Heavy Duty Valve Stem Seals

Sealing the valve stems is crucial for ensuring the efficiency and reliability of engines in commercial vehicles, trucks and construction machinery. This prevents oil from entering the cylinders, ensuring clean combustion and reducing emissions, while also helping to extend the engine’s service life. Precise sealing is particularly important under the high loads encountered in heavy-duty applications to minimise oil consumption and maintain full engine performance.
Freudenberg Sealing Technologies’ valve stem seals, offered exclusively by Corteco for the independent aftermarket, represent superior performance and original equipment (OE) quality. They effectively control leak rates throughout the engine’s entire service life and provide the necessary guide lubrication without allowing excessive oil consumption. Manufactured from high-performance materials, they offer low wear and maximum durability, even under extreme operating conditions.

View 3D animation: Freudenberg Sealing Technologies

Corteco also offers practical kits including installation sleeves for workshops. These complete solutions facilitate installation, reduce downtime, and ensure cost-efficiency and compatibility. Purchasers benefit from a streamlined ordering process and the assurance that they will receive products of original quality that meet the requirements of modern heavy-duty engines. With Corteco, you can rely on valve stem seals that guarantee reliability and durability even when operating pressure and temperature rise.