engine cover
Worth a lookShows a fragmented shelf (top 5 take 16% of clicks), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Competition
Incredible16%top-5 click share — an open shelf
Brand share
Great43%top-5 brand share — no brand owns this niche
Returns
Great1.8%return rate — above 6% kills the launch gate
Avg price
Great$95.82avg listing price — sweet spot $15–$100
Review moat
Good530.19avg incumbent reviews — the moat a new listing must climb
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Market size
Okay$273K$273K/yr · 189K searches
Price range
Okay$5.99–$296.75cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Bad1.5%search→purchase rate — share of searches ending in a sale
Growth
Bad-17.9%90-day search growth — must beat 0% to launch
Competition
Clicks spread well past the top 5 (16% combined) — an open shelf where new products get seen.Brands
72 rising
Sellers
185
Top-5 brand share
43%
Open market
52%
- MITZONE13%
- A-Premium11%
- MILIPARTS8%
- GM GENUINE PARTS6%
- FRONEZER5%
- ProForm5%
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 163 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
GM Genuine Parts 12625893 Engine Intake Manifold Cover
GM GENUINE PARTS$59.694.7★175 rev
MILIPARTS Upgrade Aluminum Engine Valve Covers Compatible with 1999-2008 Cadillac Escalade Chevy Silverado Suburban Tahoe Trailblazer GMC Sierra Yukon Replaces Parts 12570427 12582224
MILIPARTS$76.654.4★240 rev
Engine Valve Cover with Gaskets Bolts & Oil Filler Cap Compatible with 2011-2020 Chevy Cruze Sonic Trax Volt | Cadillac ELR | Buick Encore 1.4L Turbo Replace# 55573746 25198498 264-968 25198874
FRONEZER$36.214.4★593 rev
14PCS Engine Splash Shield Hardware Kit Under Engine Cover Bolts & Clips for Skid Plate & Oil Pan Protection Replaces 90105-TBA-A00 90674-TY2-A01
Meorain$9.004.0★69 rev
Moroso 99400 Engine Bag Cover
Moroso$17.874.8★470 rev
Newest
by launch date
MOTOKU Aluminum Engine Valve Cover with Gasket and Bolts for VW Beetle 20052018 Golf 20102014; for Jetta 20052014 Passat 20122014 Rabbit 20062008 L5 2.5L DOHC
MOTOKU$88.410 rev
LuluViolen Aluminum Engine Valve Cover w/Gasket Compatible with Ford Expedition Explorer Mustang GT F150 F250 F350 5.4L 4.6L 2004-2014 Fit for Lincoln Mark LT Navigator 5.4L 2004-2010 Left & Right
LuluViolen$147.542 rev
DriveFix Engine Intake Manifold Cover Engine Top Cylinder Head Cover for Toyota Corolla 2010-2019 Camry 2011-2016 Lexus RX300 1999-2003 RX330 2004-2006 RX350 2007-2018
DriveFix$88.200 rev
PeakRider Clear Engine Storage Cover Bags Heavy-Duty Transparent PE
PeakRider$13.5142 rev
A-Premium Upgraded Aluminum Left Side Engine Valve Cover with Valve Cover Gasket & Bolt Compatible with Ram 1500 & Jeep Grand Cherokee Wrangler Cherokee Wrangler JK & Dodge & Chrysler & Volkswagen
A-Premium$123.790 rev
Trending
90-day click momentum
Upgrade Aluminum N20 Engine Valve Cover Kit Compatible with BMW 228i 320i 328i X1 X3 X5 Z4 2012-2018 L4 2.0L with Gasket Bolts & Oil Filler Cap Replace 11127588412 264-517
BGQG$124.015.0★
DriveFix Engine Intake Manifold Cover Engine Top Cylinder Head Cover for Toyota Corolla 2010-2019 Camry 2011-2016 Lexus RX300 1999-2003 RX330 2004-2006 RX350 2007-2018
DriveFix$88.200.0★
FRONEZER N62 Valve Covers Set with Gaskets & Bolts Compatible with 2002-2010 BMW 550i 745i 745Li X5 645Ci 545i 750i 750Li 650i Alpina B7 4.4L4.8L V8 Replace 11127522159 11127563474
FRONEZER$158.325.0★
Fabricated Aluminum Valve Cover for Small Block Chevy SBC 350 400 265 283
Pateyney$80.070.0★
MOTOKU Aluminum Engine Valve Cover with Gasket and Bolts for VW Beetle 20052018 Golf 20102014; for Jetta 20052014 Passat 20122014 Rabbit 20062008 L5 2.5L DOHC
MOTOKU$88.410.0★
Demand & seasonality
Weekly Amazon search volume, last 69 weeks — -17.9% search growth over the last 90 days.Peak months: Feb, Mar · busiest ÷ quietest = 2.0×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Fit like a glove”
“Solid quality”
“Fair price”
“No more oil leak”
“Smooth install”
“Works as advertised”
“Effective”
“The construction feels durable and solid, providing confidence that these covers will hold up well over time”
“Easy to use”
“surprisingly strong”
What buyers complain about
“Leaks oil”
“Cheap Quality”
“Did not fit”
“faded their color super fast”
“Failed quickly”
“they're not thicker than other bags”
“Faded paint”
“valve that you can't service in the valve cover didn't work at all”
“Installation was a 7 out of 10 on how hard to do”
“it's overpriced”