---
title: "L5p Injector Pigtail — $77K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/l5p-injector-pigtail"
last_updated: "2026-08-10T17:05:21.690Z"
locale: en
meta:
description: "Niche score 44/100 · $77K/yr market · 12K searches/yr · $51.77 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 44/100 · $77K/yr market · 12K searches/yr · $51.77 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "L5p Injector Pigtail — $77K/yr Amazon US Niche (2026) - Flapen"
---
# **l5p injector pigtail**
**Skip it**
A concentrated shelf (top 5 take 85% of clicks) — this niche doesn't clear our bar today.
Market size 19Growth 28Conversion 95Competition 13Returns 93Price range 30Avg price 93Brand share 27Review moat 98Quality gap 24
**Review moat**
**Incredible****43.18**
avg incumbent reviews — the moat a new listing must climb
**Conversion**
**Incredible****12.1%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Great****1.1%**
return rate — above 5% kills the launch gate
**Avg price**
**Great****$51.77**
avg listing price — sweet spot $15–$100
**Price range**
**Okay****$12.66–$299.85**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Okay****+2.4%**
90-day search growth — must beat 0% to launch
**Brand share**
**Okay****89%**
top-5 brand share — brands hold most of the demand
**Quality gap**
**Bad****4.6★**
avg incumbent rating — lower means beatable quality
**Market size**
**Bad****$77K**
$77K/yr · 12K searches
**Competition**
**Bad****85%**
top-5 click share — a locked-up shelf
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500") [** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")
According to Flapen's Amazon United States niche tracking, l5p injector pigtail is a $77K/yr Amazon United States market (12K searches/yr). The top 5 brands hold 89% of demand. Verdict: Skip it — 44/100.
Data updated Jul 10, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **l5p injector pigtail market data**
- **Units sold / yr**
- **2K–3K**
- avg 100–250/product
- **Revenue / yr**
- **$104K–$129K**
- units × avg price
- **Conversion rate**
- **12.1%**
- **Avg BSR**
- **#314**
- **Page quality**
- **0%**
- **Prime**
- **82%**
- **Sponsored**
- **82%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **30 months**
- **Avg seller age**
- **182 days**
## **Competition & brand share**
The top 5 products capture 85% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**9 **▼falling
**Sellers**
**55**
**Top-5 brand share**
**89%**
Top 20: 100%
**Top-5 click share**
**85%**
Top 20: 100%
**Open market**
**6%**
- smart repairboy38% - GM GENUINE PARTS23% - MEMOEO11% - MOMYCAT10% - Fleece Performance Engineering7% - KPALAG5% - Open — no brand owns it (3 brands, 6%)
## **Demand**
Weekly Amazon search volume, last 39 weeks — +2.4% search growth over the last 90 days.
300200Spike '26Oct '25Nov '25Jan '26Feb '26Mar '26May '26Jun '26
[**Open Trend **](https://flapen.com/research/us/automotive/l5p-injector-pigtail/trend)
## **Top l5p injector pigtail 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.
0%10%$8K20%$15K30%$23K40%$31K1101001K 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**2PCS PT3739 Injector Pigtail Connector Replace for Duramax L5P Engine V8 6.6L Original Equipment Multi-Purpose Pigtail Kit**smart repairboy**$13.42**4.7★132 rev](https://www.amazon.com/dp/B0C7JY652J) [2**GM Genuine Parts PT3739 (19368140) Multi-Purpose Pigtail Kit**GM GENUINE PARTS**$55.31**4.8★144 rev](https://www.amazon.com/dp/B07CJHYDH7) [3**MEMOEO Injector Pigtail Connector 19368140 PT3739 Cmpatible with 6.6L L5P Duramax Engine SILVERADO SIERRA CANYON EXPRESS 2Pcs**MEMOEO**$13.37**4.7★22 rev](https://www.amazon.com/dp/B0FC6C1F6L) [4**MOMYCAT 8PCS PT3739 Fuel Injector Pigtail Connector Kit - Compatible with Chevy GM 2017-2024 OEM 19368140 Replacement for Duramax L5P 6.6L V8 - Original Equipment Multi-Purpose Pigtail**MOMYCAT**$28.55**5.0★8 rev](https://www.amazon.com/dp/B0FF36V63Q) [5**KPALAG 16 AWG Multi-Purpose Pigtail Fuel Injector Connector Harness Wire Compatible with GMC Chevy L5P Duramax Diesel V8 6.6L Replace#: 19368140 PT3739**KPALAG**$12.66**4.4★9 rev](https://www.amazon.com/dp/B0DLMY1K14)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**NPSNGSJY