car radiator leak repair comparison - September 2026

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K-Seal Coolant Leak, 236ml | Multi-use Car Radiator & Head Gasket Repair Sealant

K-Seal

free shipping

To the product (5 offers)

9,9

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LIQUI MOLY Pro-Line Radiator Stop Leak K | 250 ml | Cooler additive | SKU: 5178, red

Liqui Moly

5% off

free shipping

To the product (6 offers)

9,8

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ARZER Car Radiator & Hose Stop Leak Repair Additive - Anti Corrosion 250ml - Repairs Weld Cooling System Rads

ARZER

free shipping

To the product (1 offer)

9,7

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Holts LOYRW2R Radweld Cooling System Stop Leak & Radiator Repair 250ml (Pack of 2)

Holts

free shipping

To the product (1 offer)

9,7

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Car Radiator & Hose Stop Leak Repair Additive Anti Corrosion 250ml Repairs Weld Cooling System Rads

Generic

17% off

free shipping

To the product (1 offer)

9,7

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Power Maxed Radiator Stop Leak & Coolant Leak Repair 250ml - Cooling System Sealant for Radiators, Heater Cores & Gaskets - Compatible with All Antifreeze & Coolant - Fast Acting Treatment

Power Maxed

8% off

free shipping

To the product (1 offer)

9,5

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J-B Weld 2120 Radiator Repair Kit

J-B Weld

free shipping

To the product (1 offer)

9,5

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Rain-X Windscreen Cracks/Chips Repair Kit Easy Application - 15min Repair | Quick & Cost-Effective Solution Prevents Spreading - Strengthens Glass

Rain-X

13% off

free shipping

To the product (1 offer)

9,5

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‎Best Price Square Car Radiator & Hose Stop Leak Repair Additive 250ml – Anti-Corrosion Coolant Sealant for Radiators, Heater Cores, Gaskets & Welded Joints in Cooling Systems

‎Best Price Square

free shipping

To the product (1 offer)

9,4

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ERRECOM Car Cooling System Repair and Refill Kit, Includes Bluet Radiator Leak Stop (250 mL) + Red Cool Ready-to-Use Red Coolant Antifreeze -10°C/+103°C G12 (1 L)

ERRECOM

free shipping

To the product (1 offer)

9,4

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Goop Puncture Preventative/Proofer/Treatment 500ml Bottle

Goop

£ 11.99 free shipping

To the product (2 offers)

HOCHSTE Radweld 250ml - Radiator & Cooling System Leak Repair, Stops Leaks Fast, Prevents Future Damage Blue - 2 Pack 500ml

HOCHSTE

£ 13.99 free shipping

To the product (1 offer)

Permatex 30301 Radiator Repair - Stop Leak, 16 fl oz, Protecting Against Coolant Loss, Stopping Leaks and Seepage from Head Gaskets

Permatex

£ 17.95 free shipping

To the product (1 offer)

14% off

5in1 Radiator Stop Leak 310ml

5in1

£ 12.74 free shipping

To the product (3 offers)

XADO AtomEx Engine Radiator Cooling System Head Gasket Seal STOP LEAK Treatment

XADO

£ 16.90 free shipping

To the product (1 offer)

Wynn's Engine Oil Stop Leak Sealer Treatment Additive For All Engine Types 325ml & Car Radiator Stop Leak Sealant Antifreeze Coolant Repair Additive 325ml

Wynn's

£ 14.28 free shipping

To the product (1 offer)

12% off

ROFPM Car Sealing Strip Adhesive, Windscreen Sealant for Car, 100ml | Black Silicone Sealant, Automobile Sealaant, Waterproof, High Temperature, Fast Curing, Multi-Purpose for Cars, Windows

ROFPM

£ 9.99 free shipping

To the product (1 offer)

Orion Motor Tech 19pc Cooling System Radiator Pressure Tester Kit, Universal Water Tank Leak Detector & Vacuum Purge Coolant Refill Tool Set

Orion Motor Tech

£ 36.99 free shipping

To the product (1 offer)

Bar's Leaks Original Cooling System Stop Leak

Bars

£ 10.31 free shipping

Only:

66hrs

56min

07sec

To the product (1 offer)

6% off

Lucas Oil 10008 Power Steering Stop Leak, 355 ml, Beige089

Lucas Oil

£ 12.29 free shipping

To the product (5 offers)

10% off

Tetrion Make Good Fix a Leak 400ml

Tetrion

£ 10.69 free shipping

To the product (4 offers)

DWChemicals TEC 2000 Radiator Stop Leak Car Motorcycle Antifreeze Coolant System Repair

TEC-2000

£ 13.98 free shipping

To the product (1 offer)

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Car radiator leak repair in comparison

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Car radiator leak repair in comparison

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