--- title: "oxygen sensor cleaner — Niche Verdict: Skip it (50/100) | Amazon United States - Flapen" canonical_url: "https://flapen.com/amazon/research/us/automotive/oxygen-sensor-cleaner" last_updated: "2026-07-09T23:46:44.467Z" locale: en meta: description: "a small market ($107K/yr) — oxygen sensor cleaner doesn't clear our bar today." "og:description": "a small market ($107K/yr) — oxygen sensor cleaner doesn't clear our bar today." "og:title": "oxygen sensor cleaner — Niche Verdict: Skip it (50/100) | Amazon United States - Flapen" --- Back to Flapen home # **oxygen sensor cleaner** **Skip it****50/100 ** a small market ($107K/yr) — oxygen sensor cleaner doesn't clear our bar today. **Market/yr** **$107K** **Growth (1y)** **+219.3%** **Products** **16** **Brands** **11** was 12 a year ago **Sellers** **138** **Price range** **$7.99–$46.47** **Returns** **0.2%** **Rating** **4.2★** **Skip it** Scored 50/100 across market size, growth, competition, quality gap, and returns. Market sizeGrowthCompetitionQuality gapReturns Market size **5** ×0.30 Growth **79** ×0.30 Competition **38** ×0.20 Quality gap **69** ×0.10 Returns **98** ×0.10 ## **Demand** Weekly Amazon search volume, last 60 weeks — +219.3% year over year. 11K6KSpike '25May '25Jul '25Oct '25Dec '25Feb '26May '26 ## **Seasonality** Monthly demand index across the year — 1.00 is average. JFMAMJJASOND Peak months: Jan, Feb, Aug, Oct, Nov, Dec · busiest ÷ quietest = 10.6× ## **Competition** - CRC27% - AUTOPROFI22% - MotorPower Care17% - Liqui Moly11% - OXiCAT5% - EZ PASS4% - Other (5 brands)14% The top 5 products take 65% of clicks — established leaders, but buyers still shop beyond them. 11 brands and 138 sellers compete here. **Brands** **11 **▼falling was 12 a year ago **Sellers** **138** **Top 5 brand share** **82%** #ProductBrandPriceRatingReviewsClick shareTrend 1 ![CRC Guaranteed to Pass Emissions Test Formula 12 Fluid Ounce](https://m.media-amazon.com/images/I/51exj6oMC5L.jpg) [**CRC Guaranteed to Pass Emissions Test Formula 12 Fluid Ounce**](https://www.amazon.com/dp/B000CIPUR8) CRC$15.103.9★3,50122%▼falling 2 ![AUTOPROFI OXICAT- Oxygen Sensor & Catalytic Converter Cleaner-Engine Fuel & Exhaust- Pack of 2 FOR PREVENTIVE MAINTENANCE](https://m.media-amazon.com/images/I/41ytQwtRS6L.jpg) [**AUTOPROFI OXICAT- Oxygen Sensor & Catalytic Converter Cleaner-Engine Fuel & Exhaust- Pack of 2 FOR PREVENTIVE MAINTENANCE**](https://www.amazon.com/dp/B0BSZJW8M9) AUTOPROFI$33.964.1★38514%▼falling 3 ![Liqui Moly Catalytic System Clean 300 ml 7110. Cleans The Injection System and The Combustion Chamber.](https://m.media-amazon.com/images/I/41cEqZoV8jL.jpg) [**Liqui Moly Catalytic System Clean 300 ml 7110. Cleans The Injection System and The Combustion Chamber.