PT3739 Injector Pigtail Connector Compatible with Duramax L5P Engine V8 6.6L Replacement for 19368140 Fuel Injector Pigtail Connector Kit (4pcs)**NPSNGSJY**$16.97**11 rev11mo ago](https://www.amazon.com/dp/B0FDKJQP55) [**MOMYCAT 8PCS PT3739 Fuel Injector Pigtail Connector Kit - Compatible with Chevy GM 2017-2024 OEM 19368140 Replacement for Duramax L5P 6.6L V8 - Original Equipment Multi-Purpose Pigtail**MOMYCAT**$28.55**8 rev1y ago](https://www.amazon.com/dp/B0FF36V63Q) [**MEMOEO Injector Pigtail Connector 19368140 PT3739 Cmpatible with 6.6L L5P Duramax Engine SILVERADO SIERRA CANYON EXPRESS 2Pcs**MEMOEO**$13.37**22 rev1y ago](https://www.amazon.com/dp/B0FC6C1F6L) [**8PCS Injector Pigtail Connector PT3739 Fit for Chevy GM Vehicles 2017-2024 Multi-Purpose Pigtail Kit Fit for Duramax L5P Engine V8 6.6L Replace 19368140 1936-8140**Qnbes**$27.29**4 rev1y ago](https://www.amazon.com/dp/B0F47P49KL) [**Replacement Fuel Injector Connector With Pigtail for L5P Duramax - 8 Pack**Fleece Performance Engineering**$299.85**1 rev1y ago](https://www.amazon.com/dp/B0DWLVPKLC)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**4PCS PT3739 Injector Pigtail Connector Original Equipment Multi-Purpose Pigtail Kit Replace for Duramax L5P Engine V8 6.6L**smart repairboy**$23.39**4.7★**▲ 195%**](https://www.amazon.com/dp/B0BY8XDY2C) [**MOMYCAT 8PCS PT3739 Fuel Injector Pigtail Connector Kit - Compatible with Chevy GM 2017-2024 OEM 19368140 Replacement for Duramax L5P 6.6L V8 - Original Equipment Multi-Purpose Pigtail**MOMYCAT**$28.55**5.0★**▲ 79%**](https://www.amazon.com/dp/B0FF36V63Q) [**Fleece Performance Replacement Fuel Injector Connector With Pigtail for L5P Duramax**Fleece Performance Engineering**$64.66**5.0★**▲ 46%**](https://www.amazon.com/dp/B0BT892B31) [**KPALAG 16 AWG Multi-Purpose Pigtail Fuel Injector Connector Harness Wire Compatible with GMC Chevy L5P Duramax Diesel V8 6.6L Replace#: 19368140 PT3739**KPALAG**$12.66**4.4★**▲ 12%**](https://www.amazon.com/dp/B0DLMY1K14) [**8PCS Injector Pigtail Connector PT3739 Fit for Chevy GM Vehicles 2017-2024 Multi-Purpose Pigtail Kit Fit for Duramax L5P Engine V8 6.6L Replace 19368140 1936-8140**Qnbes**$27.29**3.5★**— 7%**](https://www.amazon.com/dp/B0F47P49KL)
**~~View all trending →~~**
## **What buyers say about l5p injector pigtail**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Value For Money**18%
*“The price is good too”*
**Efficiency**18%
*“Works perfectly”*
**Size-Overall**17%
*“Fit perfect”*
**Quality-Overall**13%
*“Quality with fair pricing”*
**Advertised Vs Actual Product**11%
*“Exceeded expectations”*
**Ease Of Use**7%
*“They are easy to use and splice in and they do exactly what theyre supposed to”*
**Assembly/Installation**5%
*“Installation was straightforward with no issues”*
**Maintenance And Repair**4%
*“They worked ok for my repair”*
**Durability**2%
*“Im confident theyll hold up over time”*
### **What buyers complain about **
**Socket/Port/Plug**25%
*“Had problems with one connector”*
**Assembly/Installation**17%
*“Took me about 2 hours to install both sides”*
### **Top return reasons **
**Maintenance And Repair**15%
**Compatibility-Overall**13%
**Value For Money**12%
**Advertised Vs Actual Product**12%
**Quality-Overall**8%
**Socket/Port/Plug**8%
**Size-Overall**8%
**Connectivity-Overall**8%
**Defective Material/Parts**6%
**Material Quality**4%
## **Common questions**
- **Is l5p injector pigtail profitable to sell on Amazon United States?**
- The niche generates $77K/yr across 11 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +2.4%. Flapen's verdict: Skip it (44/100).
- **How competitive is the l5p injector pigtail niche?**
- 9 brands and 55 sellers compete. The top 5 products take 85% of clicks and top 5 brands hold 89% of demand.
- **What do buyers complain about in l5p injector pigtail?**
- Top complaints mined from reviews: Socket/Port/Plug, Assembly/Installation. The return rate is 1.1%.
- **What does it cost to enter the l5p injector pigtail niche?**
- Listings span $12.66–$299.85; the average listing price is $51.77 (sweet spot $15–$100). The average incumbent carries 43 reviews — the moat a new listing must climb.
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