ac caps
Worth a lookShows demand growing +160.6% this quarter, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Growth
Incredible+160.6%90-day search growth — must beat 0% to launch
Quality gap
Incredible4.0★avg incumbent rating — lower means beatable quality
Review moat
Great116.43avg incumbent reviews — the moat a new listing must climb
Brand share
Great51%top-5 brand share — no brand owns this niche
Conversion
Great7.8%search→purchase rate — share of searches ending in a sale
Returns
Good2.4%return rate — above 6% kills the launch gate
Competition
Good50%top-5 click share — leaders hold, buyers still browse
Price range
Okay$3.49–$20.22cheapest to priciest tracked listing — scored on the share inside $15–$100
Avg price
Bad$8.26avg listing price — sweet spot $15–$100
Market size
Bad$37K$37K/yr · 57K searches
Competition
The top 5 products take 50% of clicks — established leaders, but buyers still shop beyond them.Brands
28 rising
Sellers
42
Top-5 brand share
51%
Open market
43%
- Dorman16%
- Ferianl10%
- KITUREK10%
- Figpade9%
- pinflaw7%
- Dekiphox5%
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 30 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Dorman 54374 Air Conditioning Service Port Caps Compatible with Select Models 2 Pack
Dorman$7.654.5★638 rev
Ferianl 10PCS Air Conditioning Service AC System Charging Port Covers 0.51/13mm Low Pressure Cap 0.62/16mm High Pressure Cap A/C System Port Sealing Kit Universal for Most Cars (Black)
Ferianl$6.103.7★47 rev
Car A/C Valve Core Caps Leakproof Air Conditioning System Seal Kit R134a Air Conditioning Repair System Charging Port Caps High Low Side Pressure Replacement Valve Caps (2PCS)
KITUREK$4.013.8★364 rev
pinflaw 10 PCS R134a AC High & Low Pressure Port Caps AC Air Tool Dust Cap Car Air Conditioner Repair Parts Universal for Most Cars (Blue & Red)
pinflaw$7.283.6★92 rev
2PCS Car Air Conditioner Valve Caps Dustproof Car AC Caps with Built-in Gasket Include High and Low Pressure Cap Professional Vehicle Accessories AC Valve Cap for R134A System (2PCS)
Figpade$4.044.0★88 rev
Newest
by launch date
Brass A/C Valve Caps for R134a Systems 2 Pcs
EVETMSXI$12.107 rev
2PCS Car AC Low Pressure Port Cap & High Pressure Cap Brass Cars AC Valve Caps with Sealing Ring Seal-Tight & Dust-Proof ACS Service Port Caps Car Accessories for R134A System
Figpade$9.5514 rev
2pcs Car AC Valve Caps for R134a System Brass High & Low Pressure Service Port Caps Leak Proof Covers for Subaru & Most Japanese Vehicles (Not Compatible with American Vehicles)
Penitue$9.6422 rev
CouTunp 10PCS Air Conditioning Service AC System Charging Port Covers Car AC Service Valve Cap Kit R134a Cap 13mm Low Pressure Port Cap & 16mm High Pressure Port Caps Universal for Vehicle (Black)
CouTunp$5.708 rev
QKYS 2PCS Brass R134a AC Valve Caps L&H Marked High & Low Pressure Port Caps Air Conditioning Valves Core Seal Leakproof for Toyota Honda Nissan Hyundai-Kia Subaru & Some American Cars/Trucks
QKYS$11.7622 rev
Trending
90-day click momentum2PCS Car AC Low Pressure Port Cap & High Pressure Cap Brass Cars AC Valve Caps with Sealing Ring Seal-Tight & Dust-Proof ACS Service Port Caps Car Accessories for R134A System
Figpade$9.553.2★
Brass A/C Valve Caps for R134a Systems 2 Pcs
EVETMSXI$12.102.9★
CouTunp 10PCS Air Conditioning Service AC System Charging Port Covers Car AC Service Valve Cap Kit R134a Cap 13mm Low Pressure Port Cap & 16mm High Pressure Port Caps Universal for Vehicle (Black)
CouTunp$5.703.4★
YoRise Car A/C Valve Core Caps R134a Air Conditioning Repair System Charging Port Caps Leakproof Seal Kit AC System High & Low Pressure Valve Cap Replacement Accessories (4PCS)
YoRise$3.493.0★
GAOLAOSY Car A/C Valve Core Cap AC System Charging Port Seal Caps Leakproof High & Low Side Pressure Valve Covers Kit Car R134a Air Conditioning Refrigerant Port Repair Accessories (2PCS)
GAOLAOSY$3.673.9★
Demand & seasonality
Weekly Amazon search volume, last 102 weeks — +160.6% search growth over the last 90 days.Peak months: Apr, May, Jun, Jul, Aug · busiest ÷ quietest = 10.8×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Fit perfect”
“The machining quality is impeccable”
“Good value”
“They do the job”
“As advertised”
“Better than plastic”
“Prevent leaks”
“Very easy to install”
“multiple sizes and colors”
“Durability”
What buyers complain about
“Not for my car even though it was claimed to fit”
“does not fit A/C valves”
“Very cheap made”
“Will break”
“The low pressure cap do not fit the valve”
“Will mess up your car”
“dont hold up which allows the cap to leak”
“Didnt Fit my Car as Advertised”
“They feel much heavier”
“These are for ports with threads not the push type socket ports”