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Stop Leak

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

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 91 products)
Lincoln Industrial

1/2 ALUM DIA PUMP

1/2 ALUM DIA PUMP

Your Price: $1,023.09
Berryman Products

12PK B-60 High Mileage Oil System Rejuvenator

12PK B-60 High Mileage Oil System Rejuvenator

Your Price: $92.35
List Price: $131.95
30% off
S.U.R. and R Auto Parts

3/8" Fluid Line Stopper (1)

3/8" Fluid Line Stopper (1)

Your Price: $9.92
Justrite

5 GALL YELLOW SAFETY CAN

5 GALL YELLOW SAFETY CAN

Your Price: $168.45
S.U.R. and R Auto Parts

5/16" Fluid Line Stopper (1)

5/16" Fluid Line Stopper (1)

Your Price: $9.92
Uview

AC EXTENDYE BTL .25OZ/7.5ML

AC EXTENDYE BTL .25OZ/7.5ML

Your Price: $5.55
Mastercool

Auto Master Leak Shield Sealant

Auto Master Leak Shield Sealant

Your Price: $41.67
List Price: $48.96
15% off
Tracer Products

Cool Seal A/C Leak Sealer

Cool Seal A/C Leak Sealer

Your Price: $50.13

CS/40 12oz. EQUAL FLEX

CS/40 12oz. EQUAL FLEX

Your Price: $506.69
List Price: $833.42
39% off
New Pig

DROP CEILING LEAK DIVERSION SYSTEM

DROP CEILING LEAK DIVERSION SYSTEM

Your Price: $313.83
List Price: $424.76
26% off
Permatex

Exhaust/Tail Pipe Repair EACH

Exhaust/Tail Pipe Repair EACH

Your Price: $12.39
FJC

FJC 615DT R-134a Refrigerant with Stop Leak - 12 oz

FJC 615DT R-134a Refrigerant with Stop Leak - 12 oz

Your Price: $14.94
List Price: $16.99
12% off
Bar's Leaks - Rislone

Head Gasket Fix 24oz

Head Gasket Fix 24oz

Your Price: $96.13
Interdynamics

Hi-Mileage R-134a w/Stop Leak

Hi-Mileage R-134a w/Stop Leak

Your Price: $12.60
List Price: $19.33
35% off
Radiator Specialty Company

Holdzit Strp 9" - 50 Pack

Holdzit Strp 9" - 50 Pack

Your Price: $57.42
List Price: $91
37% off
Lucas Oil

Hyd Oil Boost/Stop Leak 5 Gal

Hyd Oil Boost/Stop Leak 5 Gal

Your Price: $117.77
List Price: $173.6
32% off
Solv-Tec

K Seal Heavy Duty Permanent Coolant Leak Sealer

K Seal Heavy Duty Permanent Coolant Leak Sealer

Your Price: $19.24
FJC

Kwik Seal (leak sealant) -

Kwik Seal (leak sealant) -

Your Price: $24.68
Uview

Leak Guard One Shot catridge

Leak Guard One Shot catridge

Your Price: $73.24
Radiator Specialty Company

M-P Sealant & Conditioner 12pk

M-P Sealant & Conditioner 12pk

Your Price: $27.19
List Price: $43.08
37% off
CRC Industries

Perm Head Gasket Rpr 32oz 6pk

Perm Head Gasket Rpr 32oz 6pk

Your Price: $25.22
New Pig

PIG Grippy Leak & Drip Mat - 32" X 50'

PIG Grippy Leak & Drip Mat - 32" X 50'

Your Price: $184.60
Vacutec

PLUG KIT

PLUG KIT

Your Price: $16.52
List Price: $25.53
35% off
FJC

R134A STOP LEAK

R134A STOP LEAK

Your Price: $8.27
Alemite

R134A W/ STOP LEAK, RED DYE

R134A W/ STOP LEAK, RED DYE

Your Price: $22.14
List Price: $34.05
35% off
FJC

R134A W/STOP LEAK CONDITIONER

R134A W/STOP LEAK CONDITIONER

Your Price: $26.75
Radiator Specialty Company

Radiatr Lquid Repair 11Oz 12pk

Radiatr Lquid Repair 11Oz 12pk

Your Price: $25.00
List Price: $36.96
32% off
Airsept

Smoke Treatment-Pint

Smoke Treatment-Pint

Your Price: $14.16
List Price: $21.31
34% off
Alemite

Spill Kit

Spill Kit

Your Price: $1,115.86
List Price: $1626.67
31% off
haltec

STABILIZER

STABILIZER

Your Price: $8.33
Radiator Specialty Company

Stop Smoke 14.5Oz 6pk

Stop Smoke 14.5Oz 6pk

Your Price: $24.02
List Price: $38.28
37% off
Radiator Specialty Company

Super HD Radiatr Clnr 32Oz 6pk

Super HD Radiatr Clnr 32Oz 6pk

Your Price: $38.70
List Price: $57.42
33% off
Brut Manufacturing

TANK CAP GASKET

TANK CAP GASKET

Your Price: $2.18
CRC Industries

Trans Slip Stop 32oz 12pk

Trans Slip Stop 32oz 12pk

Your Price: $17.03
Displaying 1 to 36 (of 91 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.

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