BEST RADIATOR STOP LEAKS

Choosing the best RADIATOR STOP LEAKS may be challenging as you have to screen through a large amount of similar products available on the market. Don’t worry though; we have got our hands on 10 trendy and top-rated products and below is our recommendation.

10 BEST RADIATOR STOP LEAKS

IMAGE PRODUCT RATING PRICE
1. K-SEAL Coolant Leak Repair, ST5501 8oz, Multi-Purpose Formula Stops Leaks in...
2. K-SEAL Coolant Leak Repair ST5516 Heavy Duty 16oz, Multi-Purpose Formula for...
3. K-SEAL Ultimate Permanent Head Gasket Repair ST3501 16oz Multi-Purpose...
4. For Ford Mustang GT/SVT V8 4.6L 1997 1998 1999 2000 2001 2002 2003 2004...
5. 2 Row Core Aluminum Racing Radiator Stop Leak For FORD F250 F350 F450 6.0L...
6. 62mm Aluminum Racing Radiator Stop Leak For FORD MUSTANG/SHELBY V8 I6 MT&AT...
7. Aluminum Alloy Racing Cooling Radiator Sports Stop Leak For Lotus Europa...
8. 2 Row Aluminum Racing Radiator Stop Leak For Honda S2000 2.0L/2.2L 2000 2001...
9. All Aluminum Racing Cooling Radiator Stop Leak For 67-69 CHEVY CAMARO BIG...
10. 3 Row 52mm Aluminum Cooling Racing Radiator Stop Leak Compatible For Honda...

Best RADIATOR STOP LEAKS

K-SEAL Coolant Leak Repair, ST5501 8oz, Multi-Purpose Formula Stops Leaks in the Radiator, Head Gasket, Block, Water Pump Casing, Heater Core, and Freeze Plug - Pour and Go - Trade Trusted-Stop Leak

 in stock
14 new from $12.47
Free shipping
VIEW ON AMAZON
Amazon.com
as of September 4, 2020 12:35 am

Features

  • REPAIRS IN MINUTES: Formulated to permanently weld radiators, including hard plastic aluminum heads and blocks in old and new cars. The only car radiator and gasket sealant university tested to meet ASTM D3147. Save time/money. US Bestseller
  • SEALS CRACKS AND STOPS LEAKS: A DIY alternative to costly repairs, our coolant leak fix permanently seals cracks and holes! It quickly repairs your leaking radiator, freeze plug, heater core and water pump casing with no adverse impact on efficiency.
  • POUR AND GO: Our cooling system sealer is easy to use: just shake the bottle, add to your radiator/overflow and run the engine! Unlike some traditional products, it mixes with all types of antifreeze, absolutely no draining or flushing required.
  • SCIENTIFICALLY TESTED: Safe and effective, our cracked block repair can seal leaks up to 1/32 of an inch! Once cured, the repair withstands the high pressure of the combustion chamber, all without failing or clogging the cooling system.
  • CUSTOMER SUPPORT: If K-Seal engine coolant leak stop doesn’t seal, the system might be over-pressurized. Check the Technical Specification section of this page for extra instructions for a successful repair. Over 8 million bottles sold worldwide!

K-SEAL Coolant Leak Repair ST5516 Heavy Duty 16oz, Multi-Purpose Formula for Truck/Tractor Coolant Leaks in the Radiator, Head Gasket, Water Pump Casing & Heater Core, A True Pour & Go -Trade Trusted

 in stock
9 new from $13.91
Free shipping
VIEW ON AMAZON
Amazon.com
as of September 4, 2020 12:35 am

Features

  • REPAIRS IN MINUTES: Create a permanent weld within the entire coolant system, including on hard plastic radiators and aluminum heads and blocks in larger capacity engines, AG, RV etc. The only industrial coolant sealant university tested to meet ASTM D3147.
  • SEALS CRACKS AND STOPS LEAKS: Avoid expensive downtime, our coolant stop leak will permanently seal cracks and holes! Quickly repair your head gasket, block, leaking radiator, freeze plug, heater core & water pump casing with no adverse impact on efficiency.
  • POUR AND GO: Our cooling system sealer is easy to use just shake the bottle, add to your radiator/overflow and run the engine! Unlike some competitive products, it mixes with all types of antifreeze, no draining, flushing or pulling the thermostat required.
  • SCIENTIFICALLY TESTED: Safe and effective, our Heavy Duty Coolant stop leak repair seals leaks up to 1/32 of an inch! Once cured, it withstands the high pressure of the combustion chamber, without failing or clogging the cooling system. US Bestseller
  • CUSTOMER SUPPORT: If our engine coolant leak doesn’t seal your head gasket, the system might be over-pressurized. Check the Technical Specification section of this page for extra instructions for a successful repair. Over 8 million bottles sold. Save time/money

K-SEAL Ultimate Permanent Head Gasket Repair ST3501 16oz Multi-Purpose Formula Stop Leaks in the Head Gasket, Cracked/Porous Blocks, Radiator & Heater Core. A True Pour & Go, Trade Trusted Stop Leak

 in stock
7 new from $18.00
Free shipping
VIEW ON AMAZON
Amazon.com
as of September 4, 2020 12:35 am

