---
title: "flex fuel sensor — Niche Verdict: Skip it (43/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/automotive/flex-fuel-sensor"
last_updated: "2026-07-13T19:58:22.773Z"
locale: en
meta:
  description: "a concentrated shelf (top 5 take 79% of clicks) — flex fuel sensor doesn't clear our bar today."
  "og:description": "a concentrated shelf (top 5 take 79% of clicks) — flex fuel sensor doesn't clear our bar today."
  "og:title": "flex fuel sensor — Niche Verdict: Skip it (43/100) | Amazon United States - Flapen"
---

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# **flex fuel sensor**

**Skip it**

A concentrated shelf (top 5 take 79% of clicks) — this niche doesn't clear our bar today.

Market size 20Growth 33Conversion 62Competition 17Returns 52Price range 82Avg price 89Brand share 30Review moat 91Quality gap 45

**Review moat**

**Great****185.64**

avg incumbent reviews — the moat a new listing must climb

**Avg price**

**Great****$62.55**

avg listing price — sweet spot $15–$100

**Price range**

**Great****$7.79–$108.67**

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

**Conversion**

**Good****5.4%**

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

**Returns**

**Good****2.9%**

return rate — above 6% kills the launch gate

**Quality gap**

**Okay****4.5★**

avg incumbent rating — lower means beatable quality

**Growth**

**Okay****+6.7%**

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

**Brand share**

**Okay****87%**

top-5 brand share — brands hold most of the demand

**Market size**

**Bad****$82K**

$82K/yr · 24K searches

**Competition**

**Bad****79%**

top-5 click share — a locked-up shelf

## **Competition**

The top 5 products capture 79% of clicks — a locked-up shelf that new listings rarely crack.

**Brands**

**9 **▲rising

**Sellers**

**29**

**Top-5 brand share**

**87%**

**Open market**

**8%**

- GM GENUINE PARTS52% - FUSCH14% - Hoypeyfiy9% - motoparty7% - 40T PERFORMANCE6% - AA Ignition5% - Open — no brand owns it (3 brands, 8%)

## **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%15%$12K30%$24K45%$37K60%$49K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

