Description
K-Seal ULTIMATE K3501 Permanent Head Gasket Repair – Engine Block & Cylinder Head Leak Sealer
Advanced Head Gasket Repair Solution – Just Pour & Go
K-Seal ULTIMATE K3501 Head Gasket Repair is an advanced engine cooling system sealant specially formulated to help repair leaks associated with blown head gaskets, cracked cylinder heads, cracked engine blocks and porous engine castings.
Designed for water-cooled petrol and diesel engines, this powerful repair formula offers a convenient alternative to expensive mechanical repairs in suitable cases.
Using scientifically tested sealing technology, K-Seal ULTIMATE circulates through the cooling system and works to seal compatible leaks as the engine operates.
The simple Pour & Go formula eliminates the need for complicated preparation. There is no routine requirement to drain or flush the cooling system before application.
Simply shake the bottle, add the product to the radiator or coolant reservoir according to the manufacturer's instructions, and operate the engine as directed.
K-Seal ULTIMATE is designed to provide a permanent repair when a successful seal is achieved, helping restore cooling system integrity and reduce coolant loss.
Key Features & Benefits
Permanent Leak Repair – designed to create a lasting seal in suitable engine and cooling system leaks.
Head Gasket Repair – helps seal leaks associated with damaged or blown head gaskets.
Cracked Cylinder Head Sealing – formulated to address suitable cracks in cylinder heads.
Engine Block Leak Repair – helps seal compatible cracks and coolant leaks in engine blocks.
Porous Casting Protection – designed to seal leaks caused by porous engine castings.
Easy Pour & Go Application – straightforward treatment without specialist tools.
No Routine Draining or Flushing – normally added directly to the existing cooling system.
Compatible with All Antifreeze Types – formulated for use with different coolant and antifreeze technologies.
Petrol & Diesel Compatibility – suitable for compatible water-cooled engines.
Scientifically Tested Formula – developed using tested sealing technology.
Lifetime Repair Guarantee – advertised by K-Seal for successful repairs, subject to the manufacturer's guarantee terms.
Money-Back Guarantee – subject to the manufacturer's eligibility requirements and conditions.
Permanent Head Gasket Leak Repair
A damaged head gasket can cause coolant loss, engine overheating, pressure build-up and other cooling system problems.
Traditional head gasket replacement may require extensive engine disassembly and expensive labour.
K-Seal ULTIMATE Head Gasket Repair K3501 is designed to help seal suitable head gasket leaks without dismantling the engine.
The formula circulates with the coolant and acts at compatible leak locations, helping create a lasting seal.
Potential benefits include:
Helps reduce coolant loss caused by suitable head gasket leaks.
Supports restoration of cooling system sealing.
May help reduce the need for major mechanical repairs in suitable cases.
Provides a convenient treatment for compatible cooling system leaks.
Designed for long-lasting repair after successful sealing.
Important: Results depend on the type, size and severity of engine damage. The product cannot repair every blown head gasket or structural engine failure.
Cracked Cylinder Head & Engine Block Sealing
Cracks in cylinder heads and engine blocks can allow coolant to escape or enter areas where it should not be present.
K-Seal ULTIMATE is formulated to help seal suitable cracks and coolant leaks in these components.
Designed for:
Cracked cylinder heads.
Engine block coolant leaks.
Porous engine castings.
Head gasket sealing problems.
Compatible internal and external cooling system leaks.
The product may provide a practical repair option where the damage can be sealed chemically.
Severely cracked, warped or structurally damaged components may require professional mechanical repair or replacement.
Advanced Scientifically Tested Formula
K-Seal ULTIMATE K3501 uses a specialised sealing formulation designed to circulate through the cooling system and act at leak locations.
Unlike a conventional mechanical repair, the product does not require the cylinder head or engine block to be removed.
Its sealing action is intended to help address compatible coolant leaks while the engine operates.
Main advantages:
No engine disassembly required for application.
Simple addition to the cooling system.
Designed for long-lasting sealing.
Compatible with common antifreeze and coolant types.
Suitable for a wide range of water-cooled engines.
