---
title: "Valve Cover Breather — $87K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/valve-cover-breather"
last_updated: "2026-08-09T08:09:59.124Z"
locale: en
meta:
description: "Niche score 55/100 · $87K/yr market · 119K searches/yr · $19.24 avg price. A small market ($87K/yr) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 55/100 · $87K/yr market · 119K searches/yr · $19.24 avg price. A small market ($87K/yr) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Valve Cover Breather — $87K/yr Amazon US Niche (2026) - Flapen"
---
# **valve cover breather**
**Worth a look**
Shows a thin review moat (239 avg reviews), but a small market ($87K/yr) keeps it on the watch list.
Market size 22Growth 32Conversion 48Competition 78Returns 62Price range 80Avg price 86Brand share 83Review moat 88Quality gap 37
**Review moat**
**Great****239.47**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Great****$19.24**
avg listing price — sweet spot $15–$100
**Brand share**
**Great****52%**
top-5 brand share — no brand owns this niche
**Price range**
**Great****$4.76–$58.06**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Great****37%**
top-5 click share — an open shelf
**Returns**
**Good****2.5%**
return rate — above 5% kills the launch gate
**Conversion**
**Okay****3.8%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Growth**
**Okay****+5.4%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$87K**
$87K/yr · 119K searches
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%")
According to Flapen's Amazon United States niche tracking, valve cover breather is a $87K/yr Amazon United States market (119K searches/yr). The top 5 brands hold 52% of demand. Verdict: Worth a look — 55/100.
Data updated Jul 9, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **valve cover breather market data**
- **Units sold / yr**
- **4K–5K**
- avg 0–100/product
- **Revenue / yr**
- **$77K–$96K**
- units × avg price
- **Conversion rate**
- **3.8%**
- **Avg BSR**
- **#702**
- **Page quality**
- **0%**
- **Prime**
- **96%**
- **Sponsored**
- **62%**
- **Out of stock**
- **4.6%**
- **Avg brand age**
- **52 months**
- **Avg seller age**
- **172 days**
## **Competition & brand share**
Clicks spread well past the top 5 (37% combined) — an open shelf where new products get seen.
**Brands**
**31 **▲rising
**Sellers**
**102**
**Top-5 brand share**
**52%**
Top 20: 92%
**Top-5 click share**
**37%**
Top 20: 74%
**Open market**
**43%**
- Spectre17% - Calvana15% - muge racing8% - RYANSTAR RACING7% - Edelbrock5% - K&N5%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +5.4% search growth over the last 90 days.
3K2KSpike '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.6×
[**Open Trend **](https://flapen.com/research/us/automotive/valve-cover-breather/trend)
## **Top valve cover breather search terms**
- **valve cover breather**69K/yr+6.6%3.2% conv. - **sbc valve cover breather**11K/yr+1.6%4.4% conv. - **valve cover breathers**8K/yr-4.2%2.0% conv. - **valve cover breather filter**8K/yr+14.3%3.4% conv. - **pcv breather**6K/yr+4.5%2.7% conv. - **oil breather cap**6K/yr+16.2%2.1% conv. - **oil breather**4K/yr+4.8%2.4% conv. - **valve cover filter**4K/yr+1.8%4.2% conv. - **chevy valve cover breather**4K/yr-6.4%3.0% conv. [**All search terms **](https://flapen.com/research/us/automotive/valve-cover-breather/search-terms)
## **Top valve cover breather 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%3%$3K6%$5K9%$8K12%$10K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**(2-Pack) Calvana Round Push-In Breather with 1 Tube for 1-1/4 Hole in Valve Cover Includes Grommet Compatible with Spectre 4276 Fits SBC BBC SBF 327 350 302 454 and 502**Calvana**$15.51**4.6★49 rev](https://www.amazon.com/dp/B0F43L9FXW) [2**Spectre Performance 4299 .75 Push-In Breather with Grommet**Spectre**$9.23**4.6★600 rev](https://www.amazon.com/dp/B004AJ1754) [3**Spectre Performance 4276 1-1/4 Push-In Breather with Grommet**Spectre**$9.15**4.6★1,519 rev](https://www.amazon.com/dp/B004AIZAH6) [4**(2-Pack) Calvana 4299 3/4 Push-In Chrome Valve Cover Breather Pro - for Spectre Steel Construction Grommet Included 2.5 Height 3 Diameter**Calvana**$16.17**4.6★49 rev](https://www.amazon.com/dp/B0G1YFXM73) [5**RYANSTAR RACING 23MM High Flow Vent Valve Cover Breather Filter Universal Car Air Filter Cold Air Intake Filter Small Air Filter Breather Universal Air Vent Cover Black**RYANSTAR RACING**$12.76**4.5★115 rev](https://www.amazon.com/dp/B0CKSJWRKQ)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**5339 Valve Cover Breather Grommet for All Valve Covers with 1-1/4 inch Filler-breather Holes 2 Pack (0.75 & 1 I D) Oil & Heat Resistant PVC Cover Grommet for SBC BBC SBF Engines Vent Systems**BANLIN**$8.26**43 rev7mo ago](https://www.amazon.com/dp/B0FX9TN9SY) [**(2-Pack) Calvana 4299 3/4 Push-In Chrome Valve Cover Breather Pro - for Spectre Steel Construction Grommet Included 2.5 Height 3 Diameter**Calvana**$16.17**49 rev7mo ago](https://www.amazon.com/dp/B0G1YFXM73) [**SSN Polished Oval Finned Aluminum Valve Cover Air Breather PCV Valve Combo Compatible with Chevy Ford 2PCS.