Top 10 Radiator Stop Leak Heavy Duty – Radiator Sealers

As an Amazon Associate I earn from qualifying purchases.

1. Bar's Leaks

#ad

11 oz., Bar's Leaks PLT11 Pelletized HD Radiator Stop Leak

#adBar's Leaks #ad - Lubricates water pump seals. Seals leaks. Helps control electrolysis. Conditions cooling system. Inhibits rust and corrosion.

Brand	Bar's Leaks #ad
Manufacturer	Bar's Leaks #ad
Height	6 Inches
Length	3 Inches
Weight	0.69 Pounds
Width	3 Inches
Part Number	PLT11
Model	PLT11
Warranty	See manufacturer

2. Bar's Leaks

#ad

16.9 oz , Gray, Bar's Leaks 1186 Liquid Aluminum Stop Leak

#adBar's Leaks #ad - Seals radiator leaks. Special shipping information: This item cannot be returned and has additional shipping restrictions. Bar's leaks liquid aluminum stop leak seals radiator leaks. Lowers water temperature. Seals freeze plug leaks. Seals freeze plug leaks. Repairs gasket leaks and heater core leaks. Repairs gasket leaks.

Brand	Bar's Leaks #ad
Manufacturer	Bar's Leaks #ad
Height	7.4 Inches
Length	2.6 Inches
Weight	1.2 pounds
Width	2.6 Inches
Part Number	1186
Model	1186
Warranty	1 year manufacturer

3. Bar's Leaks

#ad

18 oz., Bar's Leaks 1109 Block Seal Liquid Copper Intake and Radiator Stop Leak

#adBar's Leaks #ad - Repairs blocks. Seals larger leaks seals. Repairs blown head gaskets. Repairs freeze plug leaks. Repairs heater core leaks.

Brand	Bar's Leaks #ad
Manufacturer	Bar's Leaks #ad
Height	2.6 Inches
Length	7.5 Inches
Weight	1.3 Pounds
Width	2.6 Inches
Part Number	1109
Model	1109

4. Liqui Moly

#ad

0.25 l, 1 Pack, Liqui Moly 20132 Radiator Stop Leak

#adLiqui Moly #ad - For all cooling water and heating systems with and without water filters. Secures the combustion chamber from damages caused by coolant admission. Liqui moly radiator stop-leak completely seals such leaks immediately with ease.  .

Brand	Liqui Moly #ad
Manufacturer	Liqui Moly #ad
Height	0 Inches
Length	0 Inches
Width	0 Inches
Part Number	20132
Model	20132

5. Versachem

#ad

Versachem 14109-12PK Heavy Duty Radiator Stop Leak, 1 oz., Pack of 12

#adVersachem #ad - Compatible with antifreeze. Works quickly and easily to stop larger leaks in the radiator. Water resistant. Prevents rust. Contains pure copper particles, and special hardening and sealing agents to fill holes.

Brand	Versachem #ad
Manufacturer	Versachem #ad
Part Number	14109-12PK
Model	14109-12PK

6. Cyclo

#ad

Cooling System Stop Leak & Sealer, Cyclo

#adCyclo #ad - Quickly finds and seals leaks with natural fibers. Circulates without clogging. Polishes water pump seals thus preventing leaks. Safe for all cooling systems.

Brand	Cyclo #ad
Manufacturer	Cyclo #ad
Height	36 Inches
Length	72 Inches
Weight	0.5 Pounds
Width	36 Inches
Part Number	C52-EACH
Model	C52-EACH

7. G-PLUS

#ad

G-PLUS 2 Row 42MM Aluminum Cooling Racing Radiator Stop Leak Compatible With 1992-2000 HONDA CIVIC D15 D16 EG EK SOHC

#adG-PLUS #ad - Any question pls feel free to contact. Overall size: 464mm × 369mm × 60mm. Superior Durability and Impact Resistance. Meets the original Equipment OE standards, ensuring replacement fit just like the original.

Produced under strict quality control standards, easy to install. Compatibility: compatible with honda civic d15 d16 eg ek sohc 1992 1993 1994 1995 1996 1997 1998 1999 2000 Core size in approx: 350mm × 348mm × 42mm. Dimension: inlet/outlet size: 28mm/28mm. Fast shipping: Directly shipping from USA. Oe standard: heavy-duty aftermarket replacement at an affordable price. Easy installation: no modification Requires.

Brand	G-PLUS #ad
Manufacturer	Gplusmotor #ad
Height	17.32 Inches
Length	21.26 Inches
Weight	8.86 Pounds
Width	6.69 Inches
Part Number	02ARA8303SSL
Warranty	1 year warranty

8. KALIMEX LTD

#ad

K-Seal ST5501 Multi Purpose One Step Permanent Coolant Leak Repair, Blue

#adKALIMEX LTD #ad - Mixes with All Antifreeze. No draining Or Flushing. Fixes cracks and leaks in radiator, freeze Plugs, Cylinder Heads, head gasket, Heater Core, Water Pump Casing And Engine Blocks. Permanent coolant leak Repair - Just Shake, Pour And Go.

Brand	KALIMEX LTD #ad
Manufacturer	K-Seal #ad
Height	6 Inches
Length	7.87 Inches
Weight	0.6 Pounds
Width	2 Inches
Part Number	ST5501
Model	ST5501
Warranty	When K-Seal makes a repair we guarantee it will be permanent

9. K-Seal

#ad

K-Seal ST5516 HD Multi Purpose One Step Permanent Coolant Leak Repair

#adK-Seal #ad - Permanent coolant leak repair - Just shake, pour and go. Mixes with all antifreeze. Fixes cracks and leaks in radiator, cylinder heads, heater core, freeze plugs, head gasket, water pump casing and engine blocks. If product did not seal head gasket leak, which causes back pressure and doesn't allow the product to reach the problem area, the system might be Over-pressurized, on this page below under Technical Specification is a PDF Guide with instructions to follow to complete the repair successfully. No draining or flushing.

Brand	K-Seal #ad
Manufacturer	K-Seal #ad
Height	1.9 Inches
Length	5.9 Inches
Width	4.1 Inches
Part Number	ST5516
Model	ST5516
Warranty	When K-Seal makes a repair we guarantee it will be permanent

10. Bar's Leaks

#ad

Bar's Leaks Radiator Stop Leak 2X Concentrate, 6 oz.

#adBar's Leaks #ad - Country of origin :United States. Product type :auto ACCESSORY. Package dimensions :4. 064 cm l x6. 096 cm w x12. 446 cm H. Package weight :081lbs.

Brand	Bar's Leaks #ad
Manufacturer	Bar's Leaks #ad
Height	6.5 Inches
Length	1.8 Inches
Weight	0.42 Pounds
Width	3 Inches
Part Number	1194
Model	1194
Warranty	No