The John Deere L28921 is a genuine OEM grease nipple designed for lubrication points on a wide range of John Deere agricultural and construction machinery. This essential component facilitates the application of grease, ensuring smooth operation and extended lifespan of moving parts. Manufactured to John Deere's specifications, it provides a reliable and secure connection for grease guns, preventing contamination and leakage. Regular maintenance with genuine John Deere parts like the L28921 helps maintain machine performance and integrity.