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🛠️ Stop leaks before they stop you — keep your transmission running like new!
Bar's Leaks Transmission Stop Leak Concentrate is a powerful liquid formula designed to stop and seal transmission fluid leaks by restoring worn gaskets and seals. Compatible with all types of transmission fluids—including automatic, manual, and CVT—this pack of six 11-ounce bottles offers professional-grade maintenance to extend transmission life and prevent costly repairs.
| Brand | Bar's Leaks |
| Package Information | Bottle |
| Liquid Volume | 11 Fluid Ounces |
| Item Weight | 11 Ounces |
| Recommended Uses For Product | Automotive |
| Specific Uses For Product | Transmission maintenance and repair |
| Item Form | Liquid |
| Global Trade Identification Number | 10046087014209 |
| Manufacturer | Bar's Leaks |
| Unit Count | 66.0 Fluid Ounces |
| Number of Items | 6 |
| Model | 1420-6PK |
| Item Weight | 11 ounces |
| Package Dimensions | 7.72 x 6.77 x 5.83 inches |
| Item model number | 1420-6PK |
| Manufacturer Part Number | 1420-6PK |
J**Y
Two applications worked
This product really works... Took about a week for all the fluid to leak out of transmission... Added 1 bottle and a week later the fluid leaked out again It stopped leaking after I added a second bottle... After a week checked transmission fluid level... And level read FULL... Hasn't leaked since
D**K
WONDERFUL
WONDERFUL
J**M
Great product
I used this in my manual transmission and within 2 hours the leak stopped. By the time I did drive the mileage recommended, the leak had been long gone, great price.
B**B
Know what your using this for.
It may sound very simple, but this product is not a Fix all!! If you have a seal that maybe is slightly leaking, a dime or nickel size puddle under your vehicle overnight, this product works really well. If you have an 8 inch puddle under your vehicle, don’t use this product. Do it correctly and replace the seal. You can’t expect miracles for five bucks! I have used Bars products in the past. . If you keep it within the intended limits, it will do a great job for you.
M**J
It did not help a minor seal leak on manual transmission
I had shifter a shaft seal leaking on a four speed. It did not cure it. It did not help it.
A**T
Works, for now anyways
It's not a permanent fix, but it slowed the leak down to hardly anything, depending on what you need. My truck is old with high mileage, so not putting more money into her, but this stop gap is worth a try.
E**N
Stop the leak
Great product
J**K
didn't work for me
does not work
G**A
amazing product for Airgun repairs and maintenance!
i bought this product, not for anything to do with automobiles, but for caring for, and repairing the seals in my Air rifles and Air pistols. Bar's Leaks Transmission Stop Leak is a miracle product for restoring your various inner seals that make an Airgun work!
A**1
Works like a charm...
Had a minor leak. One application and good to go. Not a spot from my transmission for over two weeks.
B**B
Good
Slowed down the leak but didn't stop it. Mechanical problems and requires repair
R**I
Supplier delivered on time
Put this stuff in a leaky transmission. Did not want to junk the car yet but it’s old to fix it. It slowed the leak for now. Smells pretty poisonous.
B**N
Transmission
No more leak
Trustpilot
2 months ago
4 days ago