This Porsche Shift Boot is designed for 964 models (1989-1994) and 993 models (1995-1997). Compatible with popular aftermarket shifters like Carbone and Nine Eleven, it helps maintain smooth gear changes. Since the original boots can wear out over time, we suggest checking yours by loosening the factory boot to examine the rubber underneath. New boots come with a protective powder coating; clean gently using a mild cleaner and soft brush, then apply several layers of vinyl or rubber protectant for best results.