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

All 11 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![GM Genuine Parts 13507128 Flex Fuel Sensor](https://m.media-amazon.com/images/I/41zsnfA2kwL.jpg)**GM Genuine Parts 13507128 Flex Fuel Sensor**GM GENUINE PARTS**$61.15**4.7★489 rev](https://www.amazon.com/dp/B073ZQ1G2P) [2![FUSCH E85 Flex Fuel Sensor with Connector Pigtail Compatible with GM Series Replace# 13507128](https://m.media-amazon.com/images/I/41ZRt0kZaEL.jpg)**FUSCH E85 Flex Fuel Sensor with Connector Pigtail Compatible with GM Series Replace# 13507128**FUSCH**$57.90**5.0★11 rev](https://www.amazon.com/dp/B0FCFH2YRJ) [3![Hoypeyfiy Flex Fuel Sensor Connector Replacement for GM E85 Flex Pigtail Plastic Fuel Composition Ethanol E85-2](https://m.media-amazon.com/images/I/31RpaYPgpJL.jpg)**Hoypeyfiy Flex Fuel Sensor Connector Replacement for GM E85 Flex Pigtail Plastic Fuel Composition Ethanol E85-2**Hoypeyfiy**$7.79**4.6★401 rev](https://www.amazon.com/dp/B07115TSNK) [4![E85 Universal Flex Fuel Sensor Adapter Kit Bypass Module Solid Billet 6061 Aluminum Material 6AN 8AN Splitter](https://m.media-amazon.com/images/I/31TWRh8ofNL.jpg)**E85 Universal Flex Fuel Sensor Adapter Kit Bypass Module Solid Billet 6061 Aluminum Material 6AN 8AN Splitter**motoparty**$68.92**3.7★17 rev](https://www.amazon.com/dp/B0DBLRK68Z) [5![40T-Performance E85 Flex Fuel Sensor Mount/Bracket Bypass Module - Robust Mount for Full Flow from Your E85 Flex Fuel Sensor to Fuel Rails - Solid 6061 Billet - 6AN and 8AN Fittings Included](https://m.media-amazon.com/images/I/31IkZOQ1tQL.jpg)**40T-Performance E85 Flex Fuel Sensor Mount/Bracket Bypass Module - Robust Mount for Full Flow from Your E85 Flex Fuel Sensor to Fuel Rails - Solid 6061 Billet - 6AN and 8AN Fittings Included**40T PERFORMANCE**$108.67**4.6★73 rev](https://www.amazon.com/dp/B08PFCDHHN)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![E85 Flex Fuel Sensor with Connector Wiring Harness Compatible with Chevrolet Captiva Sport Equinox Silverado Suburban GMC Sierra Yukon Buick Lacrosse Replacement for 13507128 13577394](https://m.media-amazon.com/images/I/41ODAaa5ZIL.jpg)**E85 Flex Fuel Sensor with Connector Wiring Harness Compatible with Chevrolet Captiva Sport Equinox Silverado Suburban GMC Sierra Yukon Buick Lacrosse Replacement for 13507128 13577394**yeeluzan**$46.14**2 rev10mo ago](https://www.amazon.com/dp/B0FQM96HVG) [![13507128 E85 Flex Fuel Sensor Fit for GM Series Replace 13577394 with Connector Pigtail](https://m.media-amazon.com/images/I/41b-j92E9JL.jpg)**13507128 E85 Flex Fuel Sensor Fit for GM Series Replace 13577394 with Connector Pigtail**PWSLKO**$49.95**1 rev1y ago](https://www.amazon.com/dp/B0FFGR2T4H) [![FUSCH E85 Flex Fuel Sensor with Connector Pigtail Compatible with GM Series Replace# 13507128](https://m.media-amazon.com/images/I/41ZRt0kZaEL.jpg)**FUSCH E85 Flex Fuel Sensor with Connector Pigtail Compatible with GM Series Replace# 13507128**FUSCH**$57.90**11 rev1y ago](https://www.amazon.com/dp/B0FCFH2YRJ) [![E85 Universal Flex Fuel Sensor Adapter Kit Bypass Module Solid Billet 6061 Aluminum Material 6AN 8AN Splitter](https://m.media-amazon.com/images/I/31TWRh8ofNL.jpg)**E85 Universal Flex Fuel Sensor Adapter Kit Bypass Module Solid Billet 6061 Aluminum Material 6AN 8AN Splitter**motoparty**$68.92**17 rev1y ago](https://www.amazon.com/dp/B0DBLRK68Z) [![GM Genuine Parts 13507129 Flex Fuel Sensor](https://m.media-amazon.com/images/I/21-T8Zm7EdL.jpg)**GM Genuine Parts 13507129 Flex Fuel Sensor**GM GENUINE PARTS**$81.73**12 rev2y ago](https://www.amazon.com/dp/B0CL5CD5LV)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![E85 Flex Fuel Sensor with Connector Wiring Harness Compatible with Chevrolet Captiva Sport Equinox Silverado Suburban GMC Sierra Yukon Buick Lacrosse Replacement for 13507128 13577394](https://m.media-amazon.com/images/I/41ODAaa5ZIL.jpg)**E85 Flex Fuel Sensor with Connector Wiring Harness Compatible with Chevrolet Captiva Sport Equinox Silverado Suburban GMC Sierra Yukon Buick Lacrosse Replacement for 13507128 13577394**yeeluzan**$46.14**4.0★**▲ 62%**](https://www.amazon.com/dp/B0FQM96HVG) [![13507128 E85 Flex Fuel Sensor Fit for GM Series Replace 13577394 with Connector Pigtail](https://m.media-amazon.com/images/I/41b-j92E9JL.jpg)**13507128 E85 Flex Fuel Sensor Fit for GM Series Replace 13577394 with Connector Pigtail**PWSLKO**$49.95**5.0★**▲ 35%**](https://www.amazon.com/dp/B0FFGR2T4H) [![Hoypeyfiy Flex Fuel Sensor Connector Replacement for GM E85 Flex Pigtail Plastic Fuel Composition Ethanol E85-2](https://m.media-amazon.com/images/I/31RpaYPgpJL.jpg)**Hoypeyfiy Flex Fuel Sensor Connector Replacement for GM E85 Flex Pigtail Plastic Fuel Composition Ethanol E85-2**Hoypeyfiy**$7.79**4.6★**▲ 15%**](https://www.amazon.com/dp/B07115TSNK) [![40T-Performance E85 Flex Fuel Sensor Mount/Bracket Bypass Module - Robust Mount for Full Flow from Your E85 Flex Fuel Sensor to Fuel Rails - Solid 6061 Billet - 6AN and 8AN Fittings Included](https://m.media-amazon.com/images/I/31IkZOQ1tQL.jpg)**40T-Performance E85 Flex Fuel Sensor Mount/Bracket Bypass Module - Robust Mount for Full Flow from Your E85 Flex Fuel Sensor to Fuel Rails - Solid 6061 Billet - 6AN and 8AN Fittings Included**40T PERFORMANCE**$108.67**4.6★**▲ 11%**](https://www.amazon.com/dp/B08PFCDHHN) [![E85 Universal Flex Fuel Sensor Adapter Kit Bypass Module Solid Billet 6061 Aluminum Material 6AN 8AN Splitter](https://m.media-amazon.com/images/I/31TWRh8ofNL.jpg)**E85 Universal Flex Fuel Sensor Adapter Kit Bypass Module Solid Billet 6061 Aluminum Material 6AN 8AN Splitter**motoparty**$68.92**3.7★**— 4%**](https://www.amazon.com/dp/B0DBLRK68Z)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 104 weeks — +6.7% search growth over the last 90 days.

