Top Line Manufacturing VSSHY11 Valve Stem Seal for Hyundai & Kia Engines

The Top Line Manufacturing VSSHY11 is an aftermarket replacement valve stem seal (also known as a valve stem oil seal) engineered for use in Hyundai and Kia engines. Designed to control oil consumption and protect combustion chamber integrity, this seal prevents engine oil from migrating down the valve stem and into the combustion chamber — a critical function in maintaining engine performance and reducing exhaust emissions.

Valve stem seals are a wear item that can harden, crack, or shrink over time due to sustained heat exposure. When a valve stem seal fails, symptoms typically include blue-gray exhaust smoke, increased oil consumption, fouled spark plugs, and rough idling. Replacing worn seals restores proper oil control and can eliminate these symptoms without a full engine overhaul.

Key Features:

• Replacement valve stem seal compatible with multiple Hyundai and Kia engine families
• Engineered to restore proper oil control and prevent oil from entering the combustion chamber
• High-temperature resistant elastomer construction for durability through repeated heat cycles
• Precision fit to valve guide for reliable sealing under operating pressures
• Manufactured by Top Line Manufacturing, a trusted supplier to the automotive aftermarket and OEM channels

The VSSHY11 is commonly referenced in Hyundai and Kia engine rebuild kits across 1.5L, 1.6L, and 2.0L engine applications. It is sold individually and is frequently used during cylinder head rebuilds, valve jobs, or targeted valve seal replacement procedures.