Cosworth YB | Sierra | Escort | All Models | Exhaust Valve Sodium Filled

****Original Specification, OE Manufacturer, Sodium Filled****

These valves have been manufactured exclusively for MAR Motorsport Ltd by the same company that manufacturers the OE Cosworth valve.

These parts have been made from the original drawing and not reverse engineered from sample parts like others. They are sodium filled as per the original, are the correct grade of steel as per the original parts and the valve seat is stellited. In short, they are identical in every way to the original YB0600 valves that the engines were built with.

Please be aware that there are valves available claiming to be sodium filled and the correct material which are quite simply not.

MAR Motorsport parts are sourced from world leading OEM suppliers and OE quality aftermarket suppliers, and often from the same factories as the major brands are using. Original Equipment Quality for popular and hard to find parts at competitive pricing.