---
title: "o2 sensor — Niche Verdict: Worth a look (67/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/automotive/o2-sensor"
last_updated: "2026-07-13T22:35:29.684Z"
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meta:
  description: "o2 sensor shows a $3.5M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list."
  "og:description": "o2 sensor shows a $3.5M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list."
  "og:title": "o2 sensor — Niche Verdict: Worth a look (67/100) | Amazon United States - Flapen"
---

Back to Flapen home

# **o2 sensor**

**Worth a look**

Shows a $3.5M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size 96Growth 17Conversion 31Competition 85Returns 72Price range 88Avg price 95Brand share 85Review moat 23Quality gap 80

**Market size**

**Incredible****$3.5M**

$3.5M/yr · 3.9M searches

**Avg price**

**Incredible****$36.54**

avg listing price — sweet spot $15–$100

**Price range**

**Great****$9.70–$70.11**

cheapest to priciest tracked listing — scored on the share inside $15–$100

**Competition**

**Great****30%**

top-5 click share — an open shelf

**Brand share**

**Great****50%**

top-5 brand share — no brand owns this niche

**Quality gap**

**Great****4.2★**

avg incumbent rating — lower means beatable quality

**Returns**

**Good****2.1%**

return rate — above 6% kills the launch gate

**Conversion**

**Okay****2.5%**

search→purchase rate — share of searches ending in a sale

**Review moat**

**Bad****6,804.69**

avg incumbent reviews — the moat a new listing must climb

**Growth**

**Bad****-15.5%**

90-day search growth — must beat 0% to launch

## **Competition**

Clicks spread well past the top 5 (30% combined) — an open shelf where new products get seen.

**Brands**

**35 **▼falling

**Sellers**

**107**

**Top-5 brand share**

**50%**

**Open market**

**44%**

- Gledewen13% - Denso12% - Bosch10% - ACAUTO8% - BLPextrm7% - A-Premium6%

## **Product shelf**

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%4%$140K8%$280K12%$420K16%$559K101001K10K100K1.0M Reviews — right = deep review moatMarket share (90d) ≈ est. sales

