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Stop Leak

Explore our selection of Stop Leak. Find quality products, compare options, and get fast shipping on the items you need.

Stop Leak

More than 50 products

ToolSource offers 54 stop leak products, ranging from $0 to $1115.86, for automotive and industrial applications.

About Stop Leak

Our Stop Leak category addresses a wide range of fluid leaks, from engine coolant and radiators to transmissions and power steering systems. We stock solutions from trusted brands like Bar's Leaks - Rislone, known for their comprehensive line of sealants, including popular products like Bar's Leaks Transmission Stop Leak and Bar's Radiator Stop Leak Tablets. Whether you're looking for the best radiator stop leak or a specific solution like Bar's Stop Leak Water Pump, we have options to suit your needs.

We also carry specialized products from FJC, Radiator Specialty Company, and Uview, ensuring you have access to a variety of formulations and application methods. For more demanding repairs, consider Absolute Coatings (POR15) for robust sealing solutions or S.U.R. and R Auto Parts for specialized fittings and sealants. Additionally, we offer products from 3M Mar-Hyde and Alemite, providing a comprehensive selection to tackle any leak, big or small. Finding the best engine coolant stop leak or addressing a transmission leak is easier with our diverse inventory.

Frequently Asked Questions

ToolSource offers a wide selection of Stop Leak with over 54 products from leading industrial brands. Top brands include FJC, Radiator Specialty Company, Uview, Bar's Leaks - Rislone.

Consider the specific application, required specifications, and brand preference. Our product listings include detailed specifications to help you find the right fit.

