Top 10 Best Head Gasket Sealer For Northstar Engine Based On Customer Ratings

Formulated for hi-temp applications, or heavy-duty use
Replaces almost any cut gasket, and coats pre-cut gaskets to increase reliability
Makes reliable ‘formed-in-place’ gaskets that resist cracking, shrinking and migrating
Temperature range of -65F to 650F intermittent
Suggested Applications: Valve covers, oil pans, timing covers, water pumps, thermostat housings, transmission pans

This premium quality synthetic blend works with all types of motor/engine oil including regular petroleum, high mileage, synthetic blends and fully synthetic formulas
Works in all gasoline and diesel engines including turbocharged, Eco Boost, hybrid and even racing engines, including 3, 4, 5, 6, 8 and 10 cylinder engines in all cars, trucks, vans and SUV’s
Can also be used in heavy-duty applications as well as tractors, boats, RV’s, motorcycles (including wet clutch), ATV’s, lawn equipment
In most cases the oil leak issue will be repaired with a single dosage. However, for best results and to prevent the problems from reoccurring, use with every other oil change, or once per year
Use 1/2 bottle for smaller systems (3. 5 – 4. 4 quarts of oil), in larger systems use 1 bottle for every 6 quarts, in small engines use approximately 3oz to every quart of oil

Stops block leaks
Seals cracked cylinder heads and blocks
Repairs blown head gaskets
Dual Action 2 Part Formula — LIQUID CERAMIC: Liquid penetrates large and small leaks to form a seal actually harder than the original head gasket — REINFORCED FIBERS: Fiber additives lock together with liquid to increase strength and promote a permanent seal
Head Gasket Sealant is NOT COMPATIBLE with antifreeze and must only be added to the cooling system after ALL ANTIFREEZE has been flushed and removed.
Included components: Unit, Instruction Guide

Just Pour & Go – No Need for Expensive Head Gasket Repairs – The Safe and Easy Way to Fix a Coolant Leak
Fixes blown head gaskets, cracked heads and blocks
A permanent repair, guaranteed for the lifetime of the engine
Scientifically Tested – K-Seal is the only product to have been successfully tested by the equipment at Brighton University and classes as meeting the demands of ASTM D3147
If product did not seal head gasket leak, the system might be Over-pressurized, which causes back pressure and doesn’t allow the product to reach the problem area, on this page below under Technical Specification is a PDF Guide with instructions to follow to complete the repair successfully

Sensor-safe, non-corrosive formula designed for superior adhesion to oily surfaces and long term durability
Superior resistance to powertrain fluids including engine oil, transmission fluid, gear lube and coolants
Temperature Range -65°F to 500°F (-54°C to 260°C) intermittent
Suggested Applications: Valve covers, oil pans, intake manifold end seals, timing covers, and differential covers
Fit Type: Universal

Reliable, fast-drying, all-purpose sealant dries to a highly tacky, non-brittle film; remains tacky indefinitely
Tacky paste for holding cut gaskets in place during assembly; helps seal cut gaskets
Resists gasoline, oil, antifreeze, axle lube, kerosene, propane and butane; sensor-safe
Temperature Range: -65°F to 500°F (-54°C to 260°C)
Suggested Applications: Valve covers, fuel pumps, carburetors, manifold gaskets; seals any rubber, cork, paper or composite gasket
Fit type: Vehicle Specific

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

Slow-drying, non-hardening brush-top sealant
Resists gasoline, oil and grease
Approved for use in aviation as well as automotive applications
Suggested Applications: Close-fitting machined surfaces, sealing hoses, solid gaskets
Temperature range of -65F to 400F

Lubricates fasteners during assembly
Seals the gaps between the threads
Eliminates corrosion, which can cause difficulties if future disassembly is required
Prevents premature loosening
Typical applications include headbolts, water pump bolts, thermostat housings, intake manifold bolts, temperature sensors

Sensor-safe, noncorrosive RTV silicone gasket material formulated specifically for water pumps and thermostat housings
Highest water-glycol resistance available in an RTV silicone
Superior adhesion and flexibility; can be used as a gasket maker or dressing
Temperature Range: -65°F to 500°F (-54°C to 260°C) intermittent
Suggested Applications: Water pump and thermostat housings