coolant vacuum refill kit
Worth a lookShows a sweet-spot price point ($50.72 avg), but soft demand (-21.0% this quarter) keeps it on the watch list.
Avg price
Great$50.72avg listing price — sweet spot $15–$100
Quality gap
Good4.3★avg incumbent rating — lower means beatable quality
Competition
Good46%top-5 click share — leaders hold, buyers still browse
Price range
Good$14.81–$150.45cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Good$461K$461K/yr · 528K searches
Review moat
Good1,264.41avg incumbent reviews — the moat a new listing must climb
Brand share
Good75%top-5 brand share — brands hold most of the demand
Returns
Okay3.4%return rate — above 6% kills the launch gate
Conversion
Bad1.7%search→purchase rate — share of searches ending in a sale
Growth
Bad-21.0%90-day search growth — must beat 0% to launch
Competition
The top 5 products take 46% of clicks — established leaders, but buyers still shop beyond them.Brands
17 falling
Sellers
64
Top-5 brand share
75%
Open market
20%
- Orion Motor Tech33%
- OEMTOOLS25%
- UView6%
- BILITOOLS6%
- CXPRO5%
- DAYUAN5%
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 34 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
OEMTOOLS Coolant Vacuum Refill Kit Coolant Pressure Tester Kit 5 Adapter
OEMTOOLS$93.114.4★2,361 rev
Orion Motor Tech Coolant Vacuum Refill Kit 13pc Radiator Cooling System Tool Set with Conical Adapter 4 Round Adapters for Leak Detection Cooling Refill Vacuum Coolant Fill Kit with Hose Black
Orion Motor Tech$45.624.3★85 rev
Orion Motor Tech Coolant Vacuum Refill Kit 13pc Radiator Cooling System Tool Set with Conical Adapter 4 Round Adapters for Leak Detection Cooling Refill Vacuum Coolant Fill Kit with Splashproof Hose
Orion Motor Tech$46.774.3★85 rev
Orion Motor Tech Coolant Pressure Tester Kit 33pc Master Coolant Vacuum Refill Kit with 23 Radiator Adapters Radiator Cooling System Pressure Tester Kit with Vacuum Pump Vacuum Purge & Refill Tool
Orion Motor Tech$72.644.3★650 rev
UView 550000 Airlift Cooling System Leak Checker and Airlock Purge Tool Kit OEM Approved Universal Connectors Minimum 90 PSI/60 Bar Used for Leak Detection Purging Airlocks A/C System Refill
UView$150.454.7★1,740 rev
Newest
by launch date
DISEN 33Pcs Coolant Pressure Tester Kit Master Coolant Vacuum Refill Kit with 23 Radiator Adapters Radiator Cooling System Pressure Tester & Vacuum Purge Tool for Cars Trucks SUVs
DISEN$69.9637 rev
Alltooetools Coolant Vacuum Refill Kit Radiator Cooling System Vacuum Refilling Gauge Tool with 32mm 35mm 40mm 45mm Apdapters
Alltooetools$27.832 rev
Orion Motor Tech Coolant Vacuum Refill Kit 13pc Radiator Cooling System Tool Set with Conical Adapter 4 Round Adapters for Leak Detection Cooling Refill Vacuum Coolant Fill Kit with Hose Black
Orion Motor Tech$45.6285 rev
BELEY Coolant Vacuum Refill Kit 9pc Auto Radiator Cooling System Tool Set with Conical Adapter 5 Round Adapters for Leak Detection Cooling Refill Vacuum Coolant Fill Kit with Splashproof Hose
BELEY$45.6113 rev
VEVOR Radiator Vacuum Refill Kit Automotives Cooling System Vacuum & Purge Fill Tool with Gauge Portable Radiator Coolant Filling Kit with Toolbox Universal Fit for Most Cars Vans SUVs and Trucks
VEVOR$28.8147 rev
Trending
90-day click momentumAlltooetools Coolant Vacuum Refill Kit Radiator Cooling System Vacuum Refilling Gauge Tool with 32mm 35mm 40mm 45mm Apdapters
Alltooetools$27.834.5★
DISEN 33Pcs Coolant Pressure Tester Kit Master Coolant Vacuum Refill Kit with 23 Radiator Adapters Radiator Cooling System Pressure Tester & Vacuum Purge Tool for Cars Trucks SUVs
DISEN$69.964.0★
Orion Motor Tech Coolant Vacuum Refill Kit 13pc Radiator Cooling System Tool Set with Conical Adapter 4 Round Adapters for Leak Detection Cooling Refill Vacuum Coolant Fill Kit with Hose Black
Orion Motor Tech$45.624.3★
BILITOOLS 10-Piece Coolant Vacuum Refill Kit Quick Airlift Coolant Refill Tool for Most Vehicles
BILITOOLS$46.784.0★
VEVOR Radiator Vacuum Refill Kit Automotives Cooling System Vacuum & Purge Fill Tool with Gauge Portable Radiator Coolant Filling Kit with Toolbox Universal Fit for Most Cars Vans SUVs and Trucks
VEVOR$28.814.3★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -21.0% search growth over the last 90 days.Peak months: Jul · busiest ÷ quietest = 1.9×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“nice quality set”
“Pretty handy”
“Great Value”
“worked well for my coolant change”
“Works ok”
“As advertised”
“Did not leak”
“Excellent fit”
“Worked very well, durable and easy storage”
“it held pressure consistently during testing”
What buyers complain about
“Cheap quality”
“leaking”
“adapters that were not compatible”
“Not large enough”
“leaked coolant everywhere”
“Does not pressurize system”
“Did not work as stated”
“Terrible Instructions”
“Not even worth any money”
“Was not advertised as such though”