Is o2 sensor profitable to sell on Amazon United States?

The niche generates $3.5M/yr across 68 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is -15.5%. Flapen's verdict: Worth a look (67/100).

How competitive is the o2 sensor niche?

35 brands and 107 sellers compete. The top 5 products take 30% of clicks and top 5 brands hold 50% of demand.

What do buyers complain about in o2 sensor?

Top complaints mined from reviews: Accuracy-Overall, Measurement/Reading Accuracy, Functionality-Overall. The return rate is 2.1%.

When does demand for o2 sensor peak?

Demand is steady year-round — the busiest month runs 1.3× the quietest.

What does it cost to enter the o2 sensor niche?

Listings span $9.70–$70.11; the average listing price is $36.54 (sweet spot $15–$100). The average incumbent carries 6,805 reviews — the moat a new listing must climb.

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

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

Great30%

top-5 click share — an open shelf

Brand share

Great50%

top-5 brand share — no brand owns this niche

Quality gap

Great4.2★

avg incumbent rating — lower means beatable quality

Returns

Good2.1%

return rate — above 6% kills the launch gate

Conversion

Okay2.5%

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

Review moat

Bad6,804.69

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-15.5%

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

According to Flapen's Amazon United States niche tracking, o2 sensor is a $3.5M/yr Amazon United States market (3.9M searches/yr). The top 5 brands hold 50% of demand. Verdict: Worth a look — 67/100.

Data updated Jul 11, 2026 · scored weekly · How we score niches

Market data

Units sold / yr: 100K–125K; avg 1,500–2,000/product
Revenue / yr: $3.7M–$4.6M; units × avg price
Launch success: —; 1 of 2 new (360d)
Conversion rate: 2.5%
Avg BSR: #217
Page quality: 0%
Prime: 99%
Sponsored: 81%
Out of stock: 0.0%
Avg brand age: 44 months
Avg seller age: 156 days

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%

Top 20: 88%

Top-5 click share

30%

Top 20: 56%

Open market

44%

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

Demand & seasonality

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

No pronounced peak months · busiest ÷ quietest = 1.3×

Open Trend

Product shelf

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

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

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$29.224.3★2,644 rev

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$47.534.0★360 rev

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$39.384.3★234 rev

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$52.074.4★1,241 rev

Walker Products 350-34039 Oxygen Sensor 4-Wire Direct Fit (Original Equipment Replacement O2 Sensor)

Walker Products$28.054.4★669 rev

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

QIYBONE$49.1110 rev

3mo ago

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$28.5316 rev

4mo ago

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$46.8036 rev

1y ago

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$28.1731 rev

1y ago

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$60.9251 rev

1y ago

Reviews

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

What buyers love

Ease Of Use17%

“EASY TO USE”

Efficiency14%

“Working good”

Quality-Overall13%

“The build quality is excellent”

Advertised Vs Actual Product12%

“Exactly as advertised”

Accuracy-Overall11%

“Accurate and easy”

Value For Money11%

“Very affordable”

Size-Overall3%

“Fit as advertised”

Health Monitoring2%

“Easy to check your oxygen levels”

Heart Health1%

“Perfect for heart rate”

Durability1%

“Very durable”

What buyers complain about

Accuracy-Overall15%

“NOT ACCURATE”

Measurement/Reading Accuracy15%

“Inaccurate Readings”

Functionality-Overall14%

“Dose not work”

Durability7%

“broke in 2 months”

Quality-Overall7%

“Bad quality, stopped working the next day”

Sensor5%

“I think the sensors I received are not compatible”

Battery Life4%

“Batteries dont last very long”

Value For Money4%

“Not Worth It”

Size-Overall3%

“Very small”

Compatibility-Overall2%

“Not compatible, no help anywhere”

Top return reasons

Measurement/Reading Accuracy26%

Functionality-Overall18%

Sensor9%

Accuracy-Overall8%

Size-Overall7%

Compatibility-Overall6%

Advertised Vs Actual Product5%

Display-Overall3%

Defective Material/Parts2%

Value For Money2%

Common questions

Is o2 sensor profitable to sell on Amazon United States?: The niche generates $3.5M/yr across 68 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is -15.5%. Flapen's verdict: Worth a look (67/100).
How competitive is the o2 sensor niche?: 35 brands and 107 sellers compete. The top 5 products take 30% of clicks and top 5 brands hold 50% of demand.
What do buyers complain about in o2 sensor?: Top complaints mined from reviews: Accuracy-Overall, Measurement/Reading Accuracy, Functionality-Overall. The return rate is 2.1%.
When does demand for o2 sensor peak?: Demand is steady year-round — the busiest month runs 1.3× the quietest.
What does it cost to enter the o2 sensor niche?: Listings span $9.70–$70.11; the average listing price is $36.54 (sweet spot $15–$100). The average incumbent carries 6,805 reviews — the moat a new listing must climb.

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o2 sensor

Market data

Competition

Demand & seasonality

Product shelf

Top sellers

Newest

Trending

Reviews

What buyers love

What buyers complain about

Top return reasons

Common questions

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