**](https://www.amazon.com/dp/B07Z54MBQ3) Liqui Moly$18.254.4★3,73611%▼falling 4 ![MotorPower Care Catalytic Converter Cleaner Pass Emissions Test & Fix P0420 | Cleans O2 Sensor EGR Valve & Exhaust System | Fuel Additive for Gas & Hybrid Engines 8.45 fl oz](https://m.media-amazon.com/images/I/418wIr2yIDL.jpg) [**MotorPower Care Catalytic Converter Cleaner Pass Emissions Test & Fix P0420 | Cleans O2 Sensor EGR Valve & Exhaust System | Fuel Additive for Gas & Hybrid Engines 8.45 fl oz**](https://www.amazon.com/dp/B07DCYT2F7) MotorPower Care$16.914.1★1,05510%▲rising 5 ![AUTOPROFI OXICAT Oxygen Sensor Catalytic Converter & Turbocharger Cleaner for Preventive Maintenance](https://m.media-amazon.com/images/I/316-LWmKijL.jpg) [**AUTOPROFI OXICAT Oxygen Sensor Catalytic Converter & Turbocharger Cleaner for Preventive Maintenance**](https://www.amazon.com/dp/B01LFXTAE2) AUTOPROFI$13.184.1★3,0138%▼falling 6 ![MotorPower Care Catalytic Converter Cleaner 2-Pack Pass Smog & Emissions Test Fix P0420/P0430 Check Engine Light | O2 Sensor & EGR Cleaner | Fuel Additive 8.45 fl oz Each](https://m.media-amazon.com/images/I/51sGHyaOPwL.jpg) [**MotorPower Care Catalytic Converter Cleaner 2-Pack Pass Smog & Emissions Test Fix P0420/P0430 Check Engine Light | O2 Sensor & EGR Cleaner | Fuel Additive 8.45 fl oz Each**](https://www.amazon.com/dp/B0CDFTF8NK) MotorPower Care$29.974.2★8897%▼falling 7 ![OXiCAT- Oxygen Sensor & Catalytic Converter Cleaner-Engine Fuel & Exhaust- Pack of 2](https://m.media-amazon.com/images/I/41Ggd7Os1bL.jpg) [**OXiCAT- Oxygen Sensor & Catalytic Converter Cleaner-Engine Fuel & Exhaust- Pack of 2**](https://www.amazon.com/dp/B07YX98427) OXiCAT$26.614.0★3085%▲rising 8 ![CRC 05110 Mass Air Flow Sensor Cleaner - 11 Wt Oz.](https://m.media-amazon.com/images/I/41pPmN86ZoL.jpg) [**CRC 05110 Mass Air Flow Sensor Cleaner - 11 Wt Oz.**](https://www.amazon.com/dp/B000J19XSA) CRC$12.144.8★5,2335%▲rising 9 ![Gumout 540041 Professional Formula Mass Air Flow Sensor Cleaner Spray 11 oz Safely Cleans Delicate MAF Sensors to Improve Engine Performance Restore Power Reduce Hesitation and Boost Fuel Economy](https://m.media-amazon.com/images/I/41ZLoWIRJKL.jpg) [**Gumout 540041 Professional Formula Mass Air Flow Sensor Cleaner Spray 11 oz Safely Cleans Delicate MAF Sensors to Improve Engine Performance Restore Power Reduce Hesitation and Boost Fuel Economy**](https://www.amazon.com/dp/B0CGVQQDVF) Gumout$11.434.7★7954%—flat 10 ![WD-40 Specialist Contact Cleaner Spray 11 oz.](https://m.media-amazon.com/images/I/41SfBx1851L.jpg) [**WD-40 Specialist Contact Cleaner Spray 11 oz.**](https://www.amazon.com/dp/B00AF0OFVU) WD-40$7.994.8★17,6533%—flat 11 ![EZ PASS Emissions Treatment | Catalytic Converter & O2 Sensor Cleaner | Emissions System Support | Smog Test Prep | 16 Fl oz 2-Pack](https://m.media-amazon.com/images/I/41nfHylGk9L.jpg) [**EZ PASS Emissions Treatment | Catalytic Converter & O2 Sensor Cleaner | Emissions System Support | Smog Test Prep | 16 Fl oz 2-Pack**](https://www.amazon.com/dp/B0GMYBZXMN) EZ PASS$37.063.5★163%▲rising 12 ![Cataclean Fuel & Exhaust System Cleaner For Gasoline Engines Pass Emissions Tests Clear Check Engine Lights Restores Catalytic Converters and Cleans Fuel Systems 16oz (120007)](https://m.media-amazon.com/images/I/316798QcU5L.jpg) [**Cataclean Fuel & Exhaust System Cleaner For Gasoline Engines Pass Emissions