The Yamaha RD 125 cylinder head and base gasket set includes two genuine parts from Yamaha, specifically designed for models from 1976 to 1981. Made in Japan, these parts are part of the original equipment manufacturer (OEM) line, ensuring a perfect fit and quality construction. The manufacturer part numbers 1E7-11181-00 and 1E7-11351-00 guarantee compatibility and authenticity, making this set an essential component for maintaining and repairing your vintage Yamaha RD 125 motorcycle.