---
title: "Trend — coolant reservoir cap - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/coolant-reservoir-cap/trend"
last_updated: "2026-08-10T18:28:36.978Z"
locale: en
meta:
  description: "Niche score 55/100 · $73K/yr market · 162K searches/yr · $8.59 avg price. A small market ($73K/yr) keeps it on the watch list. Data updated Jul 2026."
  "og:description": "Niche score 55/100 · $73K/yr market · 162K searches/yr · $8.59 avg price. A small market ($73K/yr) keeps it on the watch list. Data updated Jul 2026."
  "og:title": "Trend — coolant reservoir cap - Flapen"
---

# **coolant reservoir cap**

**Worth a look**

Shows no brand lock-in (top 5 brands take 35% of clicks), but a small market ($73K/yr) keeps it on the watch list.

Market size 18Growth 20Conversion 61Competition 93Returns 55Price range 31Avg price 24Brand share 96Review moat 87Quality gap 76

**Brand share**

**Incredible****35%**

top-5 brand share — no brand owns this niche

**Competition**

**Great****22%**

top-5 click share — an open shelf

**Review moat**

**Great****264.25**

avg incumbent reviews — the moat a new listing must climb

**Quality gap**

**Great****4.3★**

avg incumbent rating — lower means beatable quality

**Conversion**

**Good****5.3%**

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

**Returns**

**Good****2.8%**

return rate — above 5% kills the launch gate

**Price range**

**Okay****$3.08–$20.38**

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

**Avg price**

**Bad****$8.59**

avg listing price — sweet spot $15–$100

**Growth**

**Bad****-10.1%**

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

**Market size**

**Bad****$73K**

$73K/yr · 162K searches

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

## Trend