The Fuller- Transmissions Auxiliary Mainshaft Gear is designed to provide reliable performance over a long service life. It is machined with precision to ensure accurate tooth profiles and smooth operation. The specific tooth profiles ensure efficient power transfer and minimize noise. This gear is designed for a perfect fit and easy installation, making it an ideal choice for your transmission needs. With its durable construction and reliable performance, the mainshaft gear is the perfect choice for your transmission needs. FleetPride is your First Click in Heavy Duty®.