k&n cold air intake
Worth a lookShows a $5.1M/yr market, but weak search conversion (0.2%) keeps it on the watch list.
Market size
Incredible$5.1M$5.1M/yr · 29.5M searches
Competition
Great34%top-5 click share — an open shelf
Avg price
Good$102.30avg listing price — sweet spot $15–$100
Returns
Good2.4%return rate — above 5% kills the launch gate
Review moat
Good1,239.13avg incumbent reviews — the moat a new listing must climb
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Brand share
Good74%top-5 brand share — brands hold most of the demand
Price range
Bad$5.43–$409.55cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Bad-12.8%90-day search growth — must beat 0% to launch
Conversion
Bad0.2%search→purchase rate — share of searches ending in a sale
According to Flapen's Amazon United States niche tracking, k&n cold air intake is a $5.1M/yr Amazon United States market (29.5M searches/yr). The top 5 brands hold 74% of demand. Verdict: Worth a look — 54/100.
Data updated Jul 9, 2026 · scored weekly · How we score niches
k&n cold air intake market data
- Units sold / yr
- 40K–50K
- avg 250–500/product
- Revenue / yr
- $4.1M–$5.1M
- units × avg price
- Conversion rate
- 0.2%
- Avg BSR
- #576
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 85%
- Out of stock
- 0.9%
- Avg brand age
- 49 months
- Avg seller age
- 154 days
Competition & brand share
Clicks spread well past the top 5 (34% combined) — an open shelf where new products get seen.Brands
20 falling
Sellers
81
Top-5 brand share
74%
Top 20: 100%
Top-5 click share
34%
Top 20: 68%
Open market
21%
- K&N38%
- DuoDiner14%
- intake11%
- MOOSUN6%
- OKAICEN5%
- Rough Country5%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -12.8% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 2.1×
Top k&n cold air intake search terms
- cold air intake1.4M/yr
- k&n air filter449K/yr
- cold air intake kit375K/yr
- air intake308K/yr
- intake187K/yr
- k&n cold air intake132K/yr
- cold air intake filter101K/yr
- k and n air filter98K/yr
- air intake kit61K/yr
- air intake filter62K/yr
Top k&n cold air intake 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 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
DuoDiner Initial K Necklace for Men American Flag Letter K Pendent Chain Stainless Steel Dog Tag Country Military Necklace Jewelry Gifts (Silver)
DuoDiner$14.464.6★717 rev
K&N High-Flow Original Lifetime Universal Clamp-On Air Filter: High Performance Premium: Flange Diameter: 4 In Filter Height: 5.5 In Flange Length: 1.125 In Shape: Round Tapered RG-1001RD
K&N$35.244.6★5,136 rev
Intake Breathing Magnetic Nasal Strips Starter Kit | Reusable Band + Tabs | Nasal Strips for Sleep Snoring Breathing & Sports | Stronger Lift Than Traditional Nose Strips | 4 Sizes 15 Tabs Black
intake$39.623.9★5,313 rev
OKAICEN Fashion Alphabet Initial Letter Keychain Tassel Butterfly Pendant Key Ring for Purse Handbags Women Girl (K)
OKAICEN$7.994.7★3,571 rev
MOOSUN 4 inch Cold Air Intake Black Tube + Heat Shield for 1999-2006 GMC/Chevy V8 4.8L/5.3L/6.0L Silverado 1500/2500/3500 Black
MOOSUN$57.694.4★2,245 rev
Newest
by launch date
EVIL ENERGY Cold Air Intake Compatible for 2014-2018 Chevy Silverado 1500/GMC Sierra 1500 5.3L/6.2L Increases Horsepower Towing Performance & Acceleration Includes Heat Shield & Pre-Filter Black
EVIL ENERGY$131.9357 rev
DUSCOKE 1 Car Air Intake Filter 25mm Auto Crankcase Cold Air Filter Cleaner with Adjustable Clamp Universal Vent Valve Cover Breather for Car Motorcycle (Red)
DUSCOKE$5.8058 rev
PHILTOP 3 Cold Air Intake Kit System Compatible with Toyota Camry Celica GT Avalon Corolla Honda CR-V Civic EP3 Accord Mini Cooper Naturally Aspirated R56 Wrangler Volkswagen CC High Performance Red
PHILTOP$39.27280 rev
4 inch Cold Air Intake Kit with Heat Shield Replacement For Silverado 1500 2500 3500 1999-2006 Replacement For GMC For Chevy Sierra V8 4.8L 5.3L 6.0L 1999 2000 2001 2002 2003 2004 2005 2006
LDMINDA$58.84119 rev
SKQIR initial Letter Necklaces for Men 14K Gold Plated K Square Pandent Letter Necklace for Women Cross Necklace with Letter chain Pendant for Boys
SKQIR$13.22164 rev
Trending
90-day click momentumOKAICEN Fashion Alphabet Initial Letter Keychain Tassel Butterfly Pendant Key Ring for Purse Handbags Women Girl (K)
OKAICEN$7.994.7★
DuoDiner Initial K Necklace for Men American Flag Letter K Pendent Chain Stainless Steel Dog Tag Country Military Necklace Jewelry Gifts (Silver)
DuoDiner$14.464.6★
SKQIR initial Letter Necklaces for Men 14K Gold Plated K Square Pandent Letter Necklace for Women Cross Necklace with Letter chain Pendant for Boys
SKQIR$13.224.4★
K&N High-Flow Original Lifetime Engine Air Filter: Increase Power: Washable: Compatible with 2017-2026 HYUNDIA/KIA: Elantra I30 Kona Veloster Cerato Forte ProCeed Seltos Soul Xceed 33-5050
K&N$55.074.8★
K&N Cold Air Intake System: High-Flow Air Filter Increase Performance & Towing: Compatible with 2009-2023 RAM/DODGE 1500 Classic 1500 2500 3500 63-1561
K&N$314.584.6★
What buyers say about k&n cold air intake
What buyers praise and complain about, mined from review topics.What buyers love
“Clearly made with quality”
“Fit like a glove”
“Breath of fresh air”
“Good value”
“improved my sleep”
“Installation took 1 minute”
“effective”
“Helps with snoring”
“this product truly opens your sinuses”
“As advertised”
What buyers complain about
“Poor adhesion”
“Product is expensive”
“Did not work”
“Drop in quality”
“Does not fit”
“making it difficult to breathe”
“affected my sleep”
“irritated my skin”
“Difficult to use”
“Misleading description”
Top return reasons
Common questions
- Is k&n cold air intake profitable to sell on Amazon United States?
- The niche generates $5.1M/yr across 54 tracked products. 3 of 4 products launched in the last 360 days are still selling. 90-day search growth is -12.8%. Flapen's verdict: Worth a look (54/100).
- How competitive is the k&n cold air intake niche?
- 20 brands and 81 sellers compete. The top 5 products take 34% of clicks and top 5 brands hold 74% of demand.
- What do buyers complain about in k&n cold air intake?
- Top complaints mined from reviews: Adhesion/Stickiness, Value For Money, Functionality-Overall. The return rate is 2.4%.
- When does demand for k&n cold air intake peak?
- Demand is steady year-round — the busiest month runs 2.1× the quietest.
- What does it cost to enter the k&n cold air intake niche?
- Listings span $5.43–$409.55; the average listing price is $102.30 (sweet spot $15–$100). The average incumbent carries 1,239 reviews — the moat a new listing must climb.