valve cover breather
Worth a lookShows a thin review moat (239 avg reviews), but a small market ($87K/yr) keeps it on the watch list.
Review moat
Great239.47avg incumbent reviews — the moat a new listing must climb
Avg price
Great$19.24avg listing price — sweet spot $15–$100
Brand share
Great52%top-5 brand share — no brand owns this niche
Price range
Great$4.76–$58.06cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Great37%top-5 click share — an open shelf
Returns
Good2.5%return rate — above 6% kills the launch gate
Conversion
Okay3.8%search→purchase rate — share of searches ending in a sale
Quality gap
Okay4.5★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.
All 53 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
(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$15.514.6★49 rev
Spectre Performance 4299 .75 Push-In Breather with Grommet
Spectre$9.234.6★600 rev
Spectre Performance 4276 1-1/4 Push-In Breather with Grommet
Spectre$9.154.6★1,519 rev
(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$16.174.6★49 rev
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$12.764.5★115 rev
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$8.2643 rev
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$37.601 rev
(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$16.1749 rev
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$22.061 rev
SSN Polished Oval Finned Aluminum Valve Cover Air Breather PCV Valve Combo Compatible with Chevy Ford 2PCS.
SSN$47.103 rev
Trending
90-day click momentum2 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$37.605.0★
(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$16.174.6★
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$7.594.6★
SSN Black Oval Finned Aluminum Valve Cover Air Breather PCV Valve Combo Compatible with Chevy Ford 2PCS.
SSN$47.445.0★
MUGE RACING 2Pcs Air Filter Cold Air Intake Filter Breather 12mm Valve Cover Breather Filter For Car and Motorcycle(Carbon Fiber)
muge racing$10.124.4★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +5.4% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.6×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Fit excellent”
“Quality control has improved”
“Great for the price”
“As advertised on time”
“Installation isnt to bad”
“Does well”
“add a classic look”
“Looks great and seems of good quality, seals up well and doesnt leak”
“Work great on my hot rod”
“Looks and feels good”
What buyers complain about
“Too big”
“poor quality chrome”
“Mounting design could be improved otherwise good quality parts as usual from EE”
“It broke”
“Very frustrating installation”
“Work like a grommet should work”
“the only thing I had a problem with is that the breath filter had oil that would come out of it”
“Does not any of my motors like it says”
“Defective catch can”
“Does not fit as advertised”