Yoshimura Oil Filler Plug Red Yamaha WR250R/X YZ250/450F High usage part that screams out to all who see it that this is one serious racing engine. Made from high grade aluminum Anodized for a lasting finish and finally topped off with laser etched Yoshimura logos. Pre-drilled for safety wire New Works Edition finish features a special electrolytic process that creates a dense, super-hard surface that is extremely resistant to wear, heat and fade from sunlight