Just Pour & Go – Easy Application
One of the main advantages of K-Seal ULTIMATE Head Gasket Repair is its convenient application process.
The product is designed to be added directly to the cooling system without routine draining or flushing.
General application guidance:
Check the Engine – confirm the cooling system is suitable for treatment and follow the product label.
Allow the Engine to Cool – never remove a radiator or expansion tank cap while the system is hot or pressurised.
Shake the Bottle Thoroughly – mix the contents before application.
Add K-Seal ULTIMATE – pour into the radiator or suitable coolant reservoir according to the manufacturer's directions.
Operate the Engine – run or drive the vehicle as instructed so the product circulates.
Monitor the Repair – check coolant level, engine temperature and signs of leakage.
Important: Always follow the instructions printed on the K-Seal K3501 packaging. Do not continue driving an overheating engine, as serious damage may result.
Compatible with All Antifreeze & Coolant Types
K-Seal ULTIMATE K3501 is advertised as compatible with all common antifreeze and coolant types.
This makes it suitable for use in a wide range of water-cooled petrol and diesel engines without normally requiring a complete coolant change before treatment.
However, the vehicle must still contain the correct coolant specified by its manufacturer.
K-Seal is a repair treatment, not a replacement for antifreeze or normal cooling system maintenance.
Suitable Vehicles & Engines
K-Seal ULTIMATE Head Gasket Repair is designed for a wide range of water-cooled engines.
Typical applications include:
Passenger cars.
SUVs and 4x4 vehicles.
Small vans.
Light commercial vehicles.
Petrol engines.
Diesel engines.
Compatible water-cooled engines.
Suitability depends on the nature of the leak and the engine's cooling system configuration.
Treatment Quantity & Coverage
According to the supplied product information:
1 bottle – intended for cars, SUVs and small vans.
2 bottles – may be required for larger engines.
The correct quantity should be confirmed against the manufacturer's instructions and the cooling system capacity.
This listing includes one bottle only.
When to Consider K-Seal ULTIMATE
K-Seal ULTIMATE may be considered when a vehicle has a diagnosed coolant leak associated with:
A damaged head gasket.
A suitable cylinder head crack.
An engine block coolant leak.
Porous engine castings.
A compatible cooling system sealing problem.
Note: Symptoms such as overheating, white exhaust smoke or coolant loss can have several causes. A correct diagnosis is important before treatment.
K-Seal is not a substitute for necessary mechanical repairs where damage is extensive.
Technical Specifications
Brand: K-Seal
Product Name: ULTIMATE Permanent Head Gasket Repair
Manufacturer Part Number: K3501
Product Type: Engine & Cooling System Leak Sealant
Repair Application: Head Gaskets, Cylinder Heads, Engine Blocks & Porous Castings
Engine Compatibility: Water-Cooled Petrol & Diesel Engines
Application Method: Pour & Go
Cooling System Draining Required: Normally No
Cooling System Flushing Required: Normally No
Antifreeze Compatibility: All Common Coolant & Antifreeze Types
Repair Type: Permanent Sealing Treatment for Suitable Leaks
Recommended Coverage: 1 Bottle for Cars, SUVs & Small Vans; Follow Manufacturer Guidance for Larger Engines
Guarantee: Manufacturer's Advertised Lifetime Repair / Money-Back Guarantee, Subject to Terms
Condition: Brand New
Package Quantity: 1 Bottle
Package Contents
1 × K-Seal ULTIMATE Permanent Head Gasket Repair – K3501
Why Choose K-Seal ULTIMATE K3501?
K-Seal ULTIMATE Permanent Head Gasket Repair offers a convenient solution for addressing suitable coolant leaks caused by head gasket damage, cracked cylinder heads, engine blocks and porous castings.
Its advanced sealing formula is designed to work without engine disassembly, while the simple Pour & Go application makes treatment straightforward.
Compatible with common antifreeze types and suitable for water-cooled petrol and diesel engines, K-Seal ULTIMATE K3501 is a practical product for drivers seeking a lasting repair to compatible cooling system leaks.
