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🚗 Don’t guess—test fast and stay ahead of costly engine repairs!
The OverZyn Head Gasket Tester Kit offers a quick, non-destructive way to detect combustion leaks by adding a safe, sensitive reagent to your radiator. Compatible with most vehicles, it delivers professional-grade accuracy with a visible color change in just 30-60 seconds, helping prevent expensive engine damage without complicated disassembly.
| ASIN | B0FZVCFY3R |
| Best Sellers Rank | #32,050 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #21 in Leak Detection Tools |
| Date First Available | November 5, 2025 |
| Item Weight | 5 ounces |
| Item model number | NZUS055 |
| Manufacturer | OverZyn |
| Package Dimensions | 7.64 x 5.35 x 2.32 inches |
J**M
Simple
Simple to use
D**.
Didn’t work
Did not work at all never changed color vehicle indeed had a bad headgasket
V**Z
It's good
It works
F**R
Works as it should
Works... says i dont have a bad head gasket...
J**S
not universal
Plug was too small to do the test. Not universal
B**Z
Scam
Yep, its a scam. Doesnt change color even with the fluid in a bottle stuck in the exhaust pipe.
J**J
Does not change color.
Did not change color, even when attached to exhaust pipe. Tried multiple times, would not change color under any conditions.
Trustpilot
2 days ago
5 days ago