Features

  • REPAIRS IN MINUTES: Permanently fix blown head gaskets, cracked heads and cracked/porous blocks including aluminum heads in old and new cars. The only head gasket and block sealant that is 3rd party tested to meet ASTM D3147. Save time/money
  • SEALS CRACKS AND STOPS LEAKS: A DIY alternative to costly repairs, our head gasket fix permanently seals cracks and holes! Quickly repair your blocks, leaking radiator, freeze plug, heater core and water pump casing with no adverse impact on efficiency.
  • POUR AND GO: Our head gasket sealer is easy to use just shake, add to your radiator/overflow and run the engine! Unlike some competitive products, it mixes with all types of antifreeze, absolutely no draining, flushing or pulling the thermostat required.
  • SCIENTIFICALLY TESTED: Safe, effective, our head gasket and block repair seals leaks up to 1/32 of an inch! Once cured, the repair withstands the high pressure of the combustion chamber, all without failing or clogging the cooling system. US Bestseller
  • CUSTOMER SUPPORT: If our head gasket repair leak doesn’t seal your intake gasket, the system might be over-pressurized. Check the Technical Specification section of this page for extra instructions for a successful repair. Over 8 million bottles sold.

For Ford Mustang GT/SVT V8 4.6L 1997 1998 1999 2000 2001 2002 2003 2004 Engine Aluminum Performance Cooling Radiator Stop Leak

 in stock
1 new from $133.42
VIEW ON AMAZON
Amazon.com
as of September 4, 2020 12:35 am

Features

  • Inlet/Outlet Size: 38mm/45mm
  • This radiator is heavy duty designed, cooling capacity is increased about 40% than standard radiator ,really well packed,exceeds OEM spec.
  • Made of high quality full T-6061 aluminum construction
  • The core of the radiator is welded in vacuum brazing furnace, no epoxy. The tanks are 100% welded by TIG.
  • Improves cooling by 35% to 45% temperature

2 Row Core Aluminum Racing Radiator Stop Leak For FORD F250 F350 F450 6.0L Powerstroke 2003 2004 2005 2006 2007 AT/MT

 in stock
3 new from $235.00
VIEW ON AMAZON
Amazon.com
as of September 4, 2020 12:35 am

Features

  • For FORD F250 F350 F450 6.0L Powerstroke 2003 2004 2005 2006 2007 AT/MT
  • High Performance, 30% Extra Flow.
  • Made of high quality full T-6061 aluminum construction
  • Stronger and higher capacity for coolant than stock units
  • Vehicle Tested. Perfect Fit. 1 Year Manufacturer Warranty

62mm Aluminum Racing Radiator Stop Leak For FORD MUSTANG/SHELBY V8 I6 MT&AT 1964 1965 1966 Silver

 in stock
1 new from $101.96
VIEW ON AMAZON
Amazon.com
as of September 4, 2020 12:35 am

Features

  • Inlet/Outlet: 1.50" / 1.75"
  • Improves cooling by 35 - 45% Temp
  • Direct Bolt-On OEM Fitment or Replacement
  • Made of High Quality Full T-6061 Aluminum Construction
  • Stronger & Higher Capacity for Coolant than Stock Units

Aluminum Alloy Racing Cooling Radiator Sports Stop Leak For Lotus Europa Coupe S1 S2 TC 1.5/1.6l 66-76

 in stock
1 new from $134.92
VIEW ON AMAZON
Amazon.com
as of September 4, 2020 12:35 am

Features

  • This aluminum radiator is designed to provide maximum cooling efficiency to prevent premature engine failure.
  • Its light-weight, and high-heat transferring aluminum features a tube and fin design that, dramatically increases surface area that enables the heat to dissipate more efficiently.
  • This Aluminum Radiator is at least 40% more efficient than stock ones.
  • Most importantly, it has a much higher capacity for coolant than stock ones, which means that your cooling system will be more efficient and will be more resistant to temperature surges in racing applications.
  • Improves cooling by 35 - 45% temp.

2 Row Aluminum Racing Radiator Stop Leak For Honda S2000 2.0L/2.2L 2000 2001 2002 2003 2004 2005 MANUAL

 in stock
1 new from $117.00
VIEW ON AMAZON
Amazon.com
as of September 4, 2020 12:35 am

Features

  • Improves cooling by 35 - 45% temp.
  • ROW: 2
  • Inlet/Outlet: 1.25"/ 1.25"
  • Radiator Cap: included
  • Vehicle Tested. Perfect Drop-In Fit. 1 Year Manufacturer Warranty

All Aluminum Racing Cooling Radiator Stop Leak For 67-69 CHEVY CAMARO BIG BLOCK/FIREBIRD With 2 PCS 10" in Cooling Fan 1968

 out of stock
VIEW ON AMAZON
Amazon.com
as of September 4, 2020 12:35 am

Features

  • Inlet/Outlet Size: 1.57"/1.77"(40mm/45mm)
  • Improves cooling by 35% to 45% temperature
  • Made of high quality full T-6061 aluminum construction
  • Stronger and higher capacity for coolant than stock units
  • This aluminum radiator is designed to provide maximum cooling efficiency to prevent premature engine failure.

3 Row 52mm Aluminum Cooling Racing Radiator Stop Leak Compatible For Honda Civic 1992-2000 EK EG D15 D16 In/Out 28mm 1993 1994 1995 1996 1997 1998 1999

 in stock
1 new from $71.67
VIEW ON AMAZON
Amazon.com
as of September 4, 2020 12:35 am

Features

  • Compatible For HONDA CIVIC D15 D16 EG EK 1992 1993 1994 1995 1996 1997 1998 1999 2000
  • Inlet/Outlet: 28mm/28mm ,Row :3 Row
  • Radiator Cap: 1.1 Cap included
  • Made of High Quality Full T-6061 Aluminum Construction
  • Vehicle Tested. Perfect Fit. 1 Year Manufacturer Warranty