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 68 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![Oxygen Sensor Upstream Downstream O2 2Pcs | Compatible with Ford F150 F250 Ranger Expedition Explorer Escape Mazda Tribute Lincoln & More Replace# 15717 15716 15664 ZZC318861](https://m.media-amazon.com/images/I/31qGQNzSNxL.jpg)**Oxygen Sensor Upstream Downstream O2 2Pcs | Compatible with Ford F150 F250 Ranger Expedition Explorer Escape Mazda Tribute Lincoln & More Replace# 15717 15716 15664 ZZC318861**Gledewen**$29.22**4.3★2,644 rev](https://www.amazon.com/dp/B07SVYNWRK) [2![Oxygen O2 Sensor Upstream Downstream for Chry 300 for Dodge Challenger Charger Dakota Durango Grand Caravan Journey Neon Nitro for Jeep Commander Grand Cherokee Wrangler JK 56028994AA 56028994AB](https://m.media-amazon.com/images/I/41YamW8Od4L.jpg)**Oxygen O2 Sensor Upstream Downstream for Chry 300 for Dodge Challenger Charger Dakota Durango Grand Caravan Journey Neon Nitro for Jeep Commander Grand Cherokee Wrangler JK 56028994AA 56028994AB**BLPextrm**$47.53**4.0★360 rev](https://www.amazon.com/dp/B09HK8SF9J) [3![ACAUTO 4Pcs 15717 Oxygen O2 Sensor Upstream Downstream Fit for Ford F-150 F250 F350 Ranger Escape Explorer Mustang Foucs Expedition Mazda Lincoln Jaguar Mercury Aston Martin 15716 15718](https://m.media-amazon.com/images/I/41CzZYF8IRL.jpg)**ACAUTO 4Pcs 15717 Oxygen O2 Sensor Upstream Downstream Fit for Ford F-150 F250 F350 Ranger Escape Explorer Mustang Foucs Expedition Mazda Lincoln Jaguar Mercury Aston Martin 15716 15718**ACAUTO**$39.38**4.3★234 rev](https://www.amazon.com/dp/B0CQYL5N73) [4![Denso Oxygen (O2) Sensor - 234-4622 (Fits Select Years of Lexus: ES300(h)/NX200t/NX300(h) Pontiac Vibe and Toyota: 4Runner/Avalon/Camry/Corolla/Matrix/Paseo/RAV4/Sienna/Solara/Tercel Vehicles)](https://m.media-amazon.com/images/I/21DUhF49uPL.jpg)**Denso Oxygen (O2) Sensor - 234-4622 (Fits Select Years of Lexus: ES300(h)/NX200t/NX300(h) Pontiac Vibe and Toyota: 4Runner/Avalon/Camry/Corolla/Matrix/Paseo/RAV4/Sienna/Solara/Tercel Vehicles)**Denso**$52.07**4.4★1,241 rev](https://www.amazon.com/dp/B000C5SGA4) [5![Walker Products 350-34039 Oxygen Sensor 4-Wire Direct Fit (Original Equipment Replacement O2 Sensor)](https://m.media-amazon.com/images/I/31Ml7VkpkxL.jpg)**Walker Products 350-34039 Oxygen Sensor 4-Wire Direct Fit (Original Equipment Replacement O2 Sensor)**Walker Products**$28.05**4.4★669 rev](https://www.amazon.com/dp/B01IAFTUDO)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![4PCS Oxygen O2 Sensor Upstream Downstream 234-4587 for Jeep Liberty Grand Cherokee Wrangler JK Chry 300 Dodge Dokota Charger Challenger Grand Caravan Journey Durango 3.7L Ram 1500 2001-2023 250-24253](https://m.media-amazon.com/images/I/418YB2yKqXL.jpg)**4PCS Oxygen O2 Sensor Upstream Downstream 234-4587 for Jeep Liberty Grand Cherokee Wrangler JK Chry 300 Dodge Dokota Charger Challenger Grand Caravan Journey Durango 3.7L Ram 1500 2001-2023 250-24253**QIYBONE**$49.11**10 rev3mo ago](https://www.amazon.com/dp/B0GVTK4CYJ) [![2PCS Oxygen O2 Sensor Upstream Downstream 234-4587 for Jeep Liberty Grand Cherokee Wrangler JK Chry 300 Dodge Dokota Charger Challenger Grand Caravan Journey Durango 3.7L Ram 1500 2001-2023 250-24253](https://m.media-amazon.com/images/I/41gRqVR0zEL.jpg)**2PCS Oxygen O2 Sensor Upstream Downstream 234-4587 for Jeep Liberty Grand Cherokee Wrangler JK Chry 300 Dodge Dokota Charger Challenger Grand Caravan Journey Durango 3.7L Ram 1500 2001-2023 250-24253**QIYBONE**$28.53**16 rev4mo ago](https://www.amazon.com/dp/B0GGGWHK9X) [![Oxygen O2 Sensor Upstream and Downstream for Dodge Avenger Caravan Charger Dakota Grand Caravan Nitro Stratus for Jeep Cherokee Commander Grand Wrangler JK for Chry 200 Replace 56028994AA 4Pcs](https://m.media-amazon.com/images/I/41pG94HINsL.jpg)**Oxygen O2 Sensor Upstream and Downstream for Dodge Avenger Caravan Charger Dakota Grand Caravan Nitro Stratus for Jeep Cherokee Commander Grand Wrangler JK for Chry 200 Replace 56028994AA 4Pcs**LuxOxyPro**$46.80**36 rev1y ago](https://www.amazon.com/dp/B0FFT7BCJ9) [![AdvanEX 234-4337 Oxygen O2 Sensor Upstream or Downstream Compatible with Buick Cadillac Chevrolet GMC Hammer Isuzu Oldsmobile Pontiac Saab Saturn Replaces 12578459 234-4087 2PCS](https://m.media-amazon.com/images/I/31+ZSQPzZ0L.jpg)**AdvanEX 234-4337 Oxygen O2 Sensor Upstream or Downstream Compatible with Buick Cadillac Chevrolet GMC Hammer Isuzu Oldsmobile Pontiac Saab Saturn Replaces 12578459 234-4087 2PCS**AdvanEX**$28.17**31 rev1y ago](https://www.amazon.com/dp/B0F5GS91Q2) [![HTMXJA 4Pcs Upstream and Downstream Oxygen O2 Sensor for Edge 3.7L 3.5L 11-14 Explorer 3.5L 11-15 F-150 3.7L 11-14 Escape 3.0L 10-12 Fusion 3.0L 10-12 CX-9 3.7L 11-15 .OE#234-5038 234-4490](https://m.media-amazon.com/images/I/41bwbyDS93L.jpg)**HTMXJA 4Pcs Upstream and Downstream Oxygen O2 Sensor for Edge 3.7L 3.5L 11-14 Explorer 3.5L 11-15 F-150 3.7L 11-14 Escape 3.0L 10-12 Fusion 3.0L 10-12 CX-9 3.7L 11-15 .OE#234-5038 234-4490**HTMXJA**$60.92**51 rev1y ago](https://www.amazon.com/dp/B0F8GT7R14)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![4PCS Oxygen O2 Sensor Upstream Downstream 234-4587 for Jeep Liberty Grand Cherokee Wrangler JK Chry 300 Dodge Dokota Charger Challenger Grand Caravan Journey Durango 3.7L Ram 1500 2001-2023 250-24253](https://m.media-amazon.com/images/I/418YB2yKqXL.jpg)**4PCS Oxygen O2 Sensor Upstream Downstream 234-4587 for Jeep Liberty Grand Cherokee Wrangler JK Chry 300 Dodge Dokota Charger Challenger Grand Caravan Journey Durango 3.7L Ram 1500 2001-2023 250-24253**QIYBONE**$49.11**4.4★**▲ 329%**](https://www.amazon.com/dp/B0GVTK4CYJ) [![2PCS Oxygen O2 Sensor Upstream Downstream 234-4587 for Jeep Liberty Grand Cherokee Wrangler JK Chry 300 Dodge Dokota Charger Challenger Grand Caravan Journey Durango 3.7L Ram 1500 2001-2023 250-24253](https://m.media-amazon.com/images/I/41gRqVR0zEL.jpg)**2PCS Oxygen O2 Sensor Upstream Downstream 234-4587 for Jeep Liberty Grand Cherokee Wrangler JK Chry 300 Dodge Dokota Charger Challenger Grand Caravan Journey Durango 3.7L Ram 1500 2001-2023 250-24253**QIYBONE**$28.53**3.4★**▲ 219%**](https://www.amazon.com/dp/B0GGGWHK9X) [![EXPEDE 234-4668 4pcs Upstream Downstream Sensors O2 Oxygen Sensor Compatible with 2005 2004 2003 Chevy Avalanche Silverado Suburban 1500 Escalade Tahoe GMC Sierra 1500 Yukon XL 1500 5.3L 02 Sensor](https://m.media-amazon.com/images/I/41934BMNqwL.jpg)**EXPEDE 234-4668 4pcs Upstream Downstream Sensors O2 Oxygen Sensor Compatible with 2005 2004 2003 Chevy Avalanche Silverado Suburban 1500 Escalade Tahoe GMC Sierra 1500 Yukon XL 1500 5.3L 02 Sensor**EXPEDE**$39.62**4.0★**▲ 103%**](https://www.amazon.com/dp/B09G6NHB8D) [![Denso Oxygen (O2) Sensor - 234-4622 (Fits Select Years of Lexus: ES300(h)/NX200t/NX300(h) Pontiac Vibe and Toyota: 4Runner/Avalon/Camry/Corolla/Matrix/Paseo/RAV4/Sienna/Solara/Tercel Vehicles)](https://m.media-amazon.com/images/I/21DUhF49uPL.jpg)**Denso Oxygen (O2) Sensor - 234-4622 (Fits Select Years of Lexus: ES300(h)/NX200t/NX300(h) Pontiac Vibe and Toyota: 4Runner/Avalon/Camry/Corolla/Matrix/Paseo/RAV4/Sienna/Solara/Tercel Vehicles)**Denso**$52.07**4.4★**▲ 86%**](https://www.amazon.com/dp/B000C5SGA4) [![Oxygen Sensor Upstream + Downstream 234-9036 234-4382 Compatible for Nissan Altima Rogue 2.5L 2010 2011 2012 2013 1821382Z50 226A0JA10C 2pcs](https://m.media-amazon.com/images/I/41M3D4B54NL.jpg)**Oxygen Sensor Upstream + Downstream 234-9036 234-4382 Compatible for Nissan Altima Rogue 2.5L 2010 2011 2012 2013 1821382Z50 226A0JA10C 2pcs**ISINMOTOR**$37.61**3.9★**▲ 77%**](https://www.amazon.com/dp/B0F6YK7SH8)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 104 weeks — -15.5% search growth over the last 90 days.

