Victor 31375697 Engine Valve Stem Seal

The Victor Reinz 31375697 is a precision-engineered engine valve stem seal (also referred to as a valve guide seal or valve stem oil seal) designed to provide reliable oil control in the cylinder head valvetrain. Victor Reinz is a globally recognized OEM supplier trusted by vehicle manufacturers worldwide for sealing solutions that meet or exceed original equipment standards.

Key Features:

• Precise oil metering — controls the correct amount of oil lubricating the valve stem to prevent over- or under-lubrication of valve guides
• Combustion chamber protection — prevents cylinder head oil from being drawn into the combustion chamber, reducing oil consumption and exhaust smoke
• High-quality elastomer construction — engineered to resist premature hardening, cracking, and leaking associated with inferior seals
• OEM-grade tolerances — manufactured to precise dimensional specifications for a secure, consistent fit on the valve stem and guide
• Temperature and chemical resistance — material selection optimized for the thermal and chemical environment of the application

A worn or damaged valve stem seal allows engine oil to be drawn down the valve guides and into the cylinders, resulting in blue exhaust smoke at start-up, fouled spark plugs, and increased oil consumption. Replacing with a quality Victor Reinz seal restores proper valvetrain oil control and helps protect exhaust after-treatment systems from hydrocarbon contamination.