This VICTOR REINZ valve stem seal, part number 70-35172-00, is engineered to provide a reliable seal for your engine's valve stems. Proper sealing is crucial for preventing oil from entering the combustion chamber, which can lead to increased emissions, oil consumption, and reduced engine efficiency. The precision manufacturing of this seal ensures a snug fit and durable performance, even under demanding engine conditions. It is designed to withstand high temperatures and the chemical environment within the engine, contributing to the longevity of your engine components. Replacing worn or damaged valve stem seals with this VICTOR REINZ part can help restore optimal engine function. This includes smoother running, improved fuel economy, and a reduction in exhaust smoke. It is a vital component for maintaining the health and performance of your vehicle's engine.