Order Includes: 1x Regulator Rectifier. Compatible with Yamaha models: SR540 SR540D SR540E SR540F 1980 1981 1982. Part Numbers: 82F-81910-A0-00, 898-81910-12-00, 7XE-81910-00-00. We strongly suggest comparing the posted picture to the unit(s) that needs to be replaced..
