Genuine OEM Volkswagen Nut, part number WHT010502. This nut is a fastener designed to join or secure components within the exhaust system, specifically shown near the catalytic converter assembly. It is crucial for ensuring a tight seal between exhaust components, preventing leaks and maintaining emissions control. The nut is made from heat-resistant material suitable for exhaust applications. Genuine OEM nuts offer the correct thread engagement and material properties for reliable exhaust system integrity.