engine catalytic converter cleaner
Skip itSoft demand (-76.1% this quarter) — this niche doesn't clear our bar today.
Returns
Incredible0.5%return rate — above 5% kills the launch gate
Quality gap
Great4.1★avg incumbent rating — lower means beatable quality
Price range
Great$10.85–$46.47cheapest to priciest tracked listing — scored on the share inside $15–$100
Avg price
Great$18.01avg listing price — sweet spot $15–$100
Brand share
Great58%top-5 brand share — no brand owns this niche
Review moat
Good1,384avg incumbent reviews — the moat a new listing must climb
Competition
Good55%top-5 click share — leaders hold, buyers still browse
Conversion
Okay2.6%search→purchase rate — share of searches ending in a sale
Market size
Bad$21K$21K/yr · 45K searches
Growth
Bad-76.1%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, engine catalytic converter cleaner is a $21K/yr Amazon United States market (45K searches/yr). The top 5 brands hold 58% of demand. Verdict: Skip it — 49/100.
Data updated Jul 9, 2026 · scored weekly · How we score niches
engine catalytic converter cleaner market data
- Units sold / yr
- 3K–4K
- avg 100–250/product
- Revenue / yr
- $54K–$72K
- units × avg price
- Conversion rate
- 2.6%
- Avg BSR
- #63
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 95%
- Out of stock
- 9.0%
- Avg brand age
- 47 months
- Avg seller age
- 179 days
Competition & brand share
The top 5 products take 55% of clicks — established leaders, but buyers still shop beyond them.Brands
17 rising
Sellers
51
Top-5 brand share
58%
Top 20: 100%
Top-5 click share
55%
Top 20: 99%
Open market
34%
- Ciirvoe14%
- hepanio13%
- Vizela11%
- Clussbin11%
- stray poet10%
- BIXMK7%
Demand
Weekly Amazon search volume, last 35 weeks — -76.1% search growth over the last 90 days.Top engine catalytic converter cleaner search terms
- engine catalytic convertor cleaner17K/yr
- engine catalytic converter cleaner19K/yr
- engine catalytic cleaner9K/yr
Top engine catalytic converter cleaner 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 21 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
hepanio 3Pcs Catalytic Converter Cleaner Catalytic Converter Cleaner Kit Auto Parts Engine Exhaust System Pipe Carbon Removal Cleaner Treatment Additive Oil Fuel System Treatment Oil Additive
hepanio$13.904.2★254 rev
Ciirvoe 3Pcs Catalytic Converter Cleaner Kit Boost Up Catalytic Convertor Cleaner Exhaust System Pipe Carbon Removal Cleaner Treatment Additive Oil Fuel System Treatment Oil Additive
Ciirvoe$12.154.2★103 rev
Catalytic Convertor Cleaner 4Pcs Clussbin Catalytic Converter Cleaner Kit Fuel System Treatment Oil Additive
Clussbin$17.130.0★0 rev
stray poet 3Pcs Catalytic Converter Cleaner Catalytic Converter Cleaner Kit Auto Parts Engine Exhaust System Pipe Carbon Removal Cleaner Treatment Additive Oil Fuel System Treatment Oil Additive
stray poet$16.194.1★407 rev
Catalytic Converter Cleaner Auto Parts Engine Exhaust System Pipe Carbon Removal Cleaner Treatment Additive Oil Fuel System Treatment Oil Additive for Gas and Diesel Car(120 ml) (3pcs)
Vizela$13.724.2★278 rev
Newest
by launch date
Ciirvoe 6Pcs Catalytic Converter Cleaner Kit Boost Up Catalytic Convertor Cleaner Exhaust System Pipe Carbon Removal Cleaner Treatment Additive Oil Fuel System Treatment Oil Additive
Ciirvoe$18.15103 rev
Ciirvoe 3Pcs Catalytic Converter Cleaner Kit Boost Up Catalytic Convertor Cleaner Exhaust System Pipe Carbon Removal Cleaner Treatment Additive Oil Fuel System Treatment Oil Additive
Ciirvoe$12.15103 rev
Catalytic Convertor Cleaner 4Pcs Clussbin Catalytic Converter Cleaner Kit Fuel System Treatment Oil Additive
Clussbin$17.130 rev
3PCS Catalytic Converter Cleaner Kit Automotive Engine Cleaner Exhaust System Carbon Deposits Remover Fuel System Treatment Oil Additive
Generic$12.0723 rev
Catalytic Converter Cleaner Auto Parts Engine Exhaust System Pipe Carbon Removal Cleaner Treatment Additive Oil Fuel System Treatment Oil Additive for Gas and Diesel Car(120 ml) (3pcs)
Vizela$13.72278 rev
Trending
90-day click momentumCiirvoe 6Pcs Catalytic Converter Cleaner Kit Boost Up Catalytic Convertor Cleaner Exhaust System Pipe Carbon Removal Cleaner Treatment Additive Oil Fuel System Treatment Oil Additive
Ciirvoe$18.154.2★
Catalytic Convertor Cleaner 4Pcs Clussbin Catalytic Converter Cleaner Kit Fuel System Treatment Oil Additive
Clussbin$17.130.0★
Ciirvoe 3Pcs Catalytic Converter Cleaner Kit Boost Up Catalytic Convertor Cleaner Exhaust System Pipe Carbon Removal Cleaner Treatment Additive Oil Fuel System Treatment Oil Additive
Ciirvoe$12.154.2★
3PCS Catalytic Converter Cleaner Auto Parts Engine Exhaust System Pipe Carbon Removal Cleaner Treatment Additive Oil Fuel System Treatment Oil for Gas and Diesel Car
Omaky$12.633.7★
Charunee 4 Pack Catalytic Converter Cleaner | Gas & Diesel Fuel Additive
Charunee$17.234.1★
What buyers say about engine catalytic converter cleaner
What buyers praise and complain about, mined from review topics.What buyers love
“Effective”
“Great produce”
“Ease of use”
“Excellent value”
“Just as advertised”
“Clean”
“It's done wonders for my fuel system”
“Try it, it may do the job”
“following the easy instructions”
“simple enough for routine maintenance use”
What buyers complain about
“It did not work as described”
“Didn't work as advertised”
“the price was WAY too high”
“Lack of instructions”
“It didnt work for my Escalade or Camry”
“Their product is no good”
“all the chemical leaked out”
“the sensor 2 code went away”
“won't fix”
“can't do much with that being so small”
Top return reasons
Common questions
- Is engine catalytic converter cleaner profitable to sell on Amazon United States?
- The niche generates $21K/yr across 21 tracked products. 3 of 13 products launched in the last 360 days are still selling. 90-day search growth is -76.1%. Flapen's verdict: Skip it (49/100).
- How competitive is the engine catalytic converter cleaner niche?
- 17 brands and 51 sellers compete. The top 5 products take 55% of clicks and top 5 brands hold 58% of demand.
- What do buyers complain about in engine catalytic converter cleaner?
- Top complaints mined from reviews: Functionality-Overall, Advertised Vs Actual Product, Value For Money. The return rate is 0.5%.
- What does it cost to enter the engine catalytic converter cleaner niche?
- Listings span $10.85–$46.47; the average listing price is $18.01 (sweet spot $15–$100). The average incumbent carries 1,384 reviews — the moat a new listing must climb.