---
title: "Reviews — 1/4 fuel filter - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/1-4-fuel-filter/reviews"
last_updated: "2026-08-09T06:17:17.515Z"
locale: en
meta:
  description: "Niche score 65/100 · $212K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
  "og:description": "Niche score 65/100 · $212K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
  "og:title": "Reviews — 1/4 fuel filter - Flapen"
---

# **1/4 fuel filter**

**Worth a look**

Shows low returns (0.9%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size 41Growth 76Conversion 84Competition 70Returns 95Price range 31Avg price 25Brand share 82Review moat 71Quality gap 47

**Returns**

**Incredible****0.9%**

return rate — above 5% kills the launch gate

**Conversion**

**Great****9.2%**

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

**Brand share**

**Great****53%**

top-5 brand share — no brand owns this niche

**Growth**

**Great****+62.6%**

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

**Review moat**

**Good****645.95**

avg incumbent reviews — the moat a new listing must climb

**Competition**

**Good****43%**

top-5 click share — leaders hold, buyers still browse

**Quality gap**

**Okay****4.5★**

avg incumbent rating — lower means beatable quality

**Market size**

**Okay****$212K**

$212K/yr · 257K searches

**Price range**

**Okay****$4.75–$19.70**

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

**Avg price**

**Okay****$8.98**

avg listing price — sweet spot $15–$100

**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%")

## Reviews