$21.91avg listing price — sweet spot $15–$100
Price range
Great$7.31–$57.81cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Great1.8%return rate — above 5% kills the launch gate
Brand share
Good67%top-5 brand share — brands hold most of the demand
Competition
Good52%top-5 click share — leaders hold, buyers still browse
Review moat
Okay2,204.17avg incumbent reviews — the moat a new listing must climb
Growth
Okay+8.8%90-day search growth — must beat 0% to launch
Quality gap
Bad4.7★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
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.Peak months: Jan, Feb · busiest ÷ quietest = 4.8×
Top 4runner air filter search terms
- 4runner air filter9K/yr
- 4runner engine air filter4K/yr
- toyota 4runner air filter4K/yr
- toyota 4 runner air filter3K/yr
- fj cruiser air filter3K/yr
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.
All 23 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
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$18.184.5★180 rev
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$57.814.8★2,048 rev
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$27.414.5★2,399 rev
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$16.114.8★326 rev
Engine Air Filter Compatible with 4Runner V6 (2010-2021) GX460 V8 (2010-2021) FJ Cruiser V6 (2011-2014) Replace# CA10835
KEDAKEJI$16.034.7★385 rev
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$10.75596 rev
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$27.242,399 rev
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$24.405 rev
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$27.412,399 rev
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$28.2747 rev
Trending
90-day click momentumRVgolf 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$27.414.5★
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$22.834.7★
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$27.244.5★
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$28.274.9★
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$10.754.7★
What buyers say about 4runner air filter
What buyers praise and complain about, mined from review topics.What buyers love
“Easy fit”
“Good quality”
“Great filter for price”
“Good Value”
“Easy install”
“As advertised”
“Great to use”
“Keeps the air clean”
“I highly recommend this product to anyone looking to save on routine maintenance”
“Helps maintain engine efficiency”
What buyers complain about
“Doesn't fit an FJ Cruiser”
“length of filter is too short”
“Does not fit”
“Cheaply made”
“Item not as described-did not fit”
“Poor gas mileage”
“someone had put the last one in the wrong direction”
“Twice as thick as the one my stealership uses”
“No difference in mpg or sound as others have mentioned”
“Didnt install it because it feels cheap and flimsy”
Top return reasons
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.