The NEW 590544 Flywheel Lawn Mower Parts are designed to fit Briggs & Stratton engines, making it a reliable replacement part for lawn mowers. Made of durable aluminum material in a silver color, this flywheel is lightweight at 1.85 pounds and has a rim size of 5.73 inches. It is specifically formulated for lawn mower use, with a load index of 1.0 and a rim width of 1.0 inch. The included aluminum flywheel 590544 is a crucial component for maintaining the performance of your lawn mower engine.