Genuine OEM Jaguar EGR Valve O-Ring Gasket, part number C2S45747. This small but vital component provides a tight, leak-free seal for the Exhaust Gas Recirculation (EGR) valve, which is essential for proper engine operation and emissions control. It is installed between the EGR valve and its mounting surface. Made from a durable, heat-resistant rubber compound, this O-ring withstands high temperatures and corrosive exhaust gases. Using a genuine OEM gasket ensures precise dimensions and material composition for a reliable, long-lasting seal, preventing costly exhaust leaks and maintaining engine efficiency.