ToolSource offers free shipping on orders over $99. Check individual product pages for specific shipping details and availability.
Displaying 1 to 36 (of 81 products)
(image for) 3/8" Fluid Line Stopper (1)
3/8" Fluid Line Stopper (1)
S.U.R. and R Auto Parts FLS38
Your Price: $9.92
(image for) 49216 Fuel Tank Sealer, 8 oz Can, Semi-Transparent Silver, 2
49216 Fuel Tank Sealer, 8 oz Can, Semi-Transparent Silver, 2
POR 15 49216
Your Price: $20.02
List Price: $20.31
1% off
(image for) 5 GALL YELLOW SAFETY CAN
5 GALL YELLOW SAFETY CAN
Justrite 7250230
Your Price: $168.45
(image for) 5/16" Fluid Line Stopper (1)
5/16" Fluid Line Stopper (1)
S.U.R. and R Auto Parts FLS516
Your Price: $9.92
(image for) Auto Master Leak Shield Sealant
Auto Master Leak Shield Sealant
Mastercool 53615-A
Your Price: $41.67
List Price: $48.96
15% off
(image for) Cool Seal A/C Leak Sealer
Cool Seal A/C Leak Sealer
Tracer Products TP-2210CS
Your Price: $50.13
(image for) CS/40 12oz. EQUAL FLEX
CS/40 12oz. EQUAL FLEX
IMIEQFXAC40
Your Price: $494.66
List Price: $833.42
41% off
(image for) DROP CEILING LEAK DIVERSION SYSTEM
DROP CEILING LEAK DIVERSION SYSTEM
New Pig TLS367
Your Price: $300.48
List Price: $424.76
29% off
(image for) FJC 615DT R-134a Refrigerant with Stop Leak - 12 oz
FJC 615DT R-134a Refrigerant with Stop Leak - 12 oz
FJC 615DT
Your Price: $14.94
List Price: $16.99
12% off
(image for) Head Gasket Fix 24oz
Head Gasket Fix 24oz
Bar's Leaks - Rislone 1111
Your Price: $94.00
(image for) Holdzit Strp 9" - 50 Pack
Holdzit Strp 9" - 50 Pack
Radiator Specialty Company R79B
Your Price: $57.42
List Price: $91
37% off
(image for) Kwik Seal (leak sealant) -
Kwik Seal (leak sealant) -
FJC 9165
Your Price: $24.68
(image for) Leak Guard One Shot Catridge
Leak Guard One Shot Catridge
Uview 480501
Your Price: $73.24
(image for) Perm Head Gasket Rpr 32oz 6pk
Perm Head Gasket Rpr 32oz 6pk
CRC Industries 401232
Your Price: $145.18
(image for) PIG Grippy Leak & Drip Mat - 32" X 50'
PIG Grippy Leak & Drip Mat - 32" X 50'
New Pig 25800
Your Price: $184.60
(image for) R134A STOP LEAK
R134A STOP LEAK
FJC 9140
Your Price: $8.27
(image for) R134A W/STOP LEAK CONDITIONER
R134A W/STOP LEAK CONDITIONER
FJC 618
Your Price: $27.09
List Price: $34.05
20% off
(image for) Spill Kit
Spill Kit
New Pig KIT441-WH
Your Price: $1,083.24
List Price: $1626.67
33% off
(image for) TANK CAP GASKET
TANK CAP GASKET
Brut Manufacturing 47100
Your Price: $2.18
(image for) TANK CLOSURE GASKET- SINGLE
TANK CLOSURE GASKET- SINGLE
Brut Manufacturing BR81400
Your Price: $50.03
(image for) Trans Slip Stop 32oz 12pk
Trans Slip Stop 32oz 12pk
CRC Industries 402033
Your Price: $103.38
(image for) Trans-X Transmission Stop Leak & Tune-Up 1X15OZ
Trans-X Transmission Stop Leak & Tune-Up 1X15OZ
CRC Industries 402015X6
Your Price: $68.80
List Price: $97.91
30% off
(image for) Quick Seal 2 Oz Stop Leak and
Quick Seal 2 Oz Stop Leak and
FJC 9160
Your Price: $22.05
(image for) U.S. STANDARD TANK SEALER - 8
U.S. STANDARD TANK SEALER - 8
Absolute Coatings (POR15) 49216
Your Price: $20.02
(image for) U.S. STANDARD TANK SEALER - PI
U.S. STANDARD TANK SEALER - PI
Absolute Coatings (POR15) 49208
Your Price: $31.44
(image for) U.S. STANDARD TANK SEALER - QU
U.S. STANDARD TANK SEALER - QU
Absolute Coatings (POR15) 49204
Your Price: $54.60
(image for) 1/2 ALUM DIA PUMP
1/2 ALUM DIA PUMP
Lincoln Industrial 85631
Your Price: $1,023.09
(image for) 12 Refrigerant With Leak Stop
12 Refrigerant With Leak Stop
The Main Resource 24049
Your Price: $26.43
(image for) 12PK B-60 High Mileage Oil System Rejuvenator
12PK B-60 High Mileage Oil System Rejuvenator
Berryman Products 7517
Your Price: $90.30
List Price: $131.95
32% off
(image for) 13 oz. Can R134A with Leak Sea
13 oz. Can R134A with Leak Sea
Interdynamics RLS-134
Your Price: $13.00
(image for) 14 oz. "Refill & Treatment"
14 oz. "Refill & Treatment"
Interdynamics RFT-134A
Your Price: $18.89
List Price: $19.34
2% off
(image for) A/C Seal Leak Stop Charge 4oz Aerosol (Case of 12)
A/C Seal Leak Stop Charge 4oz Aerosol (Case of 12)
The Main Resource STOP A
Your Price: $137.63
List Price: $159.65
14% off
(image for) A/C Total Leak Stop -4oz. Aerosol (Case of 12)
A/C Total Leak Stop -4oz. Aerosol (Case of 12)
The Main Resource ST27
Your Price: $442.80
List Price: $580.84
24% off
(image for) Alum Cooling Sys Stp Leak 72pk
Alum Cooling Sys Stp Leak 72pk
Radiator Specialty Company C501
Your Price: $122.35
List Price: $198.72
38% off
(image for) Block Seal Liquid 15 Oz 12pk
Block Seal Liquid 15 Oz 12pk
Radiator Specialty Company C616
Your Price: $31.16
List Price: $44.4
30% off
Displaying 1 to 36 (of 81 products)

Stop Leak Products

Stop leak products are vital solutions for automotive mechanics and technicians, providing a quick, reliable way to address leaks and prevent costly system failures. Designed to seal cracks, repair rubber or metal components, and protect against further damage, stop leak products are a must-have for handling fuel systems, transmissions, brake lines, and more. These tools not only save time but also prolong the lifespan of critical automotive systems, keeping vehicles running smoothly and reducing the likelihood of expensive repairs down the road. Modern stop leak solutions are available in a variety of applications tailored to specific automotive needs. Products like the U.S. Standard Fuel Tank Sealer are specifically engineered to stop rust, corrosion, and leaks permanently, while being resistant to all fuels. Other options, like R134A Stop Leak, are designed to repair rubber components, such as hoses and O-rings in air conditioning systems. Additionally, versatile tools such as the Banjo Fluid Line Stopper ensure workspaces remain clean and organized by safely capping fluid lines during maintenance, preventing spills and costly fluid loss. These products not only improve efficiency in the shop but also simplify complex repairs, making them indispensable for professionals and DIYers alike. Incorporating stop leak products into your automotive toolkit ensures critical systems are safeguarded, reduces downtime, and gives you the confidence to tackle even the toughest repairs with ease.