---
title: "P621725 — $90K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/p621725"
last_updated: "2026-08-10T09:24:35.780Z"
locale: en
meta:
description: "Niche score 55/100 · $90K/yr market · 15K searches/yr · $56.75 avg price. Soft demand (-11.3% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 55/100 · $90K/yr market · 15K searches/yr · $56.75 avg price. Soft demand (-11.3% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:title": "P621725 — $90K/yr Amazon US Niche (2026) - Flapen"
---
# **p621725**
**Worth a look**
Shows a thin review moat (17 avg reviews), but soft demand (-11.3% this quarter) keeps it on the watch list.
Market size 22Growth 19Conversion 88Competition 48Returns 99Price range 66Avg price 91Brand share 74Review moat 99Quality gap 27
**Review moat**
**Incredible****17.43**
avg incumbent reviews — the moat a new listing must climb
**Returns**
**Incredible****0.2%**
return rate — above 5% kills the launch gate
**Avg price**
**Great****$56.75**
avg listing price — sweet spot $15–$100
**Conversion**
**Great****10.2%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Good****61%**
top-5 brand share — brands hold most of the demand
**Price range**
**Good****$24.06–$139.79**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Okay****56%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Market size**
**Bad****$90K**
$90K/yr · 15K searches
**Growth**
**Bad****-11.3%**
90-day search growth — must beat 0% to launch
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500") [** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50") [** Out of Stock**](https://flapen.com/research/niches?market=us&signal=out_of_stock "OOS rate > 10%")
According to Flapen's Amazon United States niche tracking, p621725 is a $90K/yr Amazon United States market (15K searches/yr). The top 5 brands hold 61% of demand. Demand peaks in Aug. Verdict: Worth a look — 55/100.
Data updated Jul 9, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **p621725 market data**
- **Units sold / yr**
- **2K–3K**
- avg 100–250/product
- **Revenue / yr**
- **$114K–$142K**
- units × avg price
- **Conversion rate**
- **10.2%**
- **Avg BSR**
- **#3,618**
- **Page quality**
- **0%**
- **Prime**
- **71%**
- **Sponsored**
- **95%**
- **Out of stock**
- **3.9%**
- **Avg brand age**
- **18 months**
- **Avg seller age**
- **241 days**
## **Competition & brand share**
The top 5 products take 56% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**18 **▲rising
**Sellers**
**20**
**Top-5 brand share**
**61%**
Top 20: 100%
**Top-5 click share**
**56%**
Top 20: 100%
**Open market**
**34%**
- SOKAKOSC24% - Delorin12% - Pnkauto9% - ZHMUYAOJY8% - LEVANLIGHT8% - muge racing6%
## **Demand & seasonality**
Weekly Amazon search volume, last 97 weeks — -11.3% search growth over the last 90 days.
450350Spike '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Aug · busiest ÷ quietest = 2.2×
[**Open Trend **](https://flapen.com/research/us/automotive/p621725/trend)
## **Top p621725 search terms**
- **p621725**5K/yr-4.1%8.8% conv. - **kenworth t680 air filter**5K/yr-8.9%5.4% conv. - **peterbilt 579 air filter**5K/yr-20.3%6.5% conv. [**All search terms **](https://flapen.com/research/us/automotive/p621725/search-terms)
## **Top p621725 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%$9K20%$18K30%$27K40%$36K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)2 products missing review or click data not plotted
All 21 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**P621725 Engine Air Filter Fit for Kenworth T680 T880 Peterbilt 567 579 Replaces LAF6725 P637453 PA32000 WA11058 501058**SOKAKOSC**$55.98**4.7★137 rev](https://www.amazon.com/dp/B0FKXZBHV3) [2**Delorin P621725 Air Filter Compatible with Kenworth T680 T880 Peterbilt 567 579 Models Replaces LAF6725 P637453 PA32000 WA11058 501058**Delorin**$55.26**4.9★10 rev](https://www.amazon.com/dp/B0G1RD2H7H) [3**P621725 Engine Air Filter Compatible With Kenworth T680 T880 Peterbilt 567 579 Replace# P637453 PA32000 LAF6725 WA11058 501058**LEVANLIGHT**$59.72**4.8★8 rev](https://www.amazon.com/dp/B0FPQLBW59) [4**P621725 Engine Air Filter for 15-20 Kenworth T680/T880 15-20 Peterbilt 567/579 Compatible with Kenworth T680/T880 Peterbilt 567/569 Engine Paccar MX13/MX11 