**SSN**$47.10**3 rev10mo ago](https://www.amazon.com/dp/B0FNM1RTVF) [**BIGREAT Silver Aluminum Smooth Valve Cover & Breather Combo with 2 Grommets Compatible with SBC BBC SBF For 1-1/4 Hole-2PC**BIGREAT**$58.06**20 rev1y ago](https://www.amazon.com/dp/B0F8Q26HRL) [**BIGREAT Black Aluminum Smooth Valve Cover & Breather Combo with 2 Grommets Compatible with SBC BBC SBF For 1-1/4 Hole-2PC**BIGREAT**$57.61**20 rev1y ago](https://www.amazon.com/dp/B0F8PYJKC3)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**(2-Pack) Calvana 4299 3/4 Push-In Chrome Valve Cover Breather Pro - for Spectre Steel Construction Grommet Included 2.5 Height 3 Diameter**Calvana**$16.17**4.6★**▲ 146%**](https://www.amazon.com/dp/B0G1YFXM73) [**MUGE RACING 2Pcs Air Filter Cold Air Intake Filter Breather 12mm Valve Cover Breather Filter For Car and Motorcycle(Carbon Fiber)**muge racing**$10.12**4.4★**▲ 75%**](https://www.amazon.com/dp/B0CDPJMKL4) [**(2-Pack) Calvana Round Push-In Breather with 1 Tube for 1-1/4 Hole in Valve Cover Includes Grommet Compatible with Spectre 4276 Fits SBC BBC SBF 327 350 302 454 and 502**Calvana**$15.51**4.6★**▲ 74%**](https://www.amazon.com/dp/B0F43L9FXW) [**5339 Valve Cover Breather Grommet for All Valve Covers with 1-1/4 inch Filler-breather Holes 2 Pack (0.75 & 1 I D) Oil & Heat Resistant PVC Cover Grommet for SBC BBC SBF Engines Vent Systems**BANLIN**$8.26**4.7★**▲ 69%**](https://www.amazon.com/dp/B0FX9TN9SY) [**Universal Chrome Washable Valve Cover Breather 3-1/4 OD Gray Filter Open Sided Compatible for 1-1/4 Hole (Red)**TAKPART**$16.39**4.3★**▲ 58%**](https://www.amazon.com/dp/B0F66GY6KH)
**~~View all trending →~~**
## **What buyers say about valve cover breather**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**30%
*“Fit excellent”*
**Quality-Overall**19%
*“Quality control has improved”*
**Value For Money**17%
*“Great for the price”*
**Advertised Vs Actual Product**8%
*“As advertised on time”*
**Assembly/Installation**6%
*“Installation isnt to bad”*
**Efficiency**3%
*“Does well”*
**Design-Overall**3%
*“add a classic look”*
**Leak-Proof**3%
*“Looks great and seems of good quality, seals up well and doesnt leak”*
**Heating**1%
*“Work great on my hot rod”*
**Soft Feel**1%
*“Looks and feels good”*
### **What buyers complain about **
**Size-Overall**18%
*“Too big”*
**Quality-Overall**8%
*“poor quality chrome”*
**Mounting**8%
*“Mounting design could be improved otherwise good quality parts as usual from EE”*
**Durability**8%
*“It broke”*
**Assembly/Installation**7%
*“Very frustrating installation”*
**Functionality-Overall**3%
*“Work like a grommet should work”*
**Filtration**3%
*“the only thing I had a problem with is that the breath filter had oil that would come out of it”*
**Motor Issues**3%
*“Does not any of my motors like it says”*
**Defective Material/Parts**3%
*“Defective catch can”*
**Advertised Vs Actual Product**3%
*“Does not fit as advertised”*
### **Top return reasons **
**Size-Overall**61%
**Compatibility-Overall**11%
**Advertised Vs Actual Product**6%
**Defective Material/Parts**4%
**Filtration**3%
**Functionality-Overall**2%
**Assembly/Installation**2%
**Mounting**1%
**Value For Money**1%
**Color**1%
## **Common questions**
- **Is valve cover breather profitable to sell on Amazon United States?**
- The niche generates $87K/yr across 53 tracked products. 1 of 8 products launched in the last 360 days are still selling. 90-day search growth is +5.4%. Flapen's verdict: Worth a look (55/100).
- **How competitive is the valve cover breather niche?**
- 31 brands and 102 sellers compete. The top 5 products take 37% of clicks and top 5 brands hold 52% of demand.
- **What do buyers complain about in valve cover breather?**
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Mounting. The return rate is 2.5%.
- **When does demand for valve cover breather peak?**
- Demand is steady year-round — the busiest month runs 1.6× the quietest.
- **What does it cost to enter the valve cover breather niche?**
- Listings span $4.76–$58.06; the average listing price is $19.24 (sweet spot $15–$100). The average incumbent carries 239 reviews — the moat a new listing must climb.
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