Head Bolt & Water Jacket Seal. - Henkle Loctite

Loctite 1158514 Head Bolt & Water Jacket Seal is a professional-grade, single-component anaerobic hybrid sealant engineered for critical engine assembly and repair. This specialized compound is formulated to prevent coolant and oil migration along head bolt threads and through water jacket passages, ensuring long-term sealing integrity in rebuilt or repaired engines.

Key Features

• Dedicated Engine Sealing: Specifically designed to seal head bolt threads and water jacket openings in both cast iron and aluminum engine blocks and cylinder heads. It also effectively seals gaps between threads.
• Optimized Torque Control: Provides consistent lubrication during assembly, facilitating proper torque application and reducing friction for a secure fit without fastener seizing.
• Robust Leak and Corrosion Protection: Creates a durable, leak-proof barrier against common engine fluids like coolants and oils, simultaneously preventing thread corrosion to aid in easier future disassembly.
• Vibration and Thermal Stability: Acts as a locking mechanism to resist loosening from vibration and thermal expansion, while maintaining lubricity for easier disassembly during future servicing.
• Consistent Performance: Engineered to withstand typical combustion chamber temperatures and cooling system pressures, supporting reliable sealing through repeated thermal cycling.

Applications

This Loctite sealant is an essential component during cylinder head installation across a broad spectrum of gasoline and diesel engines. It is widely utilized in passenger vehicles, light and heavy-duty trucks, high-performance applications, marine powerplants, and stationary industrial engines. The 1158514 is ideal for engine rebuilders, machine shops, and professional technicians seeking a dedicated head bolt and water jacket sealant to prevent fluid leaks, thread seepage, and ultimately reduce costly rework. It is also suitable for water pump bolts, thermostat housings, intake manifold bolts, and temperature sensors.

Specifications

• Manufacturer: Loctite
• Model Number: 1158514
• Weight: 4 lb
• Dimensions: 8 x 3.81 x 1.2 in