CUM-MINS X15 Replaces LAF6725**ZHMUYAOJY**$139.79**4.5★13 rev](https://www.amazon.com/dp/B0GSVZBP49) [5**P621725 Engine Air Filter Fit for Kenworth T680 T880 Peterbilt 567 579 Replaces LAF6725 P637453 PA32000 WA11058 501058**muge racing**$54.67**3.8★6 rev](https://www.amazon.com/dp/B0FXWJDSND)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**P621725 Engine Air Filter for 15-20 Kenworth T680/T880 15-20 Peterbilt 567/579 Compatible with Kenworth T680/T880 Peterbilt 567/569 Engine Paccar MX13/MX11 CUM-MINS X15 Replaces LAF6725**ZHMUYAOJY**$139.79**13 rev3mo ago](https://www.amazon.com/dp/B0GSVZBP49) [**P621725 Engine Air Filter Compatible With Ken-worth T680 T880 Replacement for P621725 PA32000 P637453 LAF6725 P637453**Bounprem**$35.06**5 rev4mo ago](https://www.amazon.com/dp/B0G41P5NYV) [**P621725 Engine Air Filters Compatible With Kenworth T680 T880 Peterbilt 567 579 Paccar MX-11 MX-13 Engines Replacement LAF6725 P637453 PA32000 WA11058 501058**Tygeacen**$54.68**1 rev5mo ago](https://www.amazon.com/dp/B0GLF5CKKP) [**P621725 Engine Air Filter Fit for Kenworth T680 T880 Peterbilt 567 579 Replaces P637453 PA32000 LAF6725 WA11058 501058 1 PCS**MYLSAUTO**$54.81**3 rev5mo ago](https://www.amazon.com/dp/B0GL232952) [**P621725 Engine Air Filter Fit for Kenworth T680 T880 Peterbilt 567 579 can be replaced with LAF6725 P637453 PA32000 WA11058 501058 (1 PCS blue)**Generic**$42.83**0 rev6mo ago](https://www.amazon.com/dp/B0GX9HWS3L)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Upgraded Engine Air Filter for Kenworth T680/T880 Peterbilt 567/579 Replaces # P621725 LAF6725 P637453 PA32000 WA11058 501058 (White)**Pnkauto**$48.35**3.5★**▲ 246%**](https://www.amazon.com/dp/B0FXRFMBG8) [**Upgrade Engine Air Filter for Kenworth T680/T880 Peterbilt 567/579 Replaces # P621725 LAF6725 P637453 PA32000 WA11058 501058 (Yellow)**Pnkauto**$50.65**4.3★**▲ 246%**](https://www.amazon.com/dp/B0FXRBJ5FD) [**P621725 Engine Air Filter for 15-20 Kenworth T680/T880 15-20 Peterbilt 567/579 Compatible with Kenworth T680/T880 Peterbilt 567/569 Engine Paccar MX13/MX11 CUM-MINS X15 Replaces LAF6725**ZHMUYAOJY**$139.79**4.5★**▲ 245%**](https://www.amazon.com/dp/B0GSVZBP49) [**P621725 Engine Air Filter Fit for Kenworth T680 T880 Peterbilt 567 579 can be replaced with LAF6725 P637453 PA32000 WA11058 501058 (1 PCS blue)**Generic**$42.83**0.0★**▲ 245%**](https://www.amazon.com/dp/B0GX9HWS3L) [**Upgraded Engine Air Filter for Kenworth T680/T880 Peterbilt 567/579 Replaces #P621725 LAF6725 P637453 PA32000 WA11058 501058 (Blue)**Pnkauto**$52.08**4.3★**▲ 207%**](https://www.amazon.com/dp/B0FXRGMRZY)
**~~View all trending →~~**
## **What buyers say about p621725**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**36%
*“Excellent fit”*
**Quality-Overall**24%
*“Im very satisfied with the performance”*
**Value For Money**21%
*“Definitely worth it”*
**Filtration**12%
*“Air filter good”*
**Efficiency**3%
*“It work's grate”*
**Assembly/Installation**3%
*“Was easy to install”*
### **What buyers complain about **
**Filtration**100%
*“DO NOT BUY THIS FILTER”*
### **Top return reasons **
**Size-Overall**37%
**Filtration**17%
**Compatibility-Overall**17%
**Advertised Vs Actual Product**7%
**Quality-Overall**5%
**Functionality-Overall**5%
**Value For Money**3%
**Rubber Quality**3%
**Thin**2%
**Shape/Style**2%
## **Common questions**
- **Is p621725 profitable to sell on Amazon United States?**
- The niche generates $90K/yr across 21 tracked products. 8 of 18 products launched in the last 360 days are still selling. 90-day search growth is -11.3%. Flapen's verdict: Worth a look (55/100).
- **How competitive is the p621725 niche?**
- 18 brands and 20 sellers compete. The top 5 products take 56% of clicks and top 5 brands hold 61% of demand.
- **What do buyers complain about in p621725?**
- Top complaints mined from reviews: Filtration. The return rate is 0.2%.
- **When does demand for p621725 peak?**
- Demand peaks in Aug; the busiest month runs 2.2× the quietest.
- **What does it cost to enter the p621725 niche?**
- Listings span $24.06–$139.79; the average listing price is $56.75 (sweet spot $15–$100). The average incumbent carries 17 reviews — the moat a new listing must climb.
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