---
title: "K&n Cold Air Intake — $5.1M/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/k-n-cold-air-intake"
last_updated: "2026-08-10T23:50:26.135Z"
locale: en
meta:
description: "Niche score 54/100 · $5.1M/yr market · 29.5M searches/yr · $102.30 avg price. Weak search conversion (0.2%) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 54/100 · $5.1M/yr market · 29.5M searches/yr · $102.30 avg price. Weak search conversion (0.2%) keeps it on the watch list. Data updated Jul 2026."
"og:title": "K&n Cold Air Intake — $5.1M/yr Amazon US Niche (2026) - Flapen"
---
# **k&n cold air intake**
**Worth a look**
Shows a $5.1M/yr market, but weak search conversion (0.2%) keeps it on the watch list.
Market size 98Growth 19Conversion 2Competition 82Returns 65Price range 21Avg price 74Brand share 52Review moat 57Quality gap 53
**Market size**
**Incredible****$5.1M**
$5.1M/yr · 29.5M searches
**Competition**
**Great****34%**
top-5 click share — an open shelf
**Avg price**
**Good****$102.30**
avg listing price — sweet spot $15–$100
**Returns**
**Good****2.4%**
return rate — above 5% kills the launch gate
**Review moat**
**Good****1,239.13**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Good****74%**
top-5 brand share — brands hold most of the demand
**Price range**
**Bad****$5.43–$409.55**
cheapest 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**
**Bad****0.2%**
search→purchase rate — share of searches ending in a sale
**Signals**[** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")
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 ~~](https://flapen.com/research/methodology)
## **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.
900K700KSpike '24Holiday '24Black Friday '25Holiday '25 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 2.1×
[**Open Trend **](https://flapen.com/research/us/automotive/k-n-cold-air-intake/trend)
## **Top k&n cold air intake search terms**
- **cold air intake**1.4M/yr-2.6%0.1% conv. - **k&n air filter**449K/yr+0.5%0.8% conv. - **cold air intake kit**375K/yr-23.1%0.1% conv. - **air intake**308K/yr-10.3%0.1% conv. - **intake**187K/yr-17.0%3.6% conv. - **k&n cold air intake**132K/yr-4.8%0.2% conv. - **cold air intake filter**101K/yr+2.7%0.5% conv. - **k and n air filter**98K/yr-4.2%0.8% conv. - **air intake kit**61K/yr-4.3%0.1% conv. - **air intake filter**62K/yr-7.8%0.3% conv. [**All search terms **](https://flapen.com/research/us/automotive/k-n-cold-air-intake/search-terms)
## **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.
0%4%$205K8%$410K12%$615K16%$821K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**DuoDiner Initial K Necklace for Men American Flag Letter K Pendent Chain Stainless Steel Dog Tag Country Military Necklace Jewelry Gifts (Silver)**DuoDiner**$14.46**4.6★717 rev](https://www.amazon.com/dp/B0C6JM633R) [2**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**$35.24**4.6★5,136 rev](https://www.amazon.com/dp/B00AFRIVNQ) [3**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**$39.62**3.9★5,313 rev](https://www.amazon.com/dp/B0C15R4FN8) [4**OKAICEN Fashion Alphabet Initial Letter Keychain Tassel Butterfly Pendant Key Ring for Purse Handbags Women Girl (K)**OKAICEN**$7.99**4.7★3,571 rev](https://www.amazon.com/dp/B08KD6KTLX) [5**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**$57.69**4.4★2,245 rev](https://www.amazon.com/dp/B082VH33Y4)
**~~View all top sellers →~~**
### **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**$131.93**57 rev11mo ago](https://www.amazon.com/dp/B0FD2SFV2P) [**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**$5.80**58 rev1y ago](https://www.amazon.com/dp/B0F1Y6KP3G) [**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**$39.27**280 rev2y ago](https://www.amazon.com/dp/B0DSPFK6FJ) [**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**$58.84**119 rev2y ago](https://www.amazon.com/dp/B0CMWZT2SF) [**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**$13.22**164 rev2y ago](https://www.amazon.com/dp/B0CC1CTNSF)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**OKAICEN Fashion Alphabet Initial Letter Keychain Tassel Butterfly Pendant Key Ring for Purse Handbags Women Girl (K)**OKAICEN**$7.99**4.7★**▲ 225%**](https://www.amazon.com/dp/B08KD6KTLX) [**DuoDiner Initial K Necklace for Men American Flag Letter K Pendent Chain Stainless Steel Dog Tag Country Military Necklace Jewelry Gifts (Silver)**DuoDiner**$14.46**4.6★**▲ 225%**](https://www.amazon.com/dp/B0C6JM633R) [**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**$13.22**4.4★**▲ 222%**](https://www.amazon.com/dp/B0CC1CTNSF) [**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**$55.07**4.8★**▲ 46%**](https://www.amazon.com/dp/B01MU394WL) [**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**$314.58**4.6★**▲ 28%**](https://www.amazon.com/dp/B003CR2ILM)
**~~View all trending →~~**
## **What buyers say about k&n cold air intake**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**11%
*“Clearly made with quality”*
**Size-Overall**9%
*“Fit like a glove”*
**Breathability**8%
*“Breath of fresh air”*
**Value For Money**6%
*“Good value”*
**Sleep Quality**6%
*“improved my sleep”*
**Assembly/Installation**5%
*“Installation took 1 minute”*
**Efficiency**5%
*“effective”*
**Snore Relief**4%
*“Helps with snoring”*
**Sinus Relief**4%
*“this product truly opens your sinuses”*
**Advertised Vs Actual Product**3%
*“As advertised”*
### **What buyers complain about **
**Adhesion/Stickiness**13%
*“Poor adhesion”*
**Value For Money**12%
*“Product is expensive”*
**Functionality-Overall**9%
*“Did not work”*
**Quality-Overall**5%
*“Drop in quality”*
**Size-Overall**5%
*“Does not fit”*
**Breathability**5%
*“making it difficult to breathe”*
**Sleep Quality**3%
*“affected my sleep”*
**Allergies**3%
*“irritated my skin”*
**Ease Of Use**2%
*“Difficult to use”*
**Advertised Vs Actual Product**2%
*“Misleading description”*
### **Top return reasons **
**Size-Overall**30%
**Functionality-Overall**19%
**Adhesion/Stickiness**12%
**Advertised Vs Actual Product**8%
**Breathability**6%
**Compatibility-Overall**5%
**Comfort-Overall**4%
**Filtration**2%
**Value For Money**2%
**Sleep Quality**1%
## **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.
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