90K70K seasonSepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.3×

## **Reviews**

What buyers praise and complain about, mined from review topics.

### **What buyers love **

**Ease Of Use**17%

*“EASY TO USE”*

**Efficiency**14%

*“Working good”*

**Quality-Overall**13%

*“The build quality is excellent”*

**Advertised Vs Actual Product**12%

*“Exactly as advertised”*

**Accuracy-Overall**11%

*“Accurate and easy”*

**Value For Money**11%

*“Very affordable”*

**Size-Overall**3%

*“Fit as advertised”*

**Health Monitoring**2%

*“Easy to check your oxygen levels”*

**Heart Health**1%

*“Perfect for heart rate”*

**Durability**1%

*“Very durable”*

### **What buyers complain about **

**Accuracy-Overall**15%

*“NOT ACCURATE”*

**Measurement/Reading Accuracy**15%

*“Inaccurate Readings”*

**Functionality-Overall**14%

*“Dose not work”*

**Durability**7%

*“broke in 2 months”*

**Quality-Overall**7%

*“Bad quality, stopped working the next day”*

**Sensor**5%

*“I think the sensors I received are not compatible”*

**Battery Life**4%

*“Batteries dont last very long”*

**Value For Money**4%

*“Not Worth It”*

**Size-Overall**3%

*“Very small”*

**Compatibility-Overall**2%

*“Not compatible, no help anywhere”*

### **Top return reasons **

**Measurement/Reading Accuracy**26%

**Functionality-Overall**18%

**Sensor**9%

**Accuracy-Overall**8%

**Size-Overall**7%

**Compatibility-Overall**6%

**Advertised Vs Actual Product**5%

**Display-Overall**3%

**Defective Material/Parts**2%

**Value For Money**2%