donaldson p821575 air filter
Worth a lookShows searches that convert (16.3% search→purchase), but a concentrated shelf (top 5 take 80% of clicks) keeps it on the watch list.
Conversion
Incredible16.3%search→purchase rate — share of searches ending in a sale
Returns
Incredible0.9%return rate — above 5% kills the launch gate
Avg price
Incredible$24.51avg listing price — sweet spot $15–$100
Price range
Incredible$15.12–$58.94cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Great189.9avg incumbent reviews — the moat a new listing must climb
Growth
Good+32.0%90-day search growth — must beat 0% to launch
Brand share
Okay86%top-5 brand share — brands hold most of the demand
Market size
Bad$97K$97K/yr · 24K searches
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Competition
Bad80%top-5 click share — a locked-up shelf
According to Flapen's Amazon United States niche tracking, donaldson p821575 air filter is a $97K/yr Amazon United States market (24K searches/yr). The top 5 brands hold 86% of demand. Demand peaks in Mar–Apr–May. Verdict: Worth a look — 53/100.
Data updated Jul 9, 2026 · scored weekly · How we score niches
donaldson p821575 air filter market data
- Units sold / yr
- 5K–6K
- avg 250–500/product
- Revenue / yr
- $123K–$147K
- units × avg price
- Conversion rate
- 16.3%
- Avg BSR
- #1,808
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 90%
- Out of stock
- 0.6%
- Avg brand age
- 30 months
- Avg seller age
- 177 days
Competition & brand share
The top 5 products capture 80% of clicks — a locked-up shelf that new listings rarely crack.Brands
8 falling
Sellers
27
Top-5 brand share
86%
Top 20: 100%
Top-5 click share
80%
Top 20: 100%
Open market
6%
- Donaldson31%
- Deflife23%
- C-Tzu14%
- Aftermarket Filtration Experts9%
- Hipa9%
- Generic8%
- Open — no brand owns it (2 brands, 6%)
Demand & seasonality
Weekly Amazon search volume, last 103 weeks — +32.0% search growth over the last 90 days.Peak months: Mar, Apr, May · busiest ÷ quietest = 8.3×
Top donaldson p821575 air filter search terms
- donaldson p821575 air filter11K/yr
- p8215756K/yr
- donaldson p8215754K/yr
- p821575 air filter3K/yr
Top donaldson p821575 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 10 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Donaldson P821575 Primary Radial Seal Air Filter
Donaldson$20.694.8★485 rev
For Kawasaki 11013-7044 & 11013-7045 Inner & Outer Air Filter Cleaners Combo OEM for Donaldson Kohler 25-083-01-S P821575 & P822858
Deflife$15.664.8★672 rev
P821575 & P822858 Outer Air Filter & Inner Filter 11013-7044 & 11013-7045 Compatible with Donaldson FPG05 Air Cleaners Replaces #6672467 6672468 PM252Z PM260Z
C-Tzu$15.574.3★37 rev
Hipa P821575 P822858 Outer Inner Air Filter for Donaldson FPG05 New Holland TC30 TC33D T1520 TC29D Kubota L3130 L4600 L3940 L3940 L3300
Hipa$17.424.6★247 rev
C-Tzu P821575 & P822858 Outer Air Filter & Inner Filter Compatible with Donaldson FPG05 Air Cleaners
Generic$15.654.6★119 rev
Newest
by launch dateP821575 & P822858 Outer Air Filter & Inner Filter 11013-7044 & 11013-7045 Compatible with Donaldson FPG05 Air Cleaners Replaces #6672467 6672468 PM252Z PM260Z
C-Tzu$15.5737 rev
2 Sets P821575 & P822858 Outer Air Filter & Inner Filter Compatible with Donaldson FPG05 Air Cleaners Replaces 6672467 6672468
C-Tzu$24.9918 rev
P821575 & P822858 Outer Inner Air Filter Air Cleaner for Bobcat FPG05 Air Cleaners Replaces# 6672467 6672468 PM252Z PM260Z
X4XZ$15.12109 rev
C-Tzu P821575 & P822858 Outer Air Filter & Inner Filter Compatible with Donaldson FPG05 Air Cleaners
Generic$15.65119 rev
Hipa P821575 P822858 Outer Inner Air Filter for Donaldson FPG05 New Holland TC30 TC33D T1520 TC29D Kubota L3130 L4600 L3940 L3940 L3300
Hipa$17.42247 rev
Trending
90-day click momentum
Donaldson P821575 Air Filter Primary (Pack of 3)
Aftermarket Filtration Experts$58.945.0★
For Kawasaki 11013-7044 & 11013-7045 Inner & Outer Air Filter Cleaners Combo OEM for Donaldson Kohler 25-083-01-S P821575 & P822858
Deflife$15.664.8★
Donaldson P821575 Air Filter Primary (Pack of 2)
Aftermarket Filtration Experts$35.734.9★
Hipa P821575 P822858 Outer Inner Air Filter for Donaldson FPG05 New Holland TC30 TC33D T1520 TC29D Kubota L3130 L4600 L3940 L3940 L3300
Hipa$17.424.6★
2sets Air Filters Fit for Donaldson P821575 & P822858 Kawasaki 11013-7044 11013-7045 Briggs & Stratton 841497 821136 Fleetguard AF25551 AF25552
OLIFANT$25.324.7★
What buyers say about donaldson p821575 air filter
What buyers praise and complain about, mined from review topics.What buyers love
“Fit perfect”
“Exact air filter”
“Good quality”
“Great product reasonably priced”
“Worked and appeared oem”
“Work perfectly”
“easy to install”
“Clean machine”
What buyers complain about
“The inner filter seldom encounters dirt”
“False advertising”
“This filter does not fit the Kubota L3300”
Top return reasons
Common questions
- Is donaldson p821575 air filter profitable to sell on Amazon United States?
- The niche generates $97K/yr across 10 tracked products. 90-day search growth is +32.0%. Flapen's verdict: Worth a look (53/100).
- How competitive is the donaldson p821575 air filter niche?
- 8 brands and 27 sellers compete. The top 5 products take 80% of clicks and top 5 brands hold 86% of demand.
- What do buyers complain about in donaldson p821575 air filter?
- Top complaints mined from reviews: Filtration, Advertised Vs Actual Product, Compatibility-Overall. The return rate is 0.9%.
- When does demand for donaldson p821575 air filter peak?
- Demand peaks in Mar–Apr–May; the busiest month runs 8.3× the quietest.
- What does it cost to enter the donaldson p821575 air filter niche?
- Listings span $15.12–$58.94; the average listing price is $24.51 (sweet spot $15–$100). The average incumbent carries 190 reviews — the moat a new listing must climb.