Tests Clear Check Engine Lights Restores Catalytic Converters and Cleans Fuel Systems 16oz (120007)**](https://www.amazon.com/dp/B002BVXM92) Cataclean$27.094.2★15,5382%▼falling 13 ![Cataclean Fuel & Exhaust System Cleaner For Gasoline Engines Pass Emissions Tests Clear Check Engine Lights Restores Catalytic Converters and Cleans Fuel Systems 16oz - Pack of 2 (120019)](https://m.media-amazon.com/images/I/41nTWcYvkIL.jpg) [**Cataclean Fuel & Exhaust System Cleaner For Gasoline Engines Pass Emissions Tests Clear Check Engine Lights Restores Catalytic Converters and Cleans Fuel Systems 16oz - Pack of 2 (120019)**](https://www.amazon.com/dp/B07N7RZ5ZV) Cataclean$46.474.2★15,5382%▼falling 14 ![Red Line 60103 SI-1 Complete Fuel System Cleaner - 15 Ounce- Fuel Injector Cleaner and Carburetor Cleaner for Corrosion Prevention and Injector Valve and Combustion Chamber Deposit Removal](https://m.media-amazon.com/images/I/413HnZCp0nL.jpg) [**Red Line 60103 SI-1 Complete Fuel System Cleaner - 15 Ounce- Fuel Injector Cleaner and Carburetor Cleaner for Corrosion Prevention and Injector Valve and Combustion Chamber Deposit Removal**](https://www.amazon.com/dp/B000CPI5Z0) Red Line$16.174.8★9,6452%▲rising 15 ![Rislone 4720 Cat Complete Fuel Exhaust and Emissions System Cleaner 16.9 oz. | Cleans Catalytic Converter Reduces Emissions & Saves Gas](https://m.media-amazon.com/images/I/511w7IknyJL.jpg) [**Rislone 4720 Cat Complete Fuel Exhaust and Emissions System Cleaner 16.9 oz. | Cleans Catalytic Converter Reduces Emissions & Saves Gas**](https://www.amazon.com/dp/B08SPVQJ6J) Rislone$24.304.1★1,2881%▼falling **~~Showing 15 of 16 — show all ~~** ## **Product shelf** All 16 tracked products in this niche. Top sellersNewestTrending [![CRC Guaranteed to Pass Emissions Test Formula 12 Fluid Ounce](https://m.media-amazon.com/images/I/51exj6oMC5L.jpg)**CRC Guaranteed to Pass Emissions Test Formula 12 Fluid Ounce** CRC**$15.10**3.9★3,501 reviews](https://www.amazon.com/dp/B000CIPUR8) [![AUTOPROFI OXICAT- Oxygen Sensor & Catalytic Converter Cleaner-Engine Fuel & Exhaust- Pack of 2 FOR PREVENTIVE MAINTENANCE](https://m.media-amazon.com/images/I/41ytQwtRS6L.jpg)**AUTOPROFI OXICAT- Oxygen Sensor & Catalytic Converter Cleaner-Engine Fuel & Exhaust- Pack of 2 FOR PREVENTIVE MAINTENANCE** AUTOPROFI**$33.96**4.1★385 reviews](https://www.amazon.com/dp/B0BSZJW8M9) [![Liqui Moly Catalytic System Clean 300 ml 7110. Cleans The Injection System and The Combustion Chamber.](https://m.media-amazon.com/images/I/41cEqZoV8jL.jpg)**Liqui Moly Catalytic System Clean 300 ml 7110. Cleans The Injection System and The Combustion Chamber.