700500Spike '24Spike '25Holiday '25Spike '26 seasonSepDecMarJunAugNovMarMay

Peak months: Apr, May · busiest ÷ quietest = 1.5×

## **Reviews**

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

### **What buyers love **

**Quality-Overall**29%

*“Great product”*

**Size-Overall**11%

*“Fits great”*

**Advertised Vs Actual Product**10%

*“Works like it should”*

**Fuel Efficiency**6%

*“My gas looked great and fresh”*

**Leak-Proof**6%

*“The connector was able to insert cleanly without leakage”*

**Value For Money**5%

*“The price was great for this”*

**Assembly/Installation**4%

*“Easy install, just make sure you have the correct fuel line disconnect tool”*

**Functionality-Overall**4%

*“Legit actually works thank you”*

**Design-Overall**3%

*“the whole thing looks”*

**Weight Heavy**2%

*“Works perfectly, a little bulky”*

### **What buyers complain about **

**Sensor**38%

*“Sensor failure”*

**Durability**11%

*“Didnt last a year”*

**Functionality-Overall**7%

*“this won't work”*

**Product Condition**4%

*“Apparently because it was used”*

**Quality-Overall**4%

*“Junk”*

**Design-Overall**4%

*“Faulty design”*

**Value For Money**4%

*“A little bit cheaper than the motion raceworks one”*

**Weight Heavy**2%

*“The unit is very heavy -- unnecessarily heavy, I'd think”*

**Assembly/Installation**2%

*“some additional deburring was needed to get the bolts in to clamp the two halves together”*

### **Top return reasons **

**Sensor**23%

**Functionality-Overall**11%

**Compatibility-Overall**11%

**Size-Overall**9%

**Defective Material/Parts**8%

**Value For Money**6%

**Socket/Port/Plug**5%

**Connectivity-Overall**5%

**Advertised Vs Actual Product**5%

**Fuel Efficiency**3%