---
title: "valve cover breather — Niche Verdict: Worth a look (55/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/automotive/valve-cover-breather"
last_updated: "2026-07-14T11:34:31.850Z"
locale: en
meta:
  description: "valve cover breather shows a thin review moat (239 avg reviews), but a small market ($87K/yr) keeps it on the watch list."
  "og:description": "valve cover breather shows a thin review moat (239 avg reviews), but a small market ($87K/yr) keeps it on the watch list."
  "og:title": "valve cover breather — Niche Verdict: Worth a look (55/100) | Amazon United States - Flapen"
---

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# **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 6% 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

## **Competition**

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%**

**Open market**

**43%**

- Spectre17% - Calvana15% - muge racing8% - RYANSTAR RACING7% - Edelbrock5% - K&N5%

## **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%3%$3K6%$5K9%$8K12%$10K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

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

All 53 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](https://m.media-amazon.com/images/I/41KAXOllInL.jpg)**(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](https://m.media-amazon.com/images/I/31C4+RQ8baL.jpg)**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](https://m.media-amazon.com/images/I/31+X38rDpCL.jpg)**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](https://m.media-amazon.com/images/I/41hg-G1OexL.jpg)**(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](https://m.media-amazon.com/images/I/51KAI362GfL.jpg)**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](https://m.media-amazon.com/images/I/31Dm7GFLOVL.jpg)**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 Sets SHLPDFM Valve Cover Breather Black Billet Aluminum Push-in 1-1/4 Breather Holes With Grommet Fits for Ford Chevy Mopar SBC BBC 350 383 454](https://m.media-amazon.com/images/I/41WpVk4clEL.jpg)**2 Sets SHLPDFM Valve Cover Breather Black Billet Aluminum Push-in 1-1/4 Breather Holes With Grommet Fits for Ford Chevy Mopar SBC BBC 350 383 454**SHLPDFM**$37.60**1 rev7mo ago](https://www.amazon.com/dp/B0G2T5BKTP) [![(2-Pack) Calvana 4299 3/4 Push-In Chrome Valve Cover Breather Pro - for Spectre Steel Construction Grommet Included 2.5 Height 3 Diameter](https://m.media-amazon.com/images/I/41hg-G1OexL.jpg)**(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) [![1 Set SHLPDFM Billet Aluminum Breathers Push-in Style Valve Cover Breather Round w/PCV Fits for 1.25 Chevy Ford Hot Rod Mopar Holes Valve Covers](https://m.media-amazon.com/images/I/41NkS9QT3eL.jpg)**1 Set SHLPDFM Billet Aluminum Breathers Push-in Style Valve Cover Breather Round w/PCV Fits for 1.25 Chevy Ford Hot Rod Mopar Holes Valve Covers**SHLPDFM**$22.06**1 rev10mo ago](https://www.amazon.com/dp/B0FQ3R6CQ9) [![SSN Polished Oval Finned Aluminum Valve Cover Air Breather PCV Valve Combo Compatible with Chevy Ford 2PCS.](https://m.media-amazon.com/images/I/317FN3SjTAL.jpg)**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)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![2 Sets SHLPDFM Valve Cover Breather Black Billet Aluminum Push-in 1-1/4 Breather Holes With Grommet Fits for Ford Chevy Mopar SBC BBC 350 383 454](https://m.media-amazon.com/images/I/41WpVk4clEL.jpg)**2 Sets SHLPDFM Valve Cover Breather Black Billet Aluminum Push-in 1-1/4 Breather Holes With Grommet Fits for Ford Chevy Mopar SBC BBC 350 383 454**SHLPDFM**$37.60**5.0★**▲ 146%**](https://www.amazon.com/dp/B0G2T5BKTP) [![(2-Pack) Calvana 4299 3/4 Push-In Chrome Valve Cover Breather Pro - for Spectre Steel Construction Grommet Included 2.5 Height 3 Diameter](https://m.media-amazon.com/images/I/41hg-G1OexL.jpg)**(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) [![QPINGH 2Pcs Air Filter Valve Cover Breather 12mm Air Filter Cold Air Intake Filter Breather Crankcase Breather Filter for Car and Motorcycle(Black) 2kq-l](https://m.media-amazon.com/images/I/41FwvYEQ+AL.jpg)**QPINGH 2Pcs Air Filter Valve Cover Breather 12mm Air Filter Cold Air Intake Filter Breather Crankcase Breather Filter for Car and Motorcycle(Black) 2kq-l**QPINGH**$7.59**4.6★**▲ 98%**](https://www.amazon.com/dp/B0D9J9ZKS3) [![SSN Black Oval Finned Aluminum Valve Cover Air Breather PCV Valve Combo Compatible with Chevy Ford 2PCS.](https://m.media-amazon.com/images/I/41naG3divNL.jpg)**SSN Black Oval Finned Aluminum Valve Cover Air Breather PCV Valve Combo Compatible with Chevy Ford 2PCS.**SSN**$47.44**5.0★**▲ 88%**](https://www.amazon.com/dp/B0FNM2TN81) [![MUGE RACING 2Pcs Air Filter Cold Air Intake Filter Breather 12mm Valve Cover Breather Filter For Car and Motorcycle(Carbon Fiber)](https://m.media-amazon.com/images/I/51VadwFlSzL.jpg)**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)

**~~View all trending →~~**

## **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×

## **Reviews**

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%