The product is a genuine OEM Yamaha Reed Block Intake Manifold for Yamaha motorcycles from 1976-1981, specifically for TT500 and XT500 models. Made in Japan, this left Mag Stator Cover with manufacturer part number 583-13565-01-00 is a high-quality replacement part for your Yamaha motorcycle. With no modifications needed, this intake manifold is a reliable and authentic component for your vintage Yamaha bike, ensuring a proper fit and optimal performance.