Porsche Exhaust Nut O.E.M. 99908400202

The Porsche Exhaust Nut O.E.M. 99908400202, manufactured by O.E.M. (manufacturer part number 18301737774), is a direct OE supplier part built to match original Porsche specifications. This exhaust nut is specifically designed for secure attachment of the muffler to the heat exchanger in select classic Porsche 911 (model years 1965–1974, including submodels Base, S, L, E, T, Carrera) and Porsche 914 (1970–1972, submodel 6 and Base with 2.0L H6 engine) applications, as detailed in the fitment notes. Each application typically requires a quantity of four nuts for complete installation. Engineered for reliable performance and exact fit, this part meets the needs of professional restorers and Porsche enthusiasts maintaining authentic exhaust assemblies.