** Liqui Moly**$18.25**4.4★3,736 reviews](https://www.amazon.com/dp/B07Z54MBQ3) [![MotorPower Care Catalytic Converter Cleaner Pass Emissions Test & Fix P0420 | Cleans O2 Sensor EGR Valve & Exhaust System | Fuel Additive for Gas & Hybrid Engines 8.45 fl oz](https://m.media-amazon.com/images/I/418wIr2yIDL.jpg)**MotorPower Care Catalytic Converter Cleaner Pass Emissions Test & Fix P0420 | Cleans O2 Sensor EGR Valve & Exhaust System | Fuel Additive for Gas & Hybrid Engines 8.45 fl oz** MotorPower Care**$16.91**4.1★1,055 reviews](https://www.amazon.com/dp/B07DCYT2F7) [![AUTOPROFI OXICAT Oxygen Sensor Catalytic Converter & Turbocharger Cleaner for Preventive Maintenance](https://m.media-amazon.com/images/I/316-LWmKijL.jpg)**AUTOPROFI OXICAT Oxygen Sensor Catalytic Converter & Turbocharger Cleaner for Preventive Maintenance** AUTOPROFI**$13.18**4.1★3,013 reviews](https://www.amazon.com/dp/B01LFXTAE2) [![MotorPower Care Catalytic Converter Cleaner 2-Pack Pass Smog & Emissions Test Fix P0420/P0430 Check Engine Light | O2 Sensor & EGR Cleaner | Fuel Additive 8.45 fl oz Each](https://m.media-amazon.com/images/I/51sGHyaOPwL.jpg)**MotorPower Care Catalytic Converter Cleaner 2-Pack Pass Smog & Emissions Test Fix P0420/P0430 Check Engine Light | O2 Sensor & EGR Cleaner | Fuel Additive 8.45 fl oz Each** MotorPower Care**$29.97**4.2★889 reviews](https://www.amazon.com/dp/B0CDFTF8NK) [![OXiCAT- Oxygen Sensor & Catalytic Converter Cleaner-Engine Fuel & Exhaust- Pack of 2](https://m.media-amazon.com/images/I/41Ggd7Os1bL.jpg)**OXiCAT- Oxygen Sensor & Catalytic Converter Cleaner-Engine Fuel & Exhaust- Pack of 2** OXiCAT**$26.61**4.0★308 reviews](https://www.amazon.com/dp/B07YX98427) [![CRC 05110 Mass Air Flow Sensor Cleaner - 11 Wt Oz.](https://m.media-amazon.com/images/I/41pPmN86ZoL.jpg)**CRC 05110 Mass Air Flow Sensor Cleaner - 11 Wt Oz.** CRC**$12.14**4.8★5,233 reviews](https://www.amazon.com/dp/B000J19XSA) ## **Reviews** What buyers praise and complain about, mined from review topics. ### **What buyers love ** **Efficiency**22% *“Worked Beautifully”* **Quality-Overall**19% *“Great product with a great company standing behind their commitment”* **Ease Of Cleaning**13% *“Cleans Well”* **Advertised Vs Actual Product**10% *“As advertised”* **Value For Money**8% *“Great value”* **Fuel Efficiency**7% *“gets great gas mileage”* **Ease Of Use**6% *“EASY TO USE”* **Functionality-Overall**2% *“It worked quickly”* **Instructions/User Manual/Troubleshooting**2% *“Follow directions”* **Maintenance And Repair**1% *“saved me hundreds of dollars in repairs”* ### **What buyers complain about ** **Functionality-Overall**47% *“No results”* **Value For Money**9% *“the price was WAY too high”* **Sensor**5% *“Had a O2 sensor acting strange in my Toyota rav 4”* **Compatibility-Overall**4% *“it certainly didn't work on my wife's car”* **Durability**3% *“- Check Engine light came back 1 week after the second bottle went in”* **Advertised Vs Actual Product**3% *“Didn't work as advertised”* **Leak-Proof**3% *“Damaged and Leaked after the delivered”* **Spray/Flow**2% *“Spray straw crumbled”* **Maintenance And Repair**2% *“Shop told me they had to replace it”* **Jamming/Clogging**2% *“or the cat is clogged”* #### **Top return reasons**- Leak-Proof30% - Functionality-Overall16% - Value For Money10% - Advertised Vs Actual Product10% - Compatibility-Overall9% - Defective Material/Parts7% - Size-Overall2% - Fuel Efficiency2% - Maintenance And Repair2% - Instructions/User